Come along now!
I have a "B" model Coonan with a stock 5"barrel, and I must say it seems stouter built than a Glock, but some of these FPE numbers would have me worrying about grenading either of them. Call it prudence (yellow), but if I want or need energy levels this high, I'm carrying a bigger gun! Rifle powder in pistol cases is fine for rifles, and a model 28 will stand them, but they are difficult to extract 6 at a time. 10 mm has a nice long case with good capacity, but why batter the pistol. I like to treat my guns like good friends, so they stick around awhile. If I want to fire 6,000 proof loads, I'll go looking for a 10mm USP.