Remington GB run like **** (FTFs, FTEs) in my :
GSG-5
Browning Buckmark
Browning Challenger
Walther P-22
Ruger 10/22

The only gun I have that will eat Remington GB is my old Marlin model 60, and my Remington model 552 Speedmaster. But then again, they'll eat anything. I'm not even going to bother to try them in the M&P15-22.

Federal 40 gr solid and 36 grn HP run more or less flawless in all of the above.

I'm not sure if it's the shape of the GB bullet, or the fact that they seem to be over waxed. But they only seem to seem half way reliable in my tube fed rifles. I pretty much avoid

I prefer CCI Mini-mags above all.