Yep. The "stainless" steel that's used to make gun barrel (usually 416R but sometimes 410), is NOT the same alloy as the stainless steel in your silverware drawer. While the stainless your spoons are made out of is extremely corrosion resistant, you may have noticed that the SS isn't very hard and bends easily. Gun barrels aren't made out of this alloy, for obvious reasons. 416 SS is hard enough and strong enough to handle the repetitive pressures and stresses of a firearm, but it not nearly as corrosion resistant. Far more so than blued chrome-moly steel, but prolonged exposure to moisture and/or corrosives for any length of time and it can and will rust and pit.

Better to clean it thouroughly after every days use than to have it rust and pit and regret it later.

Mike