The 375 Win is borderline in the Contender. I have never fired a factory round in mine and load them conservatively, all 4 of them are factory TC barrels. If I were going to order a barrel I would go with the Encore. If TC was still in business we could for sure expect to see barrels in the standard factory line up for both pistol and rifle by the fall hunting season. Thanks a lot Greg Ritz and S&W for intentionally destroying a great company.