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post #1 of 7 (permalink) Old 02-11-2012, 08:16 PM Thread Starter
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Using Trail Boss powder without load data

I'm looking into reloading some .45 Colt ammo. I got the Lyman 49th reloading handbook out of the library and found the load data for .45 colt. Sadly, they do not list any data for shooting roundballs. I emailed hodgdon asking for load data, but they said they had none. If I search online I see people giving data, but that seems a bit shady.

This document from IMR seems to say that the max load is always the max capacity with no compression. Is that only for rifle rounds though by the way they wrote it?
http://www.imrpowder.com/PDF/Trail-Boss-data.pdf

I found data for .45 colt here and the trend seems to be that the smaller bullets have more powder so that would make sense if the max load they are listing is simply a fully filled case with no compression.

Does anyone have any experience with Trail Boss as to if the max loads are always filling the case with no compression?
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post #2 of 7 (permalink) Old 02-11-2012, 08:36 PM
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Re: Using Trail Boss powder without load data

My Lyman 49 th manual has data. Look in the rifle section I believe.

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post #3 of 7 (permalink) Old 02-11-2012, 09:36 PM Thread Starter
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Re: Using Trail Boss powder without load data

The closest thing I can find in the Lyman manual is for bullet number 452460 which is a 200 gr. using 5.8 to 6.5 grains of Trail Boss with the max being at 13,000 C.U.P.

A round ball is lighter by 60 gr so I don't have any idea of how that might affect the pressures.
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post #4 of 7 (permalink) Old 02-12-2012, 01:09 AM
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Re: Using Trail Boss powder without load data

I think Speer manuals list data for a load like that............I recall something around 5.5 gr. of trail boss under a 141 gr. roundball?

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post #5 of 7 (permalink) Old 02-14-2012, 02:43 AM Thread Starter
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Re: Using Trail Boss powder without load data

Thank you. I'll have to see if my library can find a Speer manual. Do you know what edition you saw that in?
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post #6 of 7 (permalink) Old 02-14-2012, 04:10 AM
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Re: Using Trail Boss powder without load data

I believe I saw it in the 11th version, I would have to assume that it would be on 1 or 2 versions on each side of that.........

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post #7 of 7 (permalink) Old 03-01-2012, 05:24 PM
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Re: Using Trail Boss powder without load data

Hodgdon list:
160 GR. CAST LRNFP
IMR Trail Boss
Starting 7.0 grains 903 fps 8,100 PSI
Max 8.5 1018 fps 10,800 PSI

I'm sure that load would also work for a round ball of lighter weight.

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