357 Magnum Trail Boss

[TheDragon]

I'm looking for some loads for 357 magnum using IMR Trail Boss. Has anybody on here used any of this powder? I've looked at several places online and can't find anything. Their website isn't much help either. The bullets i'm using are Missouri Bullet company 140 grain TCFP lead. I got the trail boss for something else and that didn't work out. Anyways I tried the whole fill the case and then take 70% of that and use that as a start. Is that still too much? any help would be appreciated!
The Dragon

 

[Springfield 1911]

I started a thread about the same thing not long ago. I think that Chuckdog has used it, you might want to ask him.

 

[Chuckdog]

Hodgdon Data Center list a few loads.

http://data.hodgdon.com/cartridge_load.asp

 

[Tomthumb]

You can call their customer service directly. I have gotten additional loading data for Trail Boss that way.

HODGDON POWDER, CALL US DIRECTLY 7:00am to 5:30pm Central Monday-Thursday : 913-362-9455

 

[Chuckdog]

I shoot .38 Special almost exclusively in my .357's. I'm sure there will be lots of load data for them using TB.

 

[Twitch2120]

just load to 38 spl levels. TB isnt really the ideal powder to use in a 357 case. light be better off getting some 38 spl cases and working it that way.

 

[snuffleupagus]

just enough crimp to stop any bullet jump

powder puff load for S&W 637 and up, I use them in my 686 3"

check for squib issues if used in long barrels, I have fired from 3" & less only.

Date

Case

Caliber

Bullet

Powder

Charge

Primer

OAL

3/25/2012

mixed

38spec

158 LSWC

Trail Boss

2.7

CCI 500

1.45