Trail Boss Load Calculation

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Trail Boss Load Calculation

Post by Ranch Dog »

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
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Re: Trail Boss Load Calculation

Post by 357cyrus »

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[REGISTERED SIGN] Reduced Loads for Rifle and Pistol
Thanks. I walked through my local reloading shop last night and thought about grabbing some from off the shelf. But figured I could put it off a little longer. Have you used it much in a 444? Ive been toying with the idea of using it to make subsonic loads for deer at archery distances. Might be a good one to start kids on?
On a side note... I slugged the bore on my 444 CVA optima Elite Stalker, (first thing ive ever slugged) and I believe it to be .428. They had a two cavity Lee mold in 429 240 swc with gas check on sale for $20 so I grabbed one and some gas checks. I hope to get that silver stream a flowing soon.
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Re: Trail Boss Load Calculation

Post by Ranch Dog »

I haven't used the Trail Boss in anything except the 357 Mag with my round ball loads but it supposed to deliver subsonic performance in anything at 100%.
357cyrus wrote:I slugged the bore on my 444 CVA optima Elite Stalker, (first thing ive ever slugged) and I believe it to be .428. They had a two cavity Lee mold in 429 240 swc with gas check on sale for $20 so I grabbed one and some gas checks. I hope to get that silver stream a flowing soon.
.428 is a bit tight for the 444 Marlin, The SAAMI groove is .430". Therein lies the difference between the 444 Marlin and 44 Mag, the 44 Mag's spec is a .429" Groove.
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Re: Trail Boss Load Calculation

Post by daboone »

I've loaded some 7.62x54R, 8x57 and 45/70. It was fun and didn't rip your arm off. The TB container are not 1lbs cans. Which makes it even more expensive when compared to other powders. I liked TB but haven't bought anymore.
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Re: Trail Boss Load Calculation

Post by Ranch Dog »

daboone wrote:I've loaded some 7.62x54R, 8x57 and 45/70. It was fun and didn't rip your arm off. The TB container are not 1lbs cans. Which makes it even more expensive when compared to other powders. I liked TB but haven't bought anymore.
That's a good point. They are 9 ounces but by volume there is a a lot more powder in the can, usually full to the rim, as compared to other powders so I kind of works out in the wash.
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Re: Trail Boss Load Calculation

Post by Fyodor »

Trailboss was designed for cowboy action shooting, and gives a light load with low recoil even when the case is full to the rim. I use 4.2gr of trailboss in my .38spl and got a load density close to 100%. The real big advantage of trailboss is that it's impossible to create double charges. The .38spl for example holds up to 4.8gr and would overflow on a double charge of a 2.4gr load. That makes this powder very safe to use when using very light loads.

I don't know prices in the US (and I guess I'll cry if I knew them), but her in Germany trailboss is about the same price as other powders by weight. I liked using it, but it can't be imported any more since 2013 and since April this year we're not even allowed to use up the stock we have.
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Re: Trail Boss Load Calculation

Post by 357cyrus »

Just thought id mention... I called Hodgdon yesterday and asked if there was any problem loading below 70% in a 444 Marlin to achieve a subsonic load. The technician said not unless you get so low that yr bullet wont make it out the barrel. I finally got some 240gr SWC cast and hopefully I'll give them a try in the next week.
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Re: Trail Boss Load Calculation

Post by Ranch Dog »

357cyrus wrote:Just thought id mention... I called Hodgdon yesterday and asked if there was any problem loading below 70% in a 444 Marlin to achieve a subsonic load. The technician said not unless you get so low that yr bullet wont make it out the barrel. I finally got some 240gr SWC cast and hopefully I'll give them a try in the next week.
That's funny! Thanks for checking and then posting!
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Re: Trail Boss Load Calculation

Post by Chickenthief »

Not only is Trailboss low density but it is low energy!

Most other powders are @ 3700joule/gram~178ftlbs/1grain and doublebase powders @ 4000joule/gram~193ftlbs/1grain.
Trailboss and Vv TinStar both are @ 3000joule/gram~144ftlbs/1grain.
In other words @3/4 the energy per weight unit compared to normal powders.


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!
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Re: Trail Boss Load Calculation

Post by 62chevy »

Chickenthief wrote:Not only is Trailboss low density but it is low energy!

Most other powders are @ 3700joule/gram~178ftlbs/1grain and doublebase powders @ 4000joule/gram~193ftlbs/1grain.
Trailboss and Vv TinStar both are @ 3000joule/gram~144ftlbs/1grain.
In other words @3/4 the energy per weight unit compared to normal powders.


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!

The real question is did the reader understand what you wrote, I did so you are good to go.
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