I tried to reinvent the wheel back in '81. Decided to build something that "had never been done" Little did I know that virtually every case ever made had been concieved had been wildcatted into every conceivable form already.
My hotrod? I built a .22-06 Improved, the typical Ackley .30-06 case simply necked to .22 caliber! Built my hotrod on a VZ24 action, a 26" E.R. Shaw barrel with a 1:10 twist, and a Bishop stock, Canjar trigger, and the old Beuhler safety. Slick looking rig, with a heavy sporter barrel and classic style stock. Thought I was building the king of coyote rifles for use on Southern Oregon desert yotes.
In the shooting tunnel at OIT, in Klamath Falls, Or. I test fired this sizzler. Three shots at 100 yards didn't even register on a 14"x14" target! This after careful bore-sighting of the Redfield 3x9. Moved the target to 50 yards... still no registered hits after three rounds. Moved again to 35 yards... looked like a shotgun had hit it! My Hornady 55g SPBT's were coming apart in flight.
Even had FMJ's come apart once I got them up to 4300 fps. I was crazy then, and the pressures must have been through the roof! That gun never did shoot anything well over about 3900 fps. Got some acceptable groups at around 4,000, but basically ended up with a glorified .220 Swift for velocity, when it shot well and bullets held together!
What a lesson! That rifle, the dies, brass and everything but the scope went away the next spring at a local gun show! I figured at that point there was a reason that there wasn't a '06 based cartridge in .22 caliber on the market.
Just a lesson I learned nearly 20 years ago now... one that was an expensive teacher.
Marshall