I have been offered two barrels, both are 10", one is 6.5 tcu and the other is 7 tcu. Could someone with experience using these calibers in 10" barrels give me an idea as to accuracy and how they would perform on deer size game? I have a 6 tcu and 7 tcu in 14", but am concerned about the loss of velocity and increased muzzle blast from the shorter barrel.