Agunner012, your comments virtually echo what Sierra Bullet's first ballistics tech and manager told me some years ago. The more time burning powder has to eat away at the throat, the faster a barrel wears out.
It pleases me that Sierra is telling the good stuff to folks who contacts them.
This reminds me of my .264 Win. Mag. I used in long range matches years ago. The barrel went about 640 rounds before groups instantly opened from 3 inches to about 20 inches at 600 yards.
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