TargetTalk

Given that has been a while since Trailboss powder has been discussed, has anyone used this powder in .38Spl for 148gr wadcutter loads?

If so, what powder charges used and velocities do you get?

The manufacturer's site seems to be directed solely to single action loads.

Playing with Trailboss for ISSF and Service.
ISSF 148g W/C 3.5g 775 fps
134g BNWC 3.5g 780 fps
134g BNWC 4.0g 800 fps

Service 140g SWC 5.0g 900 fps p/factor 126
max 140g SWC 5.3g 931 fps (max case capacity)

all in Win .38 Special case & Federal primer.