Watch your PMC ammo for high pressure signs when shooting it- it might be a little hot for a 96 mauser. I have a few boxes of the stuff that I'm just going to pull the bullets from and reload because I got a sticky bolt and flattened primers while trying the stuf in 2 different rifles.
Ditto to what thndrchiken said about the throat- even with the extremely long 6.5 bullets, its still not possible to seat anywhere near the rifling, just set the bullets so that they fit and feed from the magazine properly. I also get good groups with 140 gr rem corelocts- thankfully as I bought a box of 500 of them
With the 4895 I would start a few grains lower and work up to that load- its about a 1/2 grain above the maximum load listed in the Hornady manual though a Sierra manual might have different listings for maximum charges. I use 4064 at 46.5 gr. with the 140 gr bullets.
Alcohol, Tobacco, and Firearms... who's bringing the chips?