I always use 20gr Gamepoint, never any issues with correctly stored ammo, only problems have been with rounds that got very wet out shooting, then they failed to go or produced hang fires when chambered at a later outing. Very important to keep this stuff dry, it must be prone to taking on water.
Worst ammunition I have used was Remington, black plastic tip 17gr, poor accuracy, bullet blew up in eye socket of rabbit at 100m and failed to penetrate skull, rabbit still alive when picked up, I will stick with 20gr Gamepoints excellent results on Fox, or so I believe , hmm.
Just to correct my very good friend Finnbear270, CCI make all the 17 HMR ammo, but some manufacturers provide their own bullets (17 gr, speer TNT, Hornady V max, Remington ??) ( 20gr. Gamepoint, CCI and Winchester) Winchester proved very good, late to the party ammo was very well priced and I bought 3000, still working my way through it ! Tried some 17gr CCI TNT Hollowpoints, accurate but poor knock down even on rabbits.
my contribution
FlyBoy270