That's a good deal for a 20. The weak spot is, I have seen many Ithaca Flues and Nitros with a piece of the wood broken off up by where it meets the receiver by the upper tang. It is usually caused by #1.... stock bolt not being kept tight. The wood on old guns shrinks and tang screws and stock bolts can get loose.
I believe the Nitro has a through bolt in the stock. Remove the butt plate or pad and use a big screw driver to FIRMLY snug it up. If it has a rubber pad put a little gun oil around the screw holes to keep from buggering the rubber.
#2...the wood gets broken off because of imperfect mating of the stock face to the receiver. I always Acraglass the stock face of older guns to get a perfect mating so that all the wood bearing surface is taking recoil force. It's easy to do. Just order some Acraglass Gel kit from Brownells and do it for peace of mind. After applying the glass, carefully put the stock back on and tighten down. Don't forget to apply the release agent to any metal that may make contact with the glass.
If it's your first double, DON'T slam it shut. To close the gun some grab the bottom of the stock and raise to close the gun.
Last edited by 2holer; 12/04/12 05:42 PM.