Originally Posted By: reloader326The Barnes 85 Gr. would be considerably longer than the 75 Gr. Sierra's I'd suspect. Might be too slow of a twist in the AR for the longer bullet....?
This is the info I'm looking for but couldn't find on their website, do you know where it can be found? I'm looking at around 2800-3000 FPS out of the 70 grainer.
Possibly the 85 gr. could be better suited for a faster twist, not sure. However, I learned that a conventional bullet out of my 6x45 worked just fine for my
intended purpose and was much cheaper to purchase as well.
2800-3,000 fps in my opinion is expecting too much from a .223 case and a 70 gr. bullet. Once again as DD mentioned, you can go lighter and do as well, maybe
better, particularly with accuracy.
I phoned Barnes and spoke with a rep specifically about the .308 and bullets I wished to use. My aging mind doesn't remember exactly the velocity he told me,
but it was araound 1,900 to 2,000 fps as I recall. I also read a piece somewhere on the net that said basically the same thing. I had been shooting 150 TSX
and getting great groups, generally 1/2" 3-shot groups, but decided I wanted to make sure the bullet performed as it's supposed to, so I went lighter to 130 gr.
hoping for accuracy. It's accurate (TTSX) but slightly larger groups, about 5/8" or so. No hog on Earth will know the difference.
Here's the 130 TTSX as recovered from my hog. The bullet performed great as you can see.
https://www.youtube.com/watch?v=vJClkkYIs5U&t=7s