I own a Blk. Dia. XR Express 50 cal. The recoil is moderate & accuracy is great. I started with 209 primer but switched to musket caps as they were easier. The clean up is longer proccess than i used to do on my Renegade. It is tight fit on Hornady Sabots & a range loading rod is almost a must. I will try other sabots in the future because i am in middle of deer season at this time. I do love my ML!