Accurizing a Grendel - Accuracy Advice

[lazyengineer]

Lazyengineer,

Thanks for the detailed response! I think my next barrel will be a 1:9 like you recommend. My current barrel is a 1:8, 20”.

I am currently running a Geissele trigger, so should be good on that front.

I actually had picked up a couple boxes of the 90 grain TNT bullets you recommend. However, this rifle will primarily be used as a deer rifle (for my daughter) so I was focusing first on finding a good deer killing load. That said, if you have a favorite load combo for the TNT rounds, I’d sure give it a shot.

As for pistol grip I had a few laying around and went with the one my daughter preferred which was actually the standard A2 grip.

In my experience you can pretty much run TNT 90's with charcoal, and still get 1 MOA. I also consider it a viable deer bullet, considering the huge number of very tough big hogs DNS downs out to 300 yards with one-shot-drops, constantly. I'd run that bullet on deer out to 200 yards without worry, personally. I dropped a >200 lb hog one-shot-drop with a TNT 90. If it can do that to a tough hog, it sure can drop a 150 lb thin-skinned deer.

In 7.62x39 brass, I run 26.5gr LT32. In regular Grendel brass, I have lots of good loads, and run 30.8 gr of CFE223, or 31 gr IMR8208 or 31 gr TAC. All of them shoot 1 MOA or better, even in barrels that I struggled with in general.