I have one of those rascals with a stock I bought from Fajens, when they were still in business. I was in my mid 20's at the time and put a then new to the market Leupold long eye relief 2x scope on. Memory has since gone, but I believe I used 4227 and 4198 for propellant, with 52 grain Sierra Match Kings. I used to have a target that has been lost in time, in which I fired 10 shots into one ragged hole at 100 yards. Yes, these "space guns"
will shoot.