No Chamfer Creedmoor

[Kracken McGraw]

I had been wanting to try a Lyman M die on a small bulk run of of 6.5 Creedmoor, mostly to save some time and wear on tools and me. I also used a Lee Factory crimp die at the end to finish. One positive was the way the bullet would sit squarely in that 1/16 deep flare when getting ready to seat.
Not promoting this but just another way to skin a cat. Lyman doesn’t make a die specifically for the Creedmoor, so I had to grind off the face of the die nearly a 1/4 inch to make it work. I’m guessing Hornady may want a little piece of of anything that has the Creedmoor name on it, lol.

 

[GLShooter]

Great innovation.

BTW Creedmoor is a SAMMI cartridge so it is open source for the industry. Anyone is free to make and sell stuff for it. Once SAMMI is established trademarks and proprietary rights go away. Bill Alexander had the Grendel trademarked for years then when it went to SAMMI certification he had to give it all up.

 

[Kracken McGraw]

Great innovation.

BTW Creedmoor is a SAMMI cartridge so it is open source for the industry. Anyone is free to make and sell stuff for it. Once SAMMI is established trademarks and proprietary rights go away. Bill Alexander had the Grendel trademarked for years then when it went to SAMMI certification he had to give it all up.

That’s good to know about being an open source then. I tried to get Redding to make me a trim die for the Creedmoor one time and the response back was that management wouldn’t consider ever doing it, so I didn’t know.

 

[WSnyder]

Lee makes a case mouth flaring tool in case someone wants to do this without using a mandrel in the neck.

 

[BoydAllen]

I became aware of, and started using an M die years back as part of my rifle cast bullet program. The unique feature of these dies is the profile of the expander. The mandrel is mounted on a threaded shaft that is adjustable within the body of the die, much as you wold a seater stem. As you adjust the stem downward, it first forms a step inside of the neck that is slightly larger than bullet diameter above the step. This is formed by a slight square edge. If you want a flare, continuing the adjustment farther into the case will produce that above thee step, with the amount of flare being controlled by the adjustment. For flat base bullets this step allows the bullet to sit straight in the neck before being pushed down during seating, I have never heard of using this method for BT bullets, but I can see where, particularly with progressive loaders it would save hand work. Congratulations on your "out of the box" thinking.