Trail Boss C.O.L. Question on .45 Colt

[ezypikns]

I pulled up data from IMR on the internet for Trail Boss in .45 Colt. The C.O.L. given is 1.650. If I seat my cast 250 gr LRNFP at that depth, I,m barely into the cannelure of the bullet. Not much to crimp into.
I usually use 5 grns of American Select with an overall length of 1.580. This seats the bullet nicely and the crimp almost hides the cannelure of the bullet. I realize there'll be more Trail boss for the same weight of powder volumewise, after all, that's why I'm using it (to fill up that big brass case). Do I have anything to be concerned about? By the way, I'll be shooting these out of a S&W Model 25.

 

[quiknot]

trailboss and 200 RNFT

a buddy of mine using 5.5gr and 200 gr bullet and seats his to the crimped mark on the bullet with Lee turret and factory crimp...does not fill up brass but puts more in then my 6.0 gr of Titlegroup....not sure if this helps or what you really wanted to know....

 

[Jim Watson]

Are you loading at the maximum?
If not, seat to crimp in the groove, revolver OALs are pretty bogus.