I will contribute this.
They are questions that first appear to not be legitimate and to me this looked like one.
Sorry to have upset you. But it doesn't take much knowledge to know that for a FA revolver, even a M97, that 2000 rounds through one is nothing with anything approaching a half way decent load.
Even a Ruger New Vaquero with take the 45 Colt Keith load with good life and 2000 rounds is not even a break a sweat on amount. It is a 6 shot cylinder.
Sorry to have ruined your day but it seemed like, to me, a screwy question because, like i stated, with just a limited amount of knowledge the answer would have already been know.
Again i am sorry.
Oh yes, go the Buffalo Bore ammo site for the 45 Colt +P ammo and look at the 1200 fps 300 gr load they load for the M97.