Re: heavy bullets in 22 hornet
Not just a question of throating, but of twist rate. You could certainly do this, but you'd need to build the gun from the ground up just for this application. A longer throat, and a significantly faster twist. Remember, the Hornets were originally intended for 40-45 grain bullets, and most use twist rates that are suitable for those relatively blunt, stubby projectiles. I've seen many in 1x14" and a few in 1x16" twists. With the 70 grain bullets you're talking about here, I'd expect to need at least a 1x9" twist, or threabouts, depending on the bullet's profile. With the Match bullets you'd mentioned, you're talking about a fairly long, streamlined design, which will tend towards an even faster twist.