Looks like small primer 22-250 AI to me as well. But, those groups above mean you can repeatedly hit a chipmunk’s eye, no one will complain about that.
Just out of curiosity, has anyone ever made a 30-06 or 300 win mag length .378” rim diameter 22 center fire? IE, a long action only 223.
The rapid throat erosion the 22-250, Valkyrie, and especially the 220 swift suffer from seems to stem from the blast trying to escape from a .473” bolt face case down a .224“ hole. Imagine water flowing down a 4” pipe that instantly shrinks down the 3/4”, pressure jumps tremendously. Looks to me like cartridges do the same exact thing. I just wonder how a long action only 223 case with less shoulder would perform?
There might have been a Rook or something similar to it, but im not aware if one.
I dont believe theres ever been a .223 extra long, tho the 222RM is a tad longer.
I get the feeling a very long very narrow case would cause manufacturing as well as performance issues but thats a feeling than any hard opinion.
Anyone have any 1st hand experience with the 22 Creedmoor? Caught my attention the other day and looks like an interesting round.
The barrel burners cram too much powder into too small of a hole, 7 stw, .264 wm, .270wsm, 6.5 leopard etc etc, the .22 cheetah and .22-06 were both hard on barrels and brass, bolt face has little to do with overbore syndrome.Looks like small primer 22-250 AI to me as well. But, those groups above mean you can repeatedly hit a chipmunk’s eye, no one will complain about that.
Just out of curiosity, has anyone ever made a 30-06 or 300 win mag length .378” rim diameter 22 center fire? IE, a long action only 223.
The rapid throat erosion the 22-250, Valkyrie, and especially the 220 swift suffer from seems to stem from the blast trying to escape from a .473” bolt face case down a .224“ hole. Imagine water flowing down a 4” pipe that instantly shrinks down the 3/4”, pressure jumps tremendously. Looks to me like cartridges do the same exact thing. I just wonder how a long action only 223 case with less shoulder would perform?