Trail Boss Load Calculation

Other sources of published loading data.

Re: Trail Boss Load Calculation

Postby Ranch Dog » 13 Sep 2015 06

Chickenthief wrote:How do you do energy per unit in the US?
As BTU or footpounds/unit maybe calories?
Not trying to be a smart * but i just realised as i wrote this that i didnt know how to do it correctly!

Heat energy is expressed as BTUs but the powder guys might be using something else specific the that industry.
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Re: Trail Boss Load Calculation

Postby 62chevy » 13 Sep 2015 09

Ranch Dog wrote:
Chickenthief wrote:How do you do energy per unit in the US?
As BTU or footpounds/unit maybe calories?
Not trying to be a smart * but i just realised as i wrote this that i didnt know how to do it correctly!

Heat energy is expressed as BTUs but the powder guys might be using something else specific the that industry.



The only thing I've seen is PSI and CUPS for powder in a cartridge but don't think that is the same thing. I don't think BTU is useful for our purpose.
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Re: Trail Boss Load Calculation

Postby horseman » 14 Apr 2016 10

Ranch Dog wrote:Trail Boss is talked about a lot here but I don't think I've ever seen the IMR load calculation instructions mentioned.

IMR Trail Boss® Reduced Loads for Rifle and Pistol



WARNING: Long winded Post here.....

Resurrecting the past here but I would like to add my interest/experience with Trail Boss powder for any that are interested in using it. First off, it's the most "funnest powder" :lol: I've EVER used in the applications I use it in. Just like the advertisement says, it's for low recoil, low-er velocity, (for the most part) loads for handgun and rifle. I've been using it pretty much since it first arrived and I use it mostly in 45 colt, 44 mag, and 357 mag. I have loaded some 405gr. cast over 16gr of TB in 45-70 and they are a "hoot to shoot"..The only loads I have ever run across a chrony was the 45 colt loads. Home cast 260gr RNFP over 6gr. of TB, average over a 12 shot string was 776fps. This is not a 100% load. IIRC with this bullet I can reach 7.5gr for 100% load density. (base of seated bullet) but what's the point in that as this is supposed to be a low recoil, fun "plinker". And it is. This load is almost like the western movies, pull that 45 colt and you can one hand it with ease. +guns .........it's not for "hunting loads" but I'd not hesitate to blast anything up to and including deer sized critters out to 50yds or so. A 260gr bullet at over 750fps is still a formidable force, besides not ALL loads have to be loaded to stop "charging grizzly bears" :shock: It meters well through the measure, is clean burning and accurate. I've loaded and shot a truck load of 45 colt using 8.5gr Unique, 9 to 10gr Herco, and 2400 from 16 to 18.5gr using that same bullet mentioned above. I've loaded barn burnin' H110 loads with up to 325gr. bullets in my Rugers for, well, I guess just "because"...(those are not much fun) but if I want to just go have fun shootin' cans, stumps, or whatever, Trail Boss is the powder and I load a lot more of these anymore cause' that's what I go shootin' for.

A little story, I took a box of 50 over to a Pard's house a while back just to go shootin'. When I showed up he asked if "those are some of those hand wrenchers ya' brought last time".. Told him nope, try a couple and tell me what ya' think. Loaded up his Ruger and very cautiously (two handed by the way) touched off the first round. A surprised look :o and then a big smile. He was still smilin' after the 50 were gone. Told me to bring him more of those... :lol: This fella' is a pretty good sized Cowboy (Clint Walker look-a-like but only 6'3") has hands like Fred Flintstone and these TB loads were "just right" for him, so, leave yer' measurin' tape in the truck boys, load some up and have some fun. :D
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