Anyone using IMI Trail Boss?
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All handloading data posted on Full-Bore UK from 23/2/2021 must reference the published pressure tested data it was sourced from, posts without such verification will be removed.
Any existing data without such a reference should be treated as suspect and not used.
Use reloading information posted here at your own risk. This forum (http://www.full-bore.co.uk) is not responsible for any property damage or personal injury as a consequence of using reloading data posted here, the information is individual members findings and observations only. Always verify the load data and be absolutely sure your firearm can handle the load, especially older ones. If in doubt start low and work your way up.
Anyone using IMI Trail Boss?
I am starting reloading and I am thinking of using Trail boss powder for loading .45 Colt (SAA pistol) and was wondering if anyone has any experience with it?
Looks good for filling up the .45 colt case and preventing overcharging and quite a lot of the cowboy shooters in the US seem to be recommending it so I thought it might be a good powder to try first?
Looks good for filling up the .45 colt case and preventing overcharging and quite a lot of the cowboy shooters in the US seem to be recommending it so I thought it might be a good powder to try first?
- Mike357
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Re: Anyone using IMI Trail Boss?
I know a bloke that uses TB in 45 LC. Uses it for Gallery Rifle. Seems to work well for him.
It's not the pace of life that concerns me, it's the sudden stop at the end!
Re: Anyone using IMI Trail Boss?
Not seen the tinstar will look it up.
The velocities on the TB look very low compared to other powders, how would this affect accuracy?
Also it says it is designed for shooting lead bullets with cowboy action loads does this mean you shouldn't use it with copper plated bullets? My lee book with load data seems to have very little data with regards to copper plated/jacket rounds and only lists two powders to use with them and not sure why.
The velocities on the TB look very low compared to other powders, how would this affect accuracy?
Also it says it is designed for shooting lead bullets with cowboy action loads does this mean you shouldn't use it with copper plated bullets? My lee book with load data seems to have very little data with regards to copper plated/jacket rounds and only lists two powders to use with them and not sure why.
Re: Anyone using IMI Trail Boss?
Hi,
I use it in a .45LC Marlin cowboy competition.
Velocity is low, but accuracy is very impressive at least in 25yd gallery range with virtually no recoil allowing for very fast shots to be taken. Be aware though, the tub is only 9oz, not 1lb.
I use it in a .45LC Marlin cowboy competition.
Velocity is low, but accuracy is very impressive at least in 25yd gallery range with virtually no recoil allowing for very fast shots to be taken. Be aware though, the tub is only 9oz, not 1lb.
Re: Anyone using IMI Trail Boss?
Yea I did notice it comes in 9oz but if I have done my sums correct then it only works out at about £1 extra per 100 shots compared to titegroup.Ballistol wrote:Hi,
I use it in a .45LC Marlin cowboy competition.
Velocity is low, but accuracy is very impressive at least in 25yd gallery range with virtually no recoil allowing for very fast shots to be taken. Be aware though, the tub is only 9oz, not 1lb.
How do you find it compared to other powders you have used? Does it burn quite clean? Are you using cast lead bullets?
- Individual
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Re: Anyone using IMI Trail Boss?
I like it.hakeswill wrote: How do you find it compared to other powders you have used? Does it burn quite clean? Are you using cast lead bullets?
I'd say it burns just as well as anything else I've ever used.
You should only use it with lead bullets, it doesn't really have enough kapow for jacketed - ask me how I know

Re: Anyone using IMI Trail Boss?
Ok im interested what happened with the jacketed bulletIndividual wrote:I like it.hakeswill wrote: How do you find it compared to other powders you have used? Does it burn quite clean? Are you using cast lead bullets?
I'd say it burns just as well as anything else I've ever used.
You should only use it with lead bullets, it doesn't really have enough kapow for jacketed - ask me how I know

Is titegroup ok to use the jacketed bullets?
Re: Anyone using IMI Trail Boss?
trailboss mark seating depth of the bullet your using on the outside of the case, fill case to this line thats your 100% load, weigh and 70% of this is your starting load work up your load as normal........
greenshoots
greenshoots
Re: Anyone using IMI Trail Boss?
Meters pretty well, certainly notice the powder in the case, couldn't really double charge and burns cleanly.hakeswill wrote:Yea I did notice it comes in 9oz but if I have done my sums correct then it only works out at about £1 extra per 100 shots compared to titegroup.Ballistol wrote:Hi,
I use it in a .45LC Marlin cowboy competition.
Velocity is low, but accuracy is very impressive at least in 25yd gallery range with virtually no recoil allowing for very fast shots to be taken. Be aware though, the tub is only 9oz, not 1lb.
How do you find it compared to other powders you have used? Does it burn quite clean? Are you using cast lead bullets?
I was using 250g lead RNFP, made by ACE bullets.
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