Looking for 12ga 2.75” fiber bismuth data

[Johnrussell]

I’ve been testing the Lyman bismuth gold medal hull fiber load but lowered the shot charge to 1 1/8oz from 1 1/4oz and lowered the powder charge until I hit 1300fps. I also had to change the wads to get the stack height correct.If I lower the longshot charge even half a grain further it seems to drop the velocity by over 200fps! Pretty wild. I’m going to have to send this load in for pressure testing as I had to substitute the primer with a cheddite primer as that’s all that’s available now a days. I expect it will be safe but you never now until you test it.