Re: best recipe for Glock 22
I have a Glock 22 40S&W.
It came with a chamber that was cut with a feed ramp .235" deep, with case webs only .180" thick, but the chamber was cut large in diameter.
The rear of a 40sw chamber is registered with SAAMI at .4284" +.004" and .4274" + .004" when .200" deep into the chamber.
My chamber is .440" at ~ .2" into the chamber.
Most chambers are cut at the small end of the sloppy SAAMI spec, my Glock was cut to big to make spec.
For an old Glock 22 40 S&W the feed ramp intrusion was .235"
For 40 S&W brass of various brands, the case web is .180"
That leaves .055" of thin unsupported case wall.
If I handload a round with 35% more powder than the max published load, I find the threshold of case bulge in the old Glock.
If I weld up the feed ramp and re cut the feed ramp and chamber with .000" of thin unsupported case wall, I cannot get case bulge with 146% extra powder. It is difficult to squeeze that much powder in the case and the recoil is horrific.
I can still feed any bullet without jamming.
I do not know what Glock thought he was doing with the way that chamber was cut.
What does it all mean?
Consider an aftermarket barrel with better case support.