Several years ago, without a complete understanding of the wide meplat terminal ballistics, I created several cap n ball pistol bullets, one of which is rather heavy and meant for my ROA. I've toyed with the idea of buying a resizing die to bring it down to .451-2" and trying it in a sabot in my 1:48" twist rifle.
First off, after reading what I did, a wider than 78% meplat wasn't ideal as it had a tendency to stray off course and not plow straight forward. But the way I read this was also concerning rifle bullets traveling at a higher rate of speed. Is this an issue under 1400 fps (beyond 100 yds impact velocity)? This is the bullet in question having something like an 83% meplat sized at .452" (pistol):
http://www.accuratemolds.com/bullet_...=45-285C-D.png
I've been redesigning my previous bullets but wondered if speed was the issue behind a bullet deviating from its initial path or if there's just a point at which they become unstable due to meplat width.