Here's what I use. It's a 2x2 drilled 1st with multiple sized holes, then I split it length ways (ripped) to almost the end (not in half).
I insert the brass in the appropriate sized 2x2 hole and place the 2x2 into a vice under my drill press and squeeze the 2x2 to firmly hold the brass. I then use the drill press to bore out the primer pocket. Next, I remove the drill bit and replace it with a tap. I manually turn the drill press arbor by hand to start the tap straight. Then, leaving the started tap in the brass, I remove the tap from the drill press and continue the final tapping by hand. This ensures the drill press doesn't turn the tap too fast stripping the threads.
The hole labeled 308 is used for 6ARC, 6.5CM, 260Rem, 308Win, 30-06, etc. The 300 hole is for magnums.
OH NO!!!This folks is advanced thinking outside of the envelope. Its really a great idea and a mosh of wood working capacities and metal working. I'd make it better using maple or some harder wood, but you cannot argue with the outcome as far as I can see. Everything in his process makes total sense, bet it can be replicated easily if you have a drill press, a table saw and some brains....
Did the same thing….Cool! I have been making my own modified case for quite some time now. It cost me <$10 for the drill and tap. Since I already have a portable drill press, it works like a champ for me.
I am a sucker for innovation, and might still invest in one. Thanks for sharing.
Great idea! Making one shortlyHere's what I use. It's a 2x2 drilled 1st with multiple sized holes, then I split it length ways (ripped) to almost the end (not in half).
I insert the brass in the appropriate sized 2x2 hole and place the 2x2 into a vice under my drill press and squeeze the 2x2 to firmly hold the brass. I then use the drill press to bore out the primer pocket. Next, I remove the drill bit and replace it with a tap. I manually turn the drill press arbor by hand to start the tap straight. Then, leaving the started tap in the brass, I remove the tap from the drill press and continue the final tapping by hand. This ensures the drill press doesn't turn the tap too fast stripping the threads.
The hole labeled 308 is used for 6ARC, 6.5CM, 260Rem, 308Win, 30-06, etc. The 300 hole is for magnums.
Yes, that might be necessary. I can't remember if I had to file/camfer my primer hole level after tapping. I don't remove my cartridge from the Hornady gauge when I measure CBTO, consequently, my calipers don't get near the primer hole.The only thing that is missing in this process is chamfering the hole you just drilled and tapped to remove the flashing on the outside edge of the hole. This flashing can create false readings with your caliper.
The Hornady gauge screws completely up inside the threads of the case head. You HAVE TO measure up against the base of the case head to get correct measurements. Obviously you leave the case attached to the gauge while measuring.Yes, that might be necessary. I can't remember if I had to file/camfer my primer hole level after tapping. I don't remove my cartridge from the Hornady gauge when I measure CBTO, consequently, my calipers don't get near the primer hole.
The problem I've had with that kit is crushing the cases out of round.