My G 36 has functioned at 100% and I use Speer Lawman 185gr FMJ. When carrying use Speer Gold Dot HP for short barrels. The recoil has a bit of a bite but the slim frame makes for better concealed carry. I am 69yrs old with some nerve damage in the palm of my shooting hand. I can only fire 25 to 30 rds before it gets real uncomfortable.
Certified Glock Armorer
Tavor Level One Armorer
It is all about shot placement.