Gunsmithing 284 8 twist

[GB213]

I have a 284 barrel with an 8 twist for a .284 or 7WSM or 7mm rem mag build. With a fast twist like that, am I going to limit myself to only the really heavy bullets, or will I still be able to shot 162 amax?

 

[perkinsd_theone]

Re: 284 8 twist

I am very interested in this topic as well. I am finalizing the build for a 7STW and not sure if I should stick with 9" like I currently have or drop to the 8". I will not shoot anything under 160gr and would love to only shoot 180 VLD's.

Any advice is appreciated here as well.

 

[TEAMSENDIT]

Re: 284 8 twist

i had a 9tw on my last 284 and it stabilized the 180's well so i would be concerned about overotation with 8tw and 162's only testing will really tell you though.

i would suggest looking at matrix bullets they make a 190gr vld that has better bc than any other 7mm bullet made i am pretty sure. I have a buddy who is currently testing them in his 7wsm and so far it looks like the bc are fairly accurate.

http://matrixballistics.com/.284-Caliber-rifle-bullets.html

 

[Goin'Hot]

Re: 284 8 twist

You'll spin the jackets off of the 162's in an 8 twist out of a 7 mag. Been there when it happened, again & again.......

 

[geargrinder]

Re: 284 8 twist

The 8" twist will work well with the 200g RBBT Wildcats and the new 180g SMK.

 

[mscott]

Re: 284 8 twist

7mm Rem Mag 8 twist + Retumbo + 162 Amax = 3,150 fps puffs

 

[perkinsd_theone]

Re: 284 8 twist

sure sounds like the 9tw is little more flexible.

 

[wnroscoe]

Re: 284 8 twist

I'd run a 1-9 by default in the 7mm. My 7/300 drives the 180's at 2,920fps with ease, very accurate.

 

[Ouch!!]

Re: 284 8 twist

Yup stick with the 9. I had someone tell me I would spin jackets off with 8. Unless I wanted to shoot solids.