At a recent benefit auction, I bought two bags of miscellaneous oddball ammo for a Buck a piece! In one of the bags was a 4 gauge proof round dated April 43 and I am curious as to what kind of "gun" used this round. Was it an engine starting thing or perhaps a chimney cleaning gun. Hard to believe that it had a sporting application in 1943. Also in the bags were an 8 guage round, a 16g pinfire, a 14 ga aluminum round, a 28g proof round, a handful of 28g slugs as well as a bunch of usable mdoern ammo. The other bag had a .460 NE round, a .416 Rigby, a slew of Kynoch and German made Euro calibers, a number of cartridges that look like .43 Spanish or mauser and small amount of real long .22 centerfire rounds but I forget what they are now and am to lazy to go get them. Still very curious about the 4g round though.