User Panel
User Panel
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USA
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Posted: 11/7/2023 8:14:02 PM EDT
[#1]
For a rifle length barrel in 5.7, which I am doing on my tc encore - mgm recommends a 1-7 or 1-9 twist. They gave others all the way to 1-16. What do you guys recommend?
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Posted: 11/7/2023 8:37:01 PM EDT
[#2]
Quote HistoryOriginally Posted By DOG556: For a rifle length barrel in 5.7, which I am doing on my tc encore - mgm recommends a 1-7 or 1-9 twist. They gave others all the way to 1-16. What do you guys recommend? That sounds like a needlessly fast twist for a 40 grn bullet, unless I'm missing something? Lowered velocity dropping rpm? |
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USA
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Posted: 11/7/2023 8:49:41 PM EDT
[#3]
https://matchgrademachine.com/product/build-a-custom-barrel/
Just go to build a barrel. Choose your chamber and caliber. When you get to 5.7x28 look at the twists |
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USA
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Posted: 11/8/2023 8:53:29 AM EDT
[#4]
Found some old info on the FN forum. They say 1-9… https://www.fnforum.net/threads/fiveseven-twist-rates.8403/. I also google best twist rate 5.7x29… and
What is the best twist rate for a 5.7 x28mm? The common rifling twist rate for this cartridge is 1:228.6 mm (1:9 in), 8 grooves, Ø lands = 5.53 mm, Ø grooves = 5.62 mm, land width = 1.63 mm and the recommended primer type is small rifle. |
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USA
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Posted: 11/8/2023 8:54:58 AM EDT
[#5]
Found some old info on the FN forum. They say 1-9… https://www.fnforum.net/threads/fiveseven-twist-rates.8403/. I also google best twist rate 5.7x29… and
What is the best twist rate for a 5.7 x28mm? The common rifling twist rate for this cartridge is 1:228.6 mm (1:9 in), 8 grooves, Ø lands = 5.53 mm, Ø grooves = 5.62 mm, land width = 1.63 mm and the recommended primer type is small rifle. |
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Posted: 11/8/2023 1:04:30 PM EDT
[#6]
Someone needs to do the math on the RPM at 16" MV. My high school physics was more than 30 years ago.
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USA
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Posted: 11/8/2023 1:24:15 PM EDT
[#7]
Public School kid here.
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USA
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Posted: 11/9/2023 8:05:14 AM EDT
[#8]
Well CMMG uses a 1-9 twist on their 16 inch AR15. https://cmmg.com/resolute-mk4-5-7x28mm-16-1
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Posted: 11/10/2023 4:56:52 PM EDT
[#9]
1:9 will suite you well from 28-62gr. If you want to shoot heavier than a 1:7 but the usefulness of HFC .224 pills will end up being subsonic in the 5.7..
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Posted: 11/10/2023 5:23:24 PM EDT
[#10]
 Attached File Attached FileI shot a big hog also. It worked great but forgot to take a pic. It was 2 in the morning |
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Posted: 11/10/2023 6:23:21 PM EDT
[#11]
Quote HistoryOriginally Posted By TuskenRaider: https://www.ar15.com/media/mediaFiles/227384/IMG_3095_jpeg-3022718.JPGhttps://www.ar15.com/media/mediaFiles/227384/IMG_3067_jpeg-3022719.JPG I shot a big hog also. It worked great but forgot to take a pic. It was 2 in the morning Awesome!!! What rounds were you using? |
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Posted: 11/11/2023 4:53:23 PM EDT
[#12]
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USA
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Posted: 11/11/2023 5:32:41 PM EDT
[#13]
What’s the twist?
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Posted: 11/20/2023 4:35:31 PM EDT
[#14]
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Posted: 12/5/2023 12:51:50 PM EDT
[#15]
Any suggestions on holsters for the M&P 5.7 with a RDS on it?
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Posted: 12/5/2023 1:24:35 PM EDT
[Last Edit: DWFAN]
[#16]
I have a Muddy River Tactical and so far so good.
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USA
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Posted: 12/5/2023 2:22:16 PM EDT
[#17]
Looking at the M&P 5.7 and various twist rates- S&W uses a 1-9. My encore barrel will be that then.
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MI, USA
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Posted: 12/13/2023 7:29:57 PM EDT
[#18]
Quote HistoryOriginally Posted By DOG556: Looking at the M&P 5.7 and various twist rates- S&W uses a 1-9. My encore barrel will be that then. |
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Posted: 12/13/2023 7:45:06 PM EDT
[#19]
Heard FN's introducing a new FBI test compliant round, presumably to compete w/ Gold Dot.
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Posted: 12/13/2023 8:24:52 PM EDT
[#20]
Quote HistoryOriginally Posted By backbencher: Heard FN's introducing a new FBI test compliant round, presumably to compete w/ Gold Dot. |
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USA
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Posted: 12/13/2023 8:29:07 PM EDT
[#21]
Good to know
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Posted: 12/13/2023 9:57:56 PM EDT
[#22]
Quote HistoryOriginally Posted By Buffman_LT1: They released SS200, which is a 30gr Varmint Grenade. It's hot trash. barely 1800 fps, multiple failures to cycle in all 5.7 guns.. Quote HistoryOriginally Posted By Buffman_LT1: Originally Posted By backbencher: Heard FN's introducing a new FBI test compliant round, presumably to compete w/ Gold Dot. They released SS200, which is a 30gr Varmint Grenade. It's hot trash. barely 1800 fps, multiple failures to cycle in all 5.7 guns.. Non-lead? How can they have problems cycling? That weak? Claiming 1894 from their pistol. https://fnamerica.com/products/5-7x28mm/fn-ss200-5-7x28mm/ |
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Posted: 12/14/2023 1:33:37 AM EDT
[#23]
Quote HistoryOriginally Posted By backbencher: Non-lead? How can they have problems cycling? That weak? Claiming 1894 from their pistol. https://fnamerica.com/products/5-7x28mm/fn-ss200-5-7x28mm/ |
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Posted: 12/14/2023 10:22:21 AM EDT
[#24]
Know where their "independent" gel tests are posted?
At this point, I don't expect 5.7 to do rifle type things at 2300 fps, it's a faster smaller .30 Super Carry in bigger guns. Just do well in gel - a lot better than .22 WMR. |
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Posted: 12/14/2023 5:25:29 PM EDT
[Last Edit: luv_the_huskers]
[#25]
Quote HistoryOriginally Posted By backbencher: Know where their "independent" gel tests are posted? At this point, I don't expect 5.7 to do rifle type things at 2300 fps, it's a faster smaller .30 Super Carry in bigger guns. Just do well in gel - a lot better than .22 WMR. I like my 30SC and my 5.7x28. Does this mean I am some kind of freak? FWIW my Panzer Arms AR57 upper is 1:8.5 twist, right hand 6 groove. |
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Posted: 12/14/2023 9:29:18 PM EDT
[#26]
Quote HistoryOriginally Posted By luv_the_huskers: I like my 30SC and my 5.7x28. Does this mean I am some kind of freak? FWIW my Panzer Arms AR57 upper is 1:8.5 twist, right hand 6 groove. Quote HistoryOriginally Posted By luv_the_huskers: Originally Posted By backbencher: Know where their "independent" gel tests are posted? At this point, I don't expect 5.7 to do rifle type things at 2300 fps, it's a faster smaller .30 Super Carry in bigger guns. Just do well in gel - a lot better than .22 WMR. I like my 30SC and my 5.7x28. Does this mean I am some kind of freak? FWIW my Panzer Arms AR57 upper is 1:8.5 twist, right hand 6 groove. I had heard those were back, I'll have to get me one for the Lyndon Mk 2. No lower needed. |
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Posted: 12/14/2023 9:33:02 PM EDT
[#27]
Finally got around to shooting mine.
I had ingested wayyyyy too much caffeine that morning so I wasn't as steady as I'd like. Accuracy was more than acceptable with Gold Dots. I was dinging clay birds at 110 yards and shot a pretty good group at 25. Had one stoppage, failure to eject. I didn't clean it before shooting and there was heavy grease on everything from the factory. That could have been the cause. Oh... All shooting was with a 9mm can with no booster. It is a sweet combination. |
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NC, USA
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Posted: 12/21/2023 12:58:38 PM EDT
[#28]
Which can did you use?
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Posted: 12/21/2023 3:22:14 PM EDT
[#29]
Quote HistoryOriginally Posted By JK-919: Which can did you use? YHM R9 |
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NC, USA
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Posted: 12/22/2023 2:49:51 PM EDT
[Last Edit: JK-919]
[#30]
Quote HistoryOriginally Posted By lokifox: YHM R9 Was it especially gassy? How’d it sound? Can didn’t affect accuracy? |
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Posted: 12/22/2023 10:09:32 PM EDT
[#31]
Quote HistoryOriginally Posted By JK-919: Was it especially gassy? How’d it sound? Can didn’t affect accuracy? Quote HistoryOriginally Posted By JK-919: Originally Posted By lokifox: YHM R9 Was it especially gassy? How’d it sound? Can didn’t affect accuracy? Didn’t notice any gas. Quiet. It’s a good performing can and the locked barrel helps I’m sure. No idea actually. Need to do more testing. It’s not the can that will live on it forever. It’s a bit heavy being more of a subgun/PCC can. I didn’t know that you shouldn’t use 22 cans on the S&W before I bought it. It was an impulse buy… |
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WY, USA
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Posted: 1/14/2024 4:55:29 PM EDT
[#32]
Are there any sources for spare or aftermarket parts for these yet, and does anybody know what parts are compatible with other M&P models?
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USA
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Posted: 1/17/2024 5:56:10 PM EDT
[#33]
Another 5.7 thread. https://www.ar15.com/forums/general/What-5-7x28mm-is-actually-good-for/5-2696127/
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Posted: 1/17/2024 7:17:25 PM EDT
[#34]
Quote HistoryOriginally Posted By DOG556: Another 5.7 thread. https://www.ar15.com/forums/general/What-5-7x28mm-is-actually-good-for/5-2696127/ https://www.ar15.com/forums/general/What-5-7x28mm-is-actually-good-for/5-2696127/ Bumping my own thread, but on Page 2 Buffman was summoned & turned up. |
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USA
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Posted: 2/17/2024 11:06:04 PM EDT
[#35]
Anyone have a holster maker for the 5.7? Or 22mag yet!??
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Posted: 2/18/2024 5:50:11 AM EDT
[#36]
Quote HistoryOriginally Posted By DOG556: Anyone have a holster maker for the 5.7? Or 22mag yet!?? Muddy River Tactical made mine. |
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USA
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Posted: 3/25/2024 8:56:11 AM EDT
[#37]
Any updated reviews or long term reports on the S&W 5.7????
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USA
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Posted: 3/25/2024 7:48:43 PM EDT
[#38]
Since this thread is full of 5.7 junkies on another note does anyone have a CMMG? If so the banshee or disent and what barrel length? Any issues likes or dislikes?
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Posted: 3/26/2024 4:34:38 PM EDT
[Last Edit: PursuitSS]
[#39]
Originally Posted By DOG556: Any updated reviews or long term reports on the S&W 5.7???? Go to the S&W 5.7 Facebook page (Beware there are two unrelated pages) |
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USA
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Posted: 3/26/2024 4:36:23 PM EDT
[Last Edit: DOG556]
[#40]
I don’t have Facebook. What am I looking for??
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Posted: 3/26/2024 5:17:46 PM EDT
[#41]
Quote HistoryOriginally Posted By DOG556: I don’t have Facebook. What am I looking for?? Once I worked over my magazines, I’ve fired OVER 2,000 rounds with no issues. One thing that does concern me is there have been a FEW reports of firing pins breaking. |
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USA
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Posted: 3/27/2024 8:14:22 AM EDT
[#42]
We need a dedicated 5.7x28 forum here on Arfcom
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Posted: 3/28/2024 3:11:34 PM EDT
[#43]
Quote HistoryOriginally Posted By PursuitSS: Once I worked over my magazines, I’ve fired OVER 2,000 rounds with no issues. One thing that does concern me is there have been a FEW reports of firing pins breaking. What did you do to fix your magazines? I contacted S&W after the original mags wouldn't feed and they sent me two new mags, but neither will get thru a full load without either hanging up or the bullet not fully seating in the chamber. I'm really starting to dislike this pistol. |
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USA
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Posted: 3/29/2024 9:04:49 PM EDT
[#44]
I hope smith makes a foldable carbine for the 5.7 using the M&P mags!….
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Posted: 3/29/2024 9:21:53 PM EDT
[#45]
Quote HistoryOriginally Posted By DOG556: I hope smith makes a foldable carbine for the 5.7 using the M&P mags!…. That with suitable ammo might induce me to abandon my Fold AR experiment. |
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Posted: 3/30/2024 11:02:42 AM EDT
[#46]
Quote HistoryOriginally Posted By okboom: What did you do to fix your magazines? I contacted S&W after the original mags wouldn't feed and they sent me two new mags, but neither will get thru a full load without either hanging up or the bullet not fully seating in the chamber. I'm really starting to dislike this pistol. First of all Disassemble your magazines Sand the followers with 1,600 - 2,500 grit sandpaper and focus on the edges Clean your magazine tubes and Thoroughly spray the inside with Remington DriLube (do NOT use oil) Finally NEVER use Federal American Eagle ammunition This SHOULD correct all magazine issues, it did on my six magazines |
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Posted: 3/30/2024 4:04:17 PM EDT
[#47]
Quote HistoryOriginally Posted By PursuitSS: First of all Disassemble your magazines Sand the followers with 1,600 - 2,500 grit sandpaper and focus on the edges Clean your magazine tubes and Thoroughly spray the inside with Remington DriLube (do NOT use oil) Finally NEVER use Federal American Eagle ammunition This SHOULD correct all magazine issues, it did on my six magazines I will try this and take it out after the snow quits and melts. I have Fiocchi and AAC ammo. Hopefully they will work. Thank you for the response. |
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USA
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Posted: 5/6/2024 3:18:30 PM EDT
[#48]
Anyone know of any 5.7x28mm day sales for tomorrow 5/7/2024?????
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