There is nothing wrong with a 1 1/2" group at 100 yards.Have you tried it at 200 or 300 yards?I had a Browning FN High Power that shot better at 2and 3 hundred yards than it did at 100 yards.

Its all right to be white!!
Stupidity left unattended will run rampant
Don't argue with stupid people, They will drag you down to their level and then win by experience