Originally Posted by JR
I think the only thing I can do, is change the barrel description on our web site to offer the purchaser a match grade chamber (as stated) or a reloaders chamber similar to the one offered by all the others?
Actually, I think that is the only solution. It is a fact that lead bullets are 0.001" larger in diameter, by design. This increased diameter is not a reloading error, it is intentional.
If every dimension matches the SAAMI spec, with a lead bullet there will be zero clearance because the increased diameter of the lead bullet eats up the 0.001" clearance that the spec allowed. Zero clearance just isn't workable.