44,I have not. Each of my shotguns, an 870 and an 1100, are 2 3/4".
Maybe if enough of us ask Winchester, Remington or Federal for 20 pellet 2 3/4" #1B we can get one of them to make a run. The Federal was supposedly the best round since it had a plastic shot cup and granular filler. Winchester has granular filler but no shot cup. I believe Remington is the same.
I could not find ANY buckshot for civilians from Federal. Police only. Remington has one load, product code - 12B1. It is 2 3/4" 16 pellets of #1Buckshot. Winchester has 2 loads, one each 2 3/4" and 3". XB121 for the 2 3/4" 16 pellet load and XB1231 for the 3" 24 pellet load of #1Buck.
Pickins are gittin slim