I was looking to purchase a new g20 because I want a more powerful gun than my g23, g26 and g30. I have been reading that Underwoods 10mm ammo looks like it is powerful and a good value. I like keeping my glocks stock. I see many folks here swapping out barrels for supported chambers and recoil springs. Is this necessary to shoot hotter ammo like Underwoodsor am I good stock? Thanks!