I haven't seen any factory stuff around. I think some ammo companys used to offer snake loads in 38/357 and 44special/44mag but I think they would be pretty shaky for bird hunting. I have tried the .22 shotshell loads for sparrows in my barn and they are pretty safe at 8-10 feet away. I would have better luck with a handfull of gravel. You might have to check your game laws if using a .44 mag with bird shot. In Sask. we are limited to a .22 rifle or shotgun.A .44mag is technically a rifle so there could be a problem on feathered game and the local "WoodChucks" might not see the situation the way ordinary gun-nutz do...
i've got some recepies for doing that in one of my old gun books- used a special shot capsule and 71/2 or smaller shot, and blue ox wonderwads- only good as a snake load, and very sort distance- also if i remember correctly they used a contender smoothbore , so really the only resemblance to a 44 mag was the brass




















































