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Posted: 3/13/2015 8:30:02 PM EDT
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Anyone have any first hand experience between the two?
I was working up a load (18" 1:8 Colt AR) with IMR 8202 XBR but couldn't get accurate speed on the heavier bullets. Reloader-15 gave me 100+ fps more and I was wondering if AR-Comp was worth exploring. Any other benefits of AR Comp over RX-15? I've seen some people claim Reloader 15 falls apart in heat but no real first hand experience. |
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Quoted: Anyone have any first hand experience between the two? I was working up a load (18" 1:8 Colt AR) with IMR 8202 XBR but couldn't get accurate speed on the heavier bullets. Reloader-15 gave me 100+ fps more and I was wondering if AR-Comp was worth exploring. Any other benefits of AR Comp over RX-15? I've seen some people claim Reloader 15 falls apart in heat but no real first hand experience. But between all 3 powders, IMR-8208 XBR is the clear winner in my AR. You rifle may like a different powder than mine, so try ARComp so you will know what your rifle likes. |
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I have run both with 70 TSX and 77 noslers through three AR's. A 20" bcm barrel 1-7, 16" Troy 1-7 and 18" R-15 1-9. The TSX won't stabilize in the 1-9 for obvious reasons, although I tried it anyway. The bcm and Troy both are far more accurate with re-15 and TSX with velocities of 3070 for bcm and 2830 for Troy. All three are more accurate with ar comp with 77's. Velocities are for all purposes the same running 77's. Ar comp averages 1.3" @100 yards in all three, re-15 is 1.6" for all three.
My most accurate load with 77's is with TAC, 0.8" for 5 with Troy. Most accurate with 70 TSX is re-15, 0.4" for 5 shots with bcm. |
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25.0 grains of RE-15 is about maximum when loading 69 grain SMK's.
24.0 grains of RE-15 is about maximum when loading 75/77 grain magazine fed bullets. You may or may not be able to use that much powder. Work up to it. Speed is the last thing I'm concerned with. If a more accurate load is 100 fps slower than my full power load I go with the accurate one. |
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Quoted:
with IMR 8202 XBR but couldn't get accurate speed on the heavier bullets. Reloader-15 gave me 100+ fps more... I've seen some people claim Reloader 15 falls apart in heat but no real first hand experience. I also find lower velocity with IMR 8208 XBR, with heavier bullets. I haven't tried the AR comp. My rifle loves RL15 |
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Since you're trying to push heavy bullets.
Any consideration given to using Alliant Power Pro 2000 MR ? I have 77, 75 and 68gr Hornady's along with a few hundred Bonded Nosler in 64gr so I picked up 2lbs of the Power Pro 2000. Alliant reports it as a good powder for heavy bullets that meters well and some good reports exist out there on the WWW but those are mainly for the 308. Our recent weather has kept me indoors shooting pistol so my trial and error will have to wait. ETA: added text to show that I am staying with the OP's remarks about "heavier" bullets. This was not an attempt to de-rail or hijack; only pointing out another powder option. |
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Have both. Everyone likes RE15 so much better. I don't. Getting almost 2800 FPS 80 gr with the ARCOMP, with very good results. Out of 20 shots for record yesterday at reduced for 200 yards, that load got 18 inside the 10 ring, and 2 shots I botched. In the rain. Using random pick up brass.
I like ARComp a lot, and want to start using it in my Garand, but can't find any data. |
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Quoted:
I'm with dryflash, 8208xbr is a clear winner with all of my rifles. I really dont care about velocity near as much as putting 10 rounds in a inch off a bipod. You simply won't know if arcomp is better or not until you rule it out. This is my stance for .223/5.56 usage, but I'm not sure 8208-xbr is slow enough to work with 175gr SMK or 178gr Hornady BTHP out of my 20" 1:10 .308 to reach out to 1K. I did some initial workups, but need to do some more testing, and have been wondering if AR-Comp might be worth a look, as well as being reasonably metering - anyone have any feedback on it for this use? |
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