Anyone had their GP100 rechambered to 356 gnr? I'm wondering what kind of service life is to be expected from a gun that you rechamber to a cartridge having twice the energy of what the gun was designed for. I think it's really cool. I'm just hesitant, I don't want something that will wear out in no time. I read on here someone said the factory stainless barrel can't withstand the 1800fps, which I'm not sure about either.