Originally Posted by barm
I bought a box of the 70 grain Speers to try in my 1-12” twist 221 Fireball. The box says 1-10 “ twist or greater. Has anyone had problems stabilizing these bullets in a 1-12?

I'm wondering about the 12 twist also. I was going to buy some to try in a 12 twist 22-250 that shoots the 63 gr. Sierra SMP's well.
Does anyone know if the Speer 70 gr. is more or less fragile than the Sierra 63 gr.? There hasn't been much left of the Sierra 63 gr. bullets in the deer I have killed and none have exited, however the deer remained quite dead.