The same situation exists for all old shotguns with with 2-1/2" chambers, but doesn't put people off them. There are about as many shells available commercially for 2-7/8" 10's as 2-1/2" 12's (meaning around none). Reload and enjoy, if the gun is safe. I have 5 or 6 and they are some of the most enjoyable guns I shoot. Not really that much more effective than a 12 with low pressure loads, but fun.