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Posted: 3/19/2015 10:21:01 AM EDT
I have been reading a lot about bullet grain vs twist rate.
I don't have the rifle yet but I do want to start buying ammo.
Will say a 40 grain or 55 grain bullet be as accurate as a 75 grain bullet coming from a 1-in-7 twist rate chrome line barrel?


Also where are your online ammo sources? -Best priced , best quality?

I did try out Freedom Munitions online. The first order with them has free shipping so it really is a great deal for your first order. I bought 100 round of 9mm and 100 rounds of .40 S&W for around 45.00 total.

Any other places to get say 500 rounds of 5.56 x 54 or .223?

Thanks in advance!!!
Link Posted: 3/19/2015 10:27:21 AM EDT
[Last Edit: 3/19/2015 10:27:34 AM EDT by hotbiggun42]
SGAmmo and 55-77 grain.
Link Posted: 3/19/2015 10:57:30 AM EDT
Link Posted: 3/19/2015 10:58:29 AM EDT
I'll let the experts speak here better than me, but my experience is to test a bunch of different types in each rifle and see what it likes best. In other words, I don't know if I'd stock before knowing what your rifle likes.

Case in point, I have a Noveske build with a 1/7 twist 16" barrel that just LOVES 50g .223 varmint rounds. I didn't see that one coming.
Link Posted: 3/19/2015 11:01:21 AM EDT
Originally Posted By Taylor460:
I have been reading a lot about bullet grain vs twist rate.
I don't have the rifle yet but I do want to start buying ammo.
Will say a 40 grain or 55 grain bullet be as accurate as a 75 grain bullet coming from a 1-in-7 twist rate chrome line barrel?
View Quote


I had this same question when I was building my PSA. Everyone I talked to said they had no problem running 55gr. I cant say anything about 40gr. When I took my PSA in to sight it i saw zero difference in accuracy with 69gr and 55gr. Hope that helps.
Link Posted: 3/19/2015 11:01:51 AM EDT
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They ship fast also.
Link Posted: 3/19/2015 11:20:22 AM EDT
Great information!!! Thanks guys!!
Link Posted: 3/19/2015 11:36:11 AM EDT
I like this site for comparing prices

http://ammoseek.com/
Link Posted: 3/19/2015 12:47:20 PM EDT
Every barrel will handle ammo differently. Like some of the above replies suggest, buy a bunch of different brands/grains and see what your rifle likes to chew up and spit out. I have a Daniel Defense CHF 1/7 twist chrome lined barrel which shoots cheap Wolf Gold 55gr really well and is lights out with SSA 69gr.
Link Posted: 3/19/2015 1:15:04 PM EDT
Generally, heavier bullets are more accurate in faster twist barrels like a 1:7. The lighter bullets may be overstabilized and not be very accurate.

For example, 77gr SMK's require 1:7 or 1:8 twist barrels. 1:8 seems to be the best all around twist if you want to shoot the heavy and light stuff.
Link Posted: 3/19/2015 1:23:03 PM EDT
I've had 52's and 55's show stellar accuracy in 1/7 barrels. At 100 yards. Maybe even better than some of the heavier stuff out of my 1/7's. Some say the heavier bullets, you see the benefits at longer distances with the size of groups. So yeah, at 100 yards, I think the best load going is 52 grain BTHP, Black Hills. But they will not carry as far and buck the wind as good as the heavier bullets for longer distance shooting.

Plus, as someone said earlier, you have to shoot a bunch and see what your barrel likes.

Because if I've said it once, I've said it a thousand times.


EVERY BARREL IS PREJUDICED.
Link Posted: 3/19/2015 1:25:38 PM EDT
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Originally Posted By hotbiggun42:



They ship fast also.
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Originally Posted By hotbiggun42:



They ship fast also.


Hey be nice to the newguy. PSA takes about a month to ship. Slowest company and worst customer service. Its not worth the cheap prices for the cheap parts.
Link Posted: 3/19/2015 2:17:45 PM EDT
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Originally Posted By FIREBALL_BRIAN:


Hey be nice to the newguy. PSA takes about a month to ship. Slowest company and worst customer service. Its not worth the cheap prices for the cheap parts.
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Originally Posted By FIREBALL_BRIAN:
Originally Posted By hotbiggun42:



They ship fast also.


Hey be nice to the newguy. PSA takes about a month to ship. Slowest company and worst customer service. Its not worth the cheap prices for the cheap parts.


I ordered. VZ 2008 last week. They shipped it the next day. I think the slow shipping is AR related gear.
Link Posted: 3/19/2015 2:31:17 PM EDT
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Originally Posted By hotbiggun42:


I ordered. VZ 2008 last week. They shipped it the next day. I think the slow shipping is AR related gear.
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Discussion ForumsJump to Quoted PostQuote History
Originally Posted By hotbiggun42:
Originally Posted By FIREBALL_BRIAN:
Originally Posted By hotbiggun42:



They ship fast also.


Hey be nice to the newguy. PSA takes about a month to ship. Slowest company and worst customer service. Its not worth the cheap prices for the cheap parts.


I ordered. VZ 2008 last week. They shipped it the next day. I think the slow shipping is AR related gear.


I ordered a Bushnell AR Optic March 9th, they promptly shipped it on March 17th. I think your case is more of the exception than the rule.
Link Posted: 4/30/2015 8:21:48 PM EDT
Does anyone know if there are any threads or resources that compare how barrels of the same length (16") with 1:7, 1:8 and 1:9 twist rates perform when shooting 55 gr. vs. 62 gr. (Federal XM193 & Federal XM855) at a fixed distance?
Link Posted: 4/30/2015 8:36:01 PM EDT
I have had excellent results with 52s-77s. I tend to shoot those two weights the most.
Link Posted: 4/30/2015 8:58:51 PM EDT
[Last Edit: 4/30/2015 9:40:18 PM EDT by Vinny302]
I also have had excellent results from a 16" 1-7 barrel with XM193 ammo. This shoot was 30 rounds with a 2 second interval between shots at 200 yards from a bipod. AR was a 16" Green Mountain 1-7 barrel, Nikon 4-12-40mm scope and a Hiperfire competition trigger.

Vince
Link Posted: 4/30/2015 9:24:51 PM EDT
I have had good luck with 62gr+

Out of a "couple" 1:7 twist guns I have had 2-3 that did not like 55gr. Armalite, PSA and a Olympic. The groups were a little bigger than they should have been at 100 and the Armi would keyhole.
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