Well....finally obtained a couple bricks of primers at retail prices (the $80 a brick days are over). So, starting load development on my 300 win mag. Tumbled the prepped and resized brass (Norma, Nosler) and they came out all clean and shiny including the primer pockets. BUT....EVERY PIECE of Nosler brass had media stuck in the flash hole! I had to poke out the media with a small wire. I used the same tool to clean the primer pockets for both the Norma and Nosler brass. All of the brass is from fired factory ammo. Sooo...logic would dictate that the flash hole on the Nosler brass is smaller. I don’t have a flash hole debur tool because all of my new brass (Lapua, Nosler) came with the flash hole de-burred.
I deduced that I need to go out and buy a flash hole debur tool. And then down further into the rabbit hole I went. I like K&M products, so made a trip to their website. They have two different sizes of tools, one for “standard“ flash holes (.080”) and one for 1.5mm (.062”) for Lapua cases. Scratching my head, I measure the de-capping pins on Lee and Hornady dies. Well...that revealed .070” and .072” respectively. Maybe just maybe, the Lapua flash hole size of .062” is for small rifle calibers? I pushed the de-capping pins through the new Lapua large rifle brass that I have and no resistance. I then bought the K&M flash hole de-burr tool with a .080” mandrel. I think I am out of the rabbit hole now, but I need a sanity check!
I deduced that I need to go out and buy a flash hole debur tool. And then down further into the rabbit hole I went. I like K&M products, so made a trip to their website. They have two different sizes of tools, one for “standard“ flash holes (.080”) and one for 1.5mm (.062”) for Lapua cases. Scratching my head, I measure the de-capping pins on Lee and Hornady dies. Well...that revealed .070” and .072” respectively. Maybe just maybe, the Lapua flash hole size of .062” is for small rifle calibers? I pushed the de-capping pins through the new Lapua large rifle brass that I have and no resistance. I then bought the K&M flash hole de-burr tool with a .080” mandrel. I think I am out of the rabbit hole now, but I need a sanity check!