i bought one new for about half what a new stainless costs, reamed it meself, carefully, using a wooddowel and valve grinding compound, the thing will throw 250 grain homecast 44 magnums into a 3inch circle at 1oo yards all day long...well, as long as i can hold it...it doesn't take long to ream it out, but there are better ways to do it,like let your trusted machinist do it, but it can be done by hand....carefully, checking the pin-fit very often...