after talking with CZ I found out the feed rail is ok or at least they don't change that when they ream it out from the 458 winnie---

thought it might be the mag box, so I removed a little mat'l and polished the inside of it to give the rounds some room to move--didn't work--

so then I looked over the A-square ammo that I've been playin with and noticed that some of the actual bullets had a ding or small crease where they're hitting the chamber when trying to feed-- I know it was stated by someone that maybe it's the shape of the bullet and now I think this is the real culprit, so about the only thing I can do is massage the ramp some more--I'm debating on doing more of this or sending it to Jim Brockman--will let you know