Thanks but I really need the .348 dimension. In trying different loads and patch/ball combinations I have found the .348 to be the best fit. I have yards of matress covering from uncle sam and when used in conjunction with that, the .348 allows me to load a patched ball with thumb pressure and ram rod alone. If I go to a heavier/ bigger ball, loading becomes harder, a starter being required to set the ball into the barrel. For the added effort I get no increase in accuracy.