soflarick
Right on the mark.. I have nothing against Glocks, but feel that there are better choices for less money. The Glock has a pretty loose chamber and that is were they get their reliability, so right off if you are going to reload and use cast bullets a new barrel is in order. It is pretty standard to have bulged cases with Glocks, just look up posts on the "Glock Smile". I have not been a fan of plastic sights since Crosman started putting them on their air guns. I would concur that polymer frame guns tend to shoot a bit softer than the equivalent metal frame guns and my understanding is that there is some flex in the frame.
If you do some shopping there are CZ clones out there in 10mm that come in under the 400 dollar mark, that have good sights and standard rifling. I think the only reason I have never owned a 10mm, is that I have over the years gathered up so much .45ACP brass, bullet molds, dies etc.
If one owns a .45ACP gun there are some pretty easy conversions to .45 Super, which has a slight edge over the 10mm. A friend of mine in Canada was telling me about a loading for the .45ACP that substantially increased the performance. This is the .45-08, they were taking .308 brass cutting it back to .45ACP length, reaming the mouth so the bullets would fit. The only alteration to the gun was the addition of a heavy recoil spring. The .450 SMC is based on a similar principal, they use heavier cases and accept small rifle primers.
Then there is the .460 Roland, but then the conversions get a bit more complex. Another choice is the .38 Super, in most instances not much better than modern 9mm ammunition until you start loading heavy bullets in the Super and you can get 1000 fps+ with a 158 gr. bullet.