I found out I don't like 150 gr in this gun either. I shot 3 pellets everytime I've shot it. I have the see thru mounts on mine so was sighting in the open sights first. The first time I shot I was looking at the open sights and it kicked way way harder than I expected and the scope came back to hit me in the forehead. I should have payed attention to where the scope was instead of just looking at the open sights under it. I shot probably 15-20 times and my shoulder was sore. I'm not old either so that wasn't it. This thing just really kicked. Almost like my 12 gauge with buckshot.

I got the open sights sighted in great with 150gr and a 295 grain Powerbelt HP. This is at 61 yards. I wanted to sight in it for that and then the scope for 100. Now I've decided I'm going back to 100gr and going to try Tripple 7 pellets out as I had a hard time finding the Pyrodex regular ones. So I'm going to have to resight the open sights in. Oh well. Seemed with 150 grains almost like the bullet was ripping through the target on some shots rather than going through straight. This is another reason I want to step back to 100 and see what it does. I've always shot 100 grains in my old muzzleloader so going to try that out on this one and hopefully not have it kick so hard.