Hatcher used his pocket knife. A dealer had cases for sale, someone had used a counter sink, I believe that was some of the ugliest primer pockets I have ever seen. I want all the primer support I can get, lowering the primer pocket hole with a bevel is like using a bevel on a datum.
Counter sinks, I have counter sinks, thousands of them, most are aircraft countersinks with guides, I use them when forming cases, sometimes I use a hack saw and file, other times I use the air craft countersink.
F. Guffey