Thanks.XTP is one of my favorite bullets in any pistol caliber. I have 155gr xtp on hand but normally run the 180gr xtp for extra punch in the 10mm. I have only finished off animals that were first downed with a rifle using my 10mm, but from the terminal performance of the XTP bullets on animals that I have witnessed over the years, I wouldn’t hesitate for a second to use them for handgun hunting. They are very accurate, hold together and mushroom very well, penetrate deep, and cause a lot of damage
It’s not cycle issue or feeding issue it’s saving the wear and tear on your lower frame by full power loads. 22 pound spring is the most common and what I use.I’ve never had any cycling or feeding issues running hot 10mm or mild 40 S&W loads with the factory setup. I did upgrade to the NDZ spring because I wanted the stainless guide rod but I don’t feel like the extra weight of the spring gave me any advantage over the factory spring
Glock 17 is the bestProbably best G20 would be with a polymer80 frame. I know the poly80 frame makes it ‘the best’ G19!