These are the slowest tested to date and they have a wax/grease on them. I doubt I buy anymore after this test.

Ruger MIII Target 5.5" barrel 875, 856, 862, 914, 883, 879, 835, 884, 886, 879. Average = 875.3 FPS/ 68 LBS

IIRC, those are "Gallery" rounds. Meant for indoor short range shooting. The wax is a hard lube as used in Cast bullet shooting.

Would be good for use in a suppressed gun, what did they cost? i dont think i have seen those before.

They were $5-$6 for the box of 50.

I've shot a fair amount of Geco in .357 Magnum, and really like them enough to try their .22LR if I could ever find any in stock at a decent price which I haven't been able to do, but after reading this, much too expensive for what they are.