I have a pound of Winchester Super Handicap that I want to find a use for and save some of my more "familiar" powders. In one powder rate burn chart, it is rated #28. Trail Boss is rated at #27. I have no knowledge or experience with Handicap. I am looking for reasons why I can not start developing a load, using Trail Boss data, starting at low charges and working up. Not sure what I want to use the Handicap in at this point. Maybe cast loads in 7.7 Jap, 8MM Mauser, 30-06, 308 Win, maybe some pistol calibers, etc. I still need to determine which calibers that Trail Boss is a candidate for in the first place.
Anyone know why Handicap would behave significantly different than Trail Boss and should not be used in these cartridges? Anyone using Handicap in these rounds? Quickload does not list Handicap so the best possible match would Trail Boss, as a starter, to estimate pressures.
Any bear traps out there? Don't want to do something stupid.