I shoot them out of my SKS rifles loaded with a .224 52 gr. BTHP at around 3K fps. Accuracy suffers to some extent as the sabots are for .308" bores and my SKS rifles have .312" bores but there still minute of beer can at 50 yds. and thats good enough for what I use them for. It's a good idea to flare the case mouth like your loading pistol bullets so you don't shave material off the sabot. I need to get some more.