Like a few have said it’s a guide.
My 308 doesn’t like the SSTs at all.
Loves 130s TTSX with 47gn of 2206h
Load testing is really the only way to go. Find what works as what works in one rifle wont work in another.
Also don’t be stuck on “I must use this projectile”
I always ran factory 150s in my 308 and once I started reloading I found the 130s to be by far the best.
And when I want a “cheaper” round, I run Hornady SP 130s instead.
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