RiverratMike
Member
The other thread on this subject got too old so I had to start another. (the concept sort of hits close to home) Anyway, I am using a standard RCBS seating die for .308 WIN in a single stage press. Using a digital caliper, I was measuring the finished rounds from about minus 2 to up to plus 8 thousands. As was mentioned elsewhere, this couildn't be because of a variation in bullet or casing length. I changed to a new out-of-the-box die and sure enough the old one had metal fragments in it. Ah Ha! Trougle is.....this was an improvement but, while more were the correct COAL, there was some that were about the same error. Would a RCBS Gold Medal Seating Die, which has micrometer anjustment and a visible works, be any improvement? The latter runs about $70 and is the only brand not on reorder status. I still can't work out what is happening. Any help would be appreciated.