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Link Posted: 7/7/2021 1:42:21 PM EDT
[#1]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By garbageman:

I loaded some LC brass with 400's, 25.0 of varget, 69smk, 2.255" and shot a match on Sunday.  The cases were only once fired and I found a case that was cracked most of the way thru about in the middle.

When I got home I checked all of them and ended up trashing about a dozen that were starting to show a crack forming.  I'm amazed that your cases are holding up w/ 25.6

ETA: 20" Kreiger barrel w/ a CLE chamber, AR platform.
View Quote
Annular crack? How much shoulder clearance do you size for?
Link Posted: 7/8/2021 7:35:37 AM EDT
[#2]
@dryflash3 or @AeroE - would it be possible to toggle this thread on the RMR 69gr bullets to not go into archives?

We have a few threads going on these bullets, but this one seems to be the critical mass for collecting data from multiple posters.
Link Posted: 7/8/2021 7:59:57 AM EDT
[Last Edit: AeroE] [#3]
Link Posted: 7/8/2021 1:59:23 PM EDT
[#4]
Link Posted: 7/8/2021 7:45:12 PM EDT
[#5]
Ok, I tested some A2520 with these and I’ll get the results posted soon.

Does anyone have any powders they would like me to test with these rmr bullets?
I have few powders to choose from.

My primers are pretty limited but I’ll do what I can.
Link Posted: 7/8/2021 9:11:51 PM EDT
[#6]
Varget at 24.6-24.9gr. If they shoot, they’ll likely shoot with that charge range.
Link Posted: 7/9/2021 6:19:56 AM EDT
[#7]
I’ve done Varget in this thread already
Link Posted: 7/11/2021 3:43:57 PM EDT
[#8]
RMR 69gr BTHP A2520 Load data

24.8gr- 2742-FPS     27.5 SD

25.1gr- 2810-FPS.     15.0 SD

25.4gr- 2836-FPS     30.9 SD

25.7gr- 2898-FPS      29.1 SD

26.0gr- 2921-FPS      34.0 SD

Load data was pulled from western powders 5.56 data.
The 26.0 load had pressure signs.
Western powder says 25.8 is max 5.56 load for 2520.

Attachment Attached File


Attachment Attached File


Attachment Attached File


Attachment Attached File


Attachment Attached File


The last last had some very light ejector smears.
Link Posted: 7/11/2021 4:48:24 PM EDT
[Last Edit: SuperJlarge] [#9]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Shiftyk5:
I’ve done Varget in this thread already
View Quote

Yeah, but I only saw the higher charge weights. I think you’ll have better luck below 25gr.
Link Posted: 7/11/2021 4:55:44 PM EDT
[Last Edit: Shiftyk5] [#10]
Standard deviations were much to large for my liking and the groups I was getting wasn’t much different.
Which could be my poor shooting

Edit to add pic

Attachment Attached File
Link Posted: 7/11/2021 9:08:05 PM EDT
[#11]
I tested these the other day with W748, once fired LC brass and CCI41 primers. Started at 25.4 gr and went up to 25.8 gr with no pressure signs. Best accuracy at 25.6-25.8 with SD's below 10 on both. 25.6gr @ 2879. 25.8gr @ 2922 with 20" barrel. 10 round groups.
Link Posted: 7/11/2021 10:21:27 PM EDT
[#12]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Shiftyk5:
Ok, I tested some A2520 with these and I’ll get the results posted soon.

Does anyone have any powders they would like me to test with these rmr bullets?
I have few powders to choose from.
View Quote



If you have any BL-C(2) I’d love to see some results and to have something to compare to whenever I get a chance to test mine. Trying to clear up some health issues so I can hit the range.
Link Posted: 7/12/2021 1:29:15 PM EDT
[Last Edit: Shiftyk5] [#13]
Gave away the BLC2 I had. Never had any luck with that powder. Sorry
Link Posted: 7/14/2021 12:16:27 AM EDT
[Last Edit: AeroEngineer] [#14]
I’ve previously shot test loads using CFE223 and RE15.  Today I loaded 15 with each powder at the charge weight that showed the best accuracy in each powder.

Attachment Attached File


Attachment Attached File


I fired these 15 round groups with a round robin manner.

Pretty clear that RE15 performs better than CFE223 with the 69 gr RMR bullet in this particular barrel.
Link Posted: 7/14/2021 7:20:46 AM EDT
[Last Edit: Shiftyk5] [#15]
Agreed, lots of people have success with it. But I’ve never found accuracy for cfe223

Great looking 15 shot group with RE-15
Link Posted: 7/22/2021 8:03:16 AM EDT
[#16]
I managed to grab 8# of TAC from our Brownell’s overlords.  

I will be trying TAC under some 69 gr RMR bullets next.

I’m happy with the Re15 accuracy, but I have to throw each charge, weigh it and usually trickle up a small extra amount of powder to stay at the consistency of charge I want.  

I’m hoping TAC gives similar accuracy but will let me simply throw charges with my Uniflow.
Link Posted: 7/22/2021 10:45:31 AM EDT
[#17]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Shiftyk5:
Ok, I tested some A2520 with these and I’ll get the results posted soon.

Does anyone have any powders they would like me to test with these rmr bullets?
I have few powders to choose from.

My primers are pretty limited but I’ll do what I can.
View Quote


@Shiftyk5  Do you have any TAC?  I'm planning to try some out, but would be interested to see other results.

And a question on the A2520 - how did it meter?
Link Posted: 7/22/2021 1:50:12 PM EDT
[#18]
A2520 is a ball powder rumor is that Shooters world match rifle is the same or use to be A2520.

My match rifle meters like water.
Link Posted: 7/22/2021 11:33:34 PM EDT
[Last Edit: Sebspeed] [#19]
First nice day in over 3wks here, tried out my new-to-me Intellidropper this am to load:

ZQI/MKE once fired 556 brass trimmed to 1.750, swaged primer pocket, no flash hole work
Primed with F205GM
Varget 24.5, 24.7, 25.0, 25.3
RMR 3GH seated to 2.260" -.004", +0.0"

Fed from a Lancer mag into a 18" Shilen srp barrel, fired through CE chrony, 75f ~50% humidity. I shot a few sighters from the 24.5 loadings on a lower target, so the subsequent groups are deviations from that zero. My hold was center red for all groups.

Results (5 shot groups)
24.5gr - 0.59moa - 2862(avgfps) - SD 20
24.7gr - 0.72moa - 2843 - SD 23
25.0gr - 0.75moa - 2884 - SD 28
25.3gr - 1.05moa - 2910 - SD 22

Going to try to add some pics here...

https://imgur.com/a/5Qg7h1Y

https://ibb.co/VqRwhMq

^^ I shoot my test loads clockwise from top left, center target hits were just screwing around.

https://ibb.co/dWRPXcD

https://ibb.co/C0pcKjs

https://ibb.co/9np6VkH

https://ibb.co/zRN726s

Sorry, I'm trying to add more pics but imgur is not working well today. I have screenshots from the chrony app as well. I want to play with more test loads in the 24.5-25 range, but Im thinking of trying Shifty's 2.230" seating depth with the 24.5 first.

@SuperJlarge
Link Posted: 7/23/2021 4:23:51 AM EDT
[#20]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By AeroEngineer:


@Shiftyk5  Do you have any TAC?  I'm planning to try some out, but would be interested to see other results.

And a question on the A2520 - how did it meter?
View Quote


I think I have about 1/2 pound left of tac, I’ll load a few charges. What’s your charge range you are planning?

Tac measures very well. It’s a good ball powder I have used for 77gr smk’s in the past.
Link Posted: 7/23/2021 5:18:22 PM EDT
[#21]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Shiftyk5:


I think I have about 1/2 pound left of tac, I’ll load a few charges. What’s your charge range you are planning?

Tac measures very well. It’s a good ball powder I have used for 77gr smk’s in the past.
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Shiftyk5:
Originally Posted By AeroEngineer:


@Shiftyk5  Do you have any TAC?  I'm planning to try some out, but would be interested to see other results.

And a question on the A2520 - how did it meter?


I think I have about 1/2 pound left of tac, I’ll load a few charges. What’s your charge range you are planning?

Tac measures very well. It’s a good ball powder I have used for 77gr smk’s in the past.


From my initial research, around 24 gr is max .223 pressure and around 25 gr max is 5.56 pressure.  I’m going to find an accuracy load near max .223 or into mid range 5.56.
Link Posted: 7/23/2021 11:30:50 PM EDT
[#22]
I've never seen a bottle of Tac in person, but I have some 4166 and ARComp I'll try.
Link Posted: 7/24/2021 8:03:11 AM EDT
[#23]
Although I have not had the chance to shoot the RMR's yet, I've had super results with 23.7 TAC in 3 rifles with both Sierra and Nosler 69's.  Not the fastest by any means but it pokes tiny groups in everything I shoot.  I expect equal results with the RMR's.
Link Posted: 7/29/2021 4:08:23 PM EDT
[#24]
Updating these groups with velocity data:

69 gr RMR HPBT - CFE223 @ 25.6 gr - "FC" brass - CCI 400 - 2.26" COL - 16" BA Hansen with Wylde chamber - MV 2718 fps
Attachment Attached File



69 gr RMR HPBT - Reloader 15 @ 24.0 gr - "FC" brass - CCI 400 - 2.26" COL - 16" BA Hansen with Wylde chamber - MV 2530 fps

Attachment Attached File




Link Posted: 7/29/2021 7:38:15 PM EDT
[#25]
That RE-15 is looking good
Link Posted: 7/29/2021 10:20:21 PM EDT
[#26]
Loaded up two more ladders to continue testing the 69rmr.

24 and 24.4Grn of 8208xbr

Testing coal from 2.260-2.200 in 0.020 jumps on both.

Attachment Attached File


Hope to shoot this weekend.
Link Posted: 7/29/2021 10:32:27 PM EDT
[#27]
Big thanks to you guys for posting your load and results!!

Link Posted: 7/30/2021 6:04:53 AM EDT
[Last Edit: chevrofreak] [#28]
Oddly my best results with this bullet, as well as the wholely dissimilar 75gr Speer TMJ, and the 77gr SMK are all at the same powder charge; 21.4gr of AR Comp.   I had started at 22.5gr of AR Comp based on previous luck with Alliant load data, but my super short throated Bergara AR barrel was blowing primers at this charge weight (none of my other guns have problems with this ammo).   I really cannot explain the 21.4gr thing for 3 bullets that are so different.

Velocity was pretty pitiful at around 2850fps from a 24" barrel.

I should mention that these 5,000 bullets I have are from their original batch several years ago before their press broke.
Link Posted: 7/31/2021 11:52:16 PM EDT
[#29]
Shot my ladders.

The second one went kinda meh as it was a very frustrating range day from issues unrelated to the bullet and I think I started rushing and pulled several shots that should have made good groups.

Which is okay because 3/4 of the first ladders groups were under moa with the best at roughly 0.6 moa. Will measure and post better pictures tomorrow but hopefully this is a repeatable group. I was only aiming for 1moa for bulk longer range plinking ammo.

Doing a 5x5rd group test tomorrow to verify comprehensive accuracy.

This is with the calipers zeroed on a .224 projectile so its the center to center measurement.
Attachment Attached File
Link Posted: 8/5/2021 2:18:51 PM EDT
[#30]
I'm going to give IMR4166, ARComp, and Reloder 15 another try with these now that I have the Intellidropper.

Any votes on which to try first?
Link Posted: 8/6/2021 8:58:51 PM EDT
[#31]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Sebspeed:
I'm going to give IMR4166, ARComp, and Reloder 15 another try with these now that I have the Intellidropper.

Any votes on which to try first?
View Quote


I’d try Re15.  I was happy with accuracy, velocity was okay but I had to throw charges then trickle up for every load.  If I had a reliable way to drop consistent charges without trickling, I’d be happy with Re15.
Link Posted: 8/6/2021 10:44:32 PM EDT
[#32]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By AeroEngineer:


I’d try Re15.  I was happy with accuracy, velocity was okay but I had to throw charges then trickle up for every load.  If I had a reliable way to drop consistent charges without trickling, I’d be happy with Re15.
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By AeroEngineer:
Originally Posted By Sebspeed:
I'm going to give IMR4166, ARComp, and Reloder 15 another try with these now that I have the Intellidropper.

Any votes on which to try first?


I’d try Re15.  I was happy with accuracy, velocity was okay but I had to throw charges then trickle up for every load.  If I had a reliable way to drop consistent charges without trickling, I’d be happy with Re15.


The last time I tried it, I only used my Uniflow to throw the charges and my results were not great. I'm confident the Intellidropper will lower my SD and group sizes, but it remains to be seen if that will shrink groups to "Varget-size".
Link Posted: 8/7/2021 12:26:12 AM EDT
[#33]
Link Posted: 8/7/2021 1:19:41 AM EDT
[#34]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By dryflash3:
I'm able to throw Re-15 + or - .1 gr with my Redding.

Dillon PM has no trouble with it either.

It's all about proper technique.
View Quote View All Quotes
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Discussion ForumsJump to Quoted PostQuote History
Originally Posted By dryflash3:
Originally Posted By Sebspeed:
Originally Posted By AeroEngineer:
Originally Posted By Sebspeed:
I'm going to give IMR4166, ARComp, and Reloder 15 another try with these now that I have the Intellidropper.

Any votes on which to try first?


I'd try Re15.  I was happy with accuracy, velocity was okay but I had to throw charges then trickle up for every load.  If I had a reliable way to drop consistent charges without trickling, I'd be happy with Re15.


The last time I tried it, I only used my Uniflow to throw the charges and my results were not great. I'm confident the Intellidropper will lower my SD and group sizes, but it remains to be seen if that will shrink groups to "Varget-size".
I'm able to throw Re-15 + or - .1 gr with my Redding.

Dillon PM has no trouble with it either.

It's all about proper technique.


Good for you. Allow me to rephrase. I'm confident the Intellidropper will drop consistent charges. I'm not confident the Uniflow was, as I didn't weigh each charge. I only weighed charges while setting up each step in the ladder. Also, I didn't say the Re15 shot like crap, just that I didn't get the results I was looking for.

So anyway... 1 vote for Re15...
Link Posted: 8/7/2021 7:59:04 AM EDT
[#35]
Link Posted: 8/7/2021 1:18:36 PM EDT
[#36]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By dryflash3:
I just don't want people to think you can't drop Re-15 from a PM.
View Quote


Then quote AeroE instead of me... I never said I had an issue with the measure. I said I didn't have good results with the powder.

If you'd like to question me on my ability to use a measure, can you shoot me an IM so we don't clog up this thread?
Link Posted: 8/7/2021 11:09:04 PM EDT
[#37]
Link Posted: 8/14/2021 8:55:21 PM EDT
[Last Edit: AeroEngineer] [#38]
I shot some 69 gr RMR bullets over TAC this morning. All of these loads are using LC brass, CCI#41 primers and seared at 2.26”

Attachment Attached File


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Attachment Attached File


A couple of called flyers in the results, due to range conditions.  The rifle line was full and I had shooters on both sides using brakes.

I’ll load 20 at 24.6 gr and shoot a more statistically significant group.
Link Posted: 8/17/2021 11:47:27 AM EDT
[#39]
Something I thought I'd toss out as a note, since I've run into it a few times now - the range at my club is in a small valley and has an odd swirling breeze on a good day and a stiff one more often than not. We use H style 2x4 target bases and furring strip+cardboard backers. I had to start bringing weights along for my precision trips because the target moves back and forth up to 6" in the base due to the breeze. Took me a few trips to catch on, and it can really throw a good group off.
Link Posted: 8/17/2021 12:14:44 PM EDT
[Last Edit: AeroEngineer] [#40]
I'm loading more at 24.5 gr, 24.7 and 24.9 gr of TAC.  I'll shoot all of these to see if I can fine tune a TAC load.  However, loading about 30 in total finished off my first batch of 500.  

I placed an order for 1,000 more of these 69 gr bullets.
Link Posted: 8/17/2021 1:42:03 PM EDT
[#41]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By AeroEngineer:
I'm loading more at 24.5 gr, 24.7 and 24.9 gr of TAC.  I'll shoot all of these to see if I can fine tune a TAC load.  However, loading about 30 in total finished off my first batch of 500.  

I placed an order for 1,000 more of these 69 gr bullets.
View Quote


I've got 3k 3GH's and 10k primers... and very little Varget...
Link Posted: 8/18/2021 11:20:08 PM EDT
[#42]
I have been keeping up with this thread.
I found IMR 4166 shot well  enough I’m loading  
24.0 grains oal 2.250 shot out of a kregier 26 inch
With a 30x on it, no idea what the velocity is, no
Pressure signs  Winchester cases and primers
Link Posted: 8/19/2021 2:02:02 AM EDT
[#43]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By jvm:
I have been keeping up with this thread.
I found IMR 4166 shot well  enough I’m loading  
24.0 grains oal 2.250 shot out of a kregier 26 inch
With a 30x on it, no idea what the velocity is, no
Pressure signs  Winchester cases and primers
View Quote



This is promising.  I recently traded someone 8lbs of WC-844 for 5lbs of IMR 4166 because it kept bringing his powder measure.  I have never used it before.
Link Posted: 8/20/2021 10:15:42 PM EDT
[#44]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By chevrofreak:



This is promising.  I recently traded someone 8lbs of WC-844 for 5lbs of IMR 4166 because it kept bringing his powder measure.  I have never used it before.
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By chevrofreak:
Originally Posted By jvm:
I have been keeping up with this thread.
I found IMR 4166 shot well  enough I’m loading  
24.0 grains oal 2.250 shot out of a kregier 26 inch
With a 30x on it, no idea what the velocity is, no
Pressure signs  Winchester cases and primers



This is promising.  I recently traded someone 8lbs of WC-844 for 5lbs of IMR 4166 because it kept bringing his powder measure.  I have never used it before.


I had favorable results with it a while back, with less detailed loading methods. Looking forward to trying it again but need the time to do so.
Link Posted: 8/20/2021 11:01:59 PM EDT
[#45]
I’m too dumb to post pics 7 shots went into one bug hole. I pulled the other 3.
Kicker is it was at 50 yards. I’m shooting left handed as my right eye has macular,
The trigger is also-heavier than I like. I figure part of the group is shooter error.
Only problem  I see with 4166 is charges need to be individually weighed.
Link Posted: 8/21/2021 4:15:19 AM EDT
[#46]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By jvm:
I’m too dumb to post pics 7 shots went into one bug hole. I pulled the other 3.
Kicker is it was at 50 yards. I’m shooting left handed as my right eye has macular,
The trigger is also-heavier than I like. I figure part of the group is shooter error.
Only problem  I see with 4166 is charges need to be individually weighed.
View Quote


I have an Autotrickler V3, so, if accuracy is where I need it, it really isn't too much time to load some up.
Link Posted: 8/21/2021 11:27:24 PM EDT
[#47]
I don’t know if the accuracy nodes would different with a 26 inch barrel verses shorter ones?
I made this as a bench gun, it appears to be quite accurate.
Link Posted: 8/22/2021 2:14:45 AM EDT
[#48]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By jvm:
I don’t know if the accuracy nodes would different with a 26 inch barrel verses shorter ones?
I made this as a bench gun, it appears to be quite accurate.
View Quote


I have a 24" barrel that has a stupidly short throat that is causing me lots of consternation, but the one upside to it is that I am getting the same velocities and accuracy of many of the guys running 18" MK12 type guns.   For example, in an 18" barrel MK262 tends to run 2760fps with a very stout load, but it provides incredible accuracy.   I can handload the same bullet with a much lighter powder charge and achieve identical accuracy at the same velocity.

Blessing or curse; has yet to be decided.
Link Posted: 9/12/2021 8:37:02 PM EDT
[Last Edit: Sebspeed] [#49]
I visited with some friends this weekend and we had an outing at their range. Real nice setup with target backers and steel at 50/100/200 & 300 yards. I loaded up 80 of the same Varget loads I tested last time around, which I had noted grouped a bit better at the shorter 2.230" OAL.

Hitting all the steel was no problem and quite fun, and I finally had a chance to shoot some of these loads on paper at 300. I almost forgot to do it and so I rushed a bit and only shot 2 groups. I did not attempt to hold over or adjust for the distance, I simply held on the top left and right bulls.

I always shoot clockwise starting top left, interesting the slight difference group position. Also only loaded 9 rounds instead of 10, hence the 5 + 4 groups... I did say I was rushing...







Link Posted: 9/12/2021 9:49:40 PM EDT
[#50]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Sebspeed:
I visited with some friends this weekend and we had an outing at their range. Real nice setup with target backers and steel at 50/100/200 & 300 yards. I loaded up 80 of the same Varget loads I tested last time around, which I had noted grouped a bit better at the shorter 2.230" OAL.

Hitting all the steel was no problem and quite fun, and I finally had a chance to shoot some of these loads on paper at 300. I almost forgot to do it and so I rushed a bit and only shot 2 groups. I did not attempt to hold over or adjust for the distance, I simply held on the top left and right bulls.

I always shoot clockwise starting top left, interesting the slight difference group position. Also only loaded 9 rounds instead of 10, hence the 5 + 4 groups... I did say I was rushing...

https://i.imgur.com/qoiyIEB.jpg

https://i.imgur.com/sxjcqij.jpg

https://i.imgur.com/vOMj6Xz.jpg

https://i.imgur.com/kCcUxO0.jpg
View Quote


If buy that for a dollar!

I am still trying to get to the range... have a work up with shooters world match ready to go.
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