Determining Barrel Twist Rate

[SwaggerUSMCSniper]

My R700 SPS Varmint is a 1:12 twist. I could still technically shoot 75 grain bullets out of it, it just wouldn't group accurately?

[opisex]

Never bothered to do this but good info, nice video.

I was waiting on you to say "CUT!" when the rod slipped.. btw you kinda cut your self off at the end.

[noahboa13000]

looks like u have a red fild wide fild lo pro scope grate choice

[noahboa13000]

looks like u have a red fild wide fild lo pro scope

[1967spud]

another result mr ammo

[romorris]

So a tighter twist means that I need to keep the projectile lighter? Is that how that works? Or is there a range where it would work best? I guess it not that simple. I mean I guess it also has allot to do with how much poser is behind it. I have a 1-9 twist on a .223, I heard I should keep the bullet in the 60ish grain area..for best performance. Thanks for the video! and all your videos! ;)

[ammosmith]

No, a tight twist for a heavier bullet. The 1/7 will stabilize up to a 80gr bullet and as light as 60. 55s tend to open up and the really light ones fly apart. 1/9 will handle up to a 65gr. I tried to shoot the 69gr ones and they would not group. the 1/9 will do great from a 50-65gr.

[romorris]

Ok. Thanks again for clarifying that for me.

[MyFartsRock]

I just purchased a Stag- Arms 6L in 5.56/223. It has a 24" .936 stainless barrel with 1:8 twist. I e-mailed Stag and they said I could shoot 50-80 grain. Any input would be appreciated. I didn't want to stock up on ammo before I could break her in and purchasing the wrong grain. My range only goes out too 200 yards.

[ammosmith]

My 1/7 barrel shoots the 50gr bullets just OK but it likes the heavier bullets far better. I would say 55gr-77gr would be your best bet. If you want something nasty try the 60gr Sierra HP. if you want bulk try the Winchester 65gr Power Point, all shoot great. Powder is a critical choice. H335 and Varget both are good choices.

[MyFartsRock]

Great! Thank you!

[gandb21]

I have a Marlin 1895GS in .45-70 and always wondered how the different methods of rifling affected stability. Mine has "Ballard" rifling as apposed to Marlin's more common "Micro-Groove" type. I would prefer the Ballard rifling over the others as it allows the use of much heavier bullets with wider meplats. Another great video! 5/5

[ammosmith]

The Ballard rifling allows you to shoot cast bullets as well.

[cadillacredd]

cool