Still cleaning out and sorting all the stuff from a lifetime of shooting and reloading that I opurchased some months ago and I find a set of Savage "Four-Tenner" inserts - slide them in the barrels of an O/U or SXS and you have a 410 bore from your 12 ga. Now, for the big question - anyone have any idea of what these things might be worth?????

I have seen them on ebay a time or two and they sold for $150 plus.