A question from a newbie. After splitting one case and wrinkling a few seating cast boolits (38 special) I measured the boolits and checks. The gas checks measured .359" diameter, the boolits a bit over .358" (I don't know if the sizer that we used was .358 or .357). The problem did not occur with most of the cases, but the cases are a mixed lot of different manufacturers and uncertain provenance. I think that I can probably expand the cases a bit more before seating the boolits, but...
Is this a normal situation with gas checks?
Should I not use the boolits?
After measuring the 38 boolits I decided to measure some .308 boolits that were sized to .309; I found the gas checks to be .310, the boolits a bit over .309. From reading on these forums I am not surprised to find that the sized boolits are not precisely .309 but I am not sure what to make of the .310 checks.
Tom