Re: New gun/what caliber
I am playing with two or three ideas right now. I took a 300 RCM, and ran it through my Boer 8mm Mag. forming die. This one only puts taper into the basic 375 Ruger cases. It equals the taper in the 8 x 68 S Schulers and the 458 American. My goal is to end up with a 1.75" long case in 270. It will look a lot like the old 6.5mm x 50 R Japanese. It will be fitted into a Black Hole magnum lefty upper. I think I'll use the banana magazine used in the AK adaption. With solid gilding metal bullets, and a slow twist, I can make it sing. With a quick twist, the bullets will have to be seated pretty deep, and that will cost plenty. But this puppy should chamber out of a M-98 Mauser, which in Rem6mmBR, is only a single shot, now.
Last month I dropped three antelope in the Karoo, of the RSA, with a left handed Ruger MKII, and Federal 270 Win. ammo using 110 gr. Barnes. I only recovered one bullet, driven some eight inches into the spine of a fast departing Springbok, and that one sample still weighed 104 grains. I think the rest was just the delrin tip. One way or another, I managed to kill them clean and not damage their front shoulders, forward, or mess up the meat. My Blesbok and Springbok went SCI bronze, and a silver for the smallest species, a Steinbuck. So, this little 270 idea, based on a shortened RCM case, should be death on wheels, in a AR-15, with a banana magazine.
But it could be a re-barrel prospect in just about any old military rifle action. This is what makes it so interesting to me. This idea is predicated on using solid gilding metal bullets. Andy Baker of Black Hole thinks a 100 gr. spitzer will be about the shortest bullet shank which will be accurate in the AR-15. The heavier bullets, using a quicker twist, will be more for a bolt or pump, rather than the AR.
I don't know at this point, whether it will surpass the 6.8mm Spc. 2, enough to make a difference. But my soldered up dummy has almost 50 grs. of H2O, to its case mouth. The quick twist would make up a neat bolt action Bushveld rifle for collecting hides, and wild meats. The problem is that the Black S.A. Gov't doesn't want any black rifles coming in, on Safaris.