That looks about average...
Just kidding, that's pretty good, but in general the pumps shoot a whole lot better than people give them credit for, I've never had one that wouldn't do 1.5" or better. How short did you cut down the barrel?
I just picked up a real old one the other day in 30-06, its got the old style action bar that attaches to the barrel. Must be early to mid 50's I think.