I tried the Grand Slams in my Roberts with less than inspiring results.
I got them REALLY cheap. $2.50 per box at an estate sale. So I figured they would be fine for our little Texas whitetails. Hell, deer aren't that hard to kill.
I'm normally a 100 gr Ballistic Tip guy. I use a pretty mild load of 4320. It is loping along around 2,900. I rarely shoot over 125 yards when deer hunting on my lease.Little meat damage and they rarely run at all.
I figured if nothing else I could shoot up some hogs with them.