Hi everyone, First post here. I just bought a new to me 300 Win Mag benchrest rifle. This is a full custom Clay Spencer Benchrest rifle. The guy I bought it from gave me his handloads data that he had worked up for it. He has a couple world records in benchrest shooting, so he knows what he is doing. I ordered a one caliber one book reloading manual because I may try some heavier bullets with it. When I looked up the loads for the powder that came with the rifle, I noticed that the max weight for the powder is listed at 62 grains, and the load data he gave me callled for 68 grains. The velocity of his rounds are 2,800 fps vs 2,500 fps in the manual. I had loaded some rounds with the data he gave me, and I have six rounds he loaded, so I compared the weight. The weight is the same. So it isn't a typo on the papers he wrote the load data on. So, my question, is it safe to go above recommended max loads? His data is 68 grains IMR 4350 and a 215 Berger Hybrid, at 2,800 fps.