Supposedly
according to an article in the Rifleman years back, it is is proved by physics that a bullet cannot 'strip' the rifling whatever the velocity or bullet materials. Why would the softer bullet then shoot so poorly? I'll guess that it achieves too low a velocity, and thus doesn't spin fast enough to be stabilized, or its base gets cut by powder gases so it gets tipped on leaving the muzzle.
according to an article in the Rifleman years back, it is is proved by physics that a bullet cannot 'strip' the rifling whatever the velocity or bullet materials. Why would the softer bullet then shoot so poorly? I'll guess that it achieves too low a velocity, and thus doesn't spin fast enough to be stabilized, or its base gets cut by powder gases so it gets tipped on leaving the muzzle.