My white mountain carbine shot very well with patched rb using 30 gr of fffg goex blackpowder .
I took my first 2 deer with blackpowder with it,using 80 grains of fffg and a hornandy xtp 240 gr 44cal sabot.Powerful enough for woods hunting and not alot of recoil.If I remember correctly,it chrono'ed about 1500 fps,but it has been a few years.