Originally Posted by cpttango30
That is because you are at the point of diminishing returns. You are so overboar with that cartridge to begin with that just changing the shoulder isn't going to give you much improvement.
22-6mm is one of the more wasteful cartridges out there. It burns way more powder than is needed to reach velocities that do nothing but erode the throat and barrel.
You missed my point tango. I was ribbing hardluk about his 1000fps typo.
150fps or so is the approximate velocity gain you'll see out of any of the AI versions. Not bad considering he didn't develop those wildcats for the velocity gain.
And getting off track, but the 22-6mm isn't a barrel burner unless you load it that way. Same as a 22-250 or a Swift.