Hello, I’m looking at getting a PSA kit for a second AR. I currently have a Ruger 556 with a 1:8 twist. Its a great rifle and shoot very accurately, its just a little cumbersome shooting offhand with an optic so thats why I’m looking at a minimalist light weight for another build. I noticed PSA sel…

@samuelwalton11 Sam, Some discussion in this thread reguarding twist rate, it might be worth reviewing. [image] Need some clarification on ammo selection AR-15 Hello All: Of the three different versions of the 5.56 caliber 77 grain ACC ammo OTM Sierra TMK 3, Sierra …

I have 1:7, :8 and :9 barrel twists. All three shoot 55-77 gr just fine. If I am looking for accuracy, I will use 62 or better. Usually 77 gr for longer distances (110+ yrds) which yields the best consistent accuracy for me. Of course, the shooter in my case is the weak link in the chain.

i too have 1:7 through 1:9 barrel twists for my 556/223 build… i prefer 1/8 as it is like the sweet spot in my opinion to be the best all around barrel for all different types of ammo… there is a whole bunch to read about barrel twist versus ammo and all that, so i suggest you do what AZ_Joe said a…

I have a 16 inch palmetto with 1:7 twist. It shoots 55g fmj around 7inch moa. With factory ammo over 60g including 77g tmj it gets around 3 moa. Today i finally got a sub moa group out of it. With handloaded 24g 8208 xbr and 62g fmj boat tail by hornady. By sub moa I mean just over half inch. I was …

Welcome to the forums @Sirgirdley :cowboy_hat_face: Every rifle has the potential to be just a little different than the next. You are on the right track to find out exactly what she likes to eat.

I revived wisdom from an uncle who was a serious hunter/shooter and all around “Gun Guy” when he was teaching me to shoot and develop my love of shooting, “Every weapon barrel has a different taste for ammo” What barrel length is sitting on your rifle? All of my 16" BBL 1:7 PSAs shoot better with…

You sir have it figured out. Every rifle likes what it likes regardless… @eurolynn

The twist rate calculators are helpful to put some outer bounds on what you can use, but every barrel most definitely has a different taste for ammo. All my 5.56 barrels seem to be about the same as yours, so I use that to buy a smaller selection of ammo. I stopped buying 55gr because one gun hates …

I’ll have to try some 75 grain loads in my PSA 223 wylde. I actually got some decent results with some 55 grain PMC ammo. Nothing spectacular though.

Twist rates? 1:7 vs 1:8 does it matter?

General Discussion

AZ_Joe May 2, 2023, 4:36am 2

@samuelwalton11
Sam,
Some discussion in this thread reguarding twist rate, it might be worth reviewing.

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Twist rates? 1:7 vs 1:8 does it matter?

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