Re: .223 A-Max 80....jump or not?
I'm going to guess you're shooting these for match or match practice, so single loading in the mag is what you're doing anyway.
Mr. H is right on keeping them as long as possible if you're throated for it. I've found that the Amax seem to like a bit of a jump, between 5-20 thou as opposed to the Vmax liking about 5 thou of jam in my rifles.
This is across several calibers, not just 223