As a group of competitors and reloaders wildcats are at the core of innovation and just downright fun.
I’ll share my favorite, which is a bit biased since I had the idea for it— the 6MPW (Magnum Precision Worldwide). It starts with a creedmor, and sizes the brass to a 40 degree shoulder with a longer neck, and maintains the neck shoulder junction on the original creed.
It’s a marginal improvement over the Creedmor, but accomplishes it with no fire forming, as someone who has done lots of fireforming, I sure don’t love it.
One day I was showing a newby something about reloading in my office and grabbed the wrong piece of brass, ran it through a Creedmoor die, and was startled Speach Les for a bit by the result. I had run a .260 case through the die . . .
Longer neck, sharper shoulder, etc., looked interesting to me, but never pursued it any farther.
How close to a 6X47 do you think you came with your round?
Shoulder body dimension is at 1.486 vs 1.405, so it’s notably more. But in many ways similar— I imagine an Ackley 6x47 would be real close— but x47 brass is certainly not as prevalent.
By using the creed shoulder body dimension, when using a neck shoulder bushing sizing die you are able to use the same die for standard creed as well as the MPW.
I need to get back to shooting it. Too much going on.
Interesting design. Over the years I have messed with some wildcats, even though some told me I was wasting my time. Currently, I working with a 6 BRA. It has became so popular, it don’t even seem like it should be a wildcat. It is shooting very well. Yes, fireforming can become a little tedious at times, but I have always learned something shooting wildcats.
Lately, I have tweaked some reamer specs of existing cartridges. That as also been educational. Thanks for sharing your information.
I really like the wildcats too, I have several including the 6 BRA, 6x45, 223 AI, 20 Practical, 25 Grendel and 6.5 BR. I’m now considering the 20 PPC or the 20 Pup.
Shot some more with the cartridge, really likes the Berger 120. The 120 is a phenomenal bullet, but in my opinion needs a GT at minimum. The mpw is pretty ideal for the new bullet.
I have shot a couple prone matches with it and it has performed well, and certainly puts a LOT more energy on target compared to my smaller 6mm with 105/109
