Ron, those 48's are real "hammers" !!!
They're also extremely accurate, at least I know the new ones are. I have one in .20 caliber and it's a fantastic rifle. If I was going to get one in .177 I'd shoot heavier pellets in it. The 48's are nice and short, which is nice for hunting. They are heavy, but very easy to install sling swivels on so the weight issue can be easily addressed.
Buying a refurb is of course a personal decision, but the 48 "platform" is a nice, hefty, solid, hard shooting platform.....
Jeff