Dale;Originally Posted by gotcha
"My question is how do you adjust case HD SP on brass thats getting tight in the chamber after firing?" I FL size the cases. Even shooting LV cast bullet loads, I find that neck-sized brass gets tight = resistance to bolt closing, and must be FL sized now and then.
"And, how do you insure the die you're using is "in spec" & not under-sizing the case?" My first answer is that I believe that the chance of getting an out-of-spec RCBS or other big name sizing die is right around zero. My second answer is that when we use a fired FL sized case to set HS, we're doing so for THAT die and THAT barrel/chamber, other dies and chambers may not "go with" the original fired case.
I think this. A case fired in any gun is bigger than a new case, and has blown out ot just under that gun's chamber size. The fired case cannot be shorter after firing, in the HS dimension, unless the case had been forced into a short chamber. So the fired case HS dimension is at least minimum. When the case is FL sized, there should and must and will be resistance in the press means that the press/die is squeezing something down. Then the fired FL sized case HS dimension is at least minimum HS dimension. Set the barrel HS with this case and HS is at least minimum HS dimension.
This is all true, I think, as long as the die and chamber are within spec AND the case doesn't get squozen down during setting HS and the mechanic understands what he's doing and is careful and checks for bolt closing resistance when there's a piece or 2 of scotch tape on the case head.
I think.
joe b.
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