I am wondering what the effects of too-hot loads are on the original style Contender. I have one in 30 Herrett, and am still trying to figure out how to build loads that are at the top of, but not beyond the gun's comfort zone. (Not my comfort zone, the gun's.) The cartridge seems to have been designed to shoot a case full of IMR-4198 at about 48,000 cup, but loads in manuals don't seem to go there anymore. Manuals have loads that are all over the place, with cautions about large variations in free-bore in different barrels. Accurate Powder's loading manual says that Thompson Center told them to keep Contender loads below 42,000 psi, but TC claims to have no memory of telling them that. And, the gun has been barrelled in higher-pressure cartridges like the .375 Winchester and the 6.5 JDJ.I have an old contender a 195000 range.It tore up quickly with the 375 jdj I shot about 50 times.I hated that it tore up that sucked.I have to send it to TC now.