@Dirty_Dave95 - I don't have load data for 100 since most of my development was with 120 grains- mostly Nosler Partitions and Speer Grand Slams- but with 120s, using 7828 I could get 3500. Pushed to 3600 it was clearly into high pressure, so for general use I backed it down to 3400. At 3400 I got good case life- at least five loadings. At the time I was writing articles for a couple magazines- the editor refused to print my review- claiming that it would expose the magazine to lawsuits.
Just to see what would happen I loaded up a Hornady 60 gr flat nose bullet designed for the 25-20. I set a target at 100 yards, a chronograph at 15. I fired one shot- all I saw was a grey cloud at about 50 yards- the chronograph read 4505fps. I dismantled the remaining 60 grainers. I don't know what the pressure was however there were no signs of high pressure with the case or the extraction.
Shooters have long known that for some unknown reasons, some barrels are able to shoot bullets to higher velocities than others- appears I may have one of those barrels.
