Will 1/8 twist work?

[Bendersquint]

Hi all,

Long time lurker and 1st time poster.

My question is very simple. I have an opportunity to get a 300/221 barrel for my bolt gun for dirt cheap so I am want to jump on it.

Facts:

I will have a suppressor on it more often than not.
Barrel will be 18" and threaded 5/8x24(common 308 thread pitch)
I want to be able to shoot everything from 147gr to 240SMK's.

The barrel is 1/8 twist. I know that will stabilize the bullets from 190-240gr, will it stabilize the 147gr bullets so I can use the suppressor with it? I have read that 1/8 is the way to go and good all around is this accurate?

I don't totally understand twist rates as noone can give a clear answer anywhere so...

'Faster twist' is 1/8 twist and a slower twist is 1/12 twist right?

Thanks in advance. Have to give him an answer tonite so thanks for the replies in advance!

-B