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.
