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post #1 of 10 (permalink) Old 09-09-2016, 08:26 PM Thread Starter
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.58 cal loads

My custom flintlock build arrived the other week and I got it down to the range last weekend to fire it. Its a .58 caliber and I was using 80 grains of 3f GOEX with either a .01 red pillow ticking or .018 blue pillow ticking patch. I still don't have my load dialed in yet but I was wondering what different loads other members with a .58 cal use?
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post #2 of 10 (permalink) Old 09-09-2016, 10:14 PM
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Re: .58 cal loads

Have a TC Big Boar.It likes a .570 RB,.020 blue stripe pillow,and 120grs of FFg.Gives 3/4" groups at 50yds.
This is a high sweet spot and know is has a low sweet spot somewhere around 65grs but I haven't done range work to find it.It's on my "To Do" list this winter.

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post #3 of 10 (permalink) Old 09-11-2016, 04:35 PM
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Re: .58 cal loads

I'm in the same boat. Just started getting my new .58 figured out.

Have a 32" 1 in 70 twist bbl and have had the best groups so far w a 275gr Hornady swaged round ball, 85gr of Swiss 2F with a felt wad and .18 pillow ticking patch.
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post #4 of 10 (permalink) Old 09-12-2016, 06:22 PM Thread Starter
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Re: .58 cal loads

I'm interested to hear why you addedthe added the felt wad. Don't you want the patched ball snug against the powder?
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post #5 of 10 (permalink) Old 09-18-2016, 03:02 PM
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Re: .58 cal loads

It seems to help with accuracy of the load, nice perfect burn all around the circumference of the wad (great seal). Buddy recommended it when we were getting loads dialed in, rifle shot better with the wad vs without.
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post #6 of 10 (permalink) Old 09-18-2016, 03:44 PM
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Re: .58 cal loads

I also use a felt wad under a lee real bullet in my 58 investarms. Seems to help with accuracy,don't ask me why it just does.I also use a tight fitting card wad over the lee real bullet because it seems a little loose down there next to the powder, this keeps the bullet in place tight against the charge. Don't need it if you are shooting off the bench,just for hunting.
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post #7 of 10 (permalink) Old 09-18-2016, 03:55 PM
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Re: .58 cal loads

Felt wads are a gas seal preventing blowby.Often I hear of people using them with RB's.They wouldn't need them with a thicker patch.

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post #8 of 10 (permalink) Old 09-18-2016, 06:21 PM
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Re: .58 cal loads

Makes sense, my friend (who's been a flintlock guy for 40+yrs) recommended it when we started developing a load. So I guess I paid enough attention of his explanation! thanks for clarifying, J
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post #9 of 10 (permalink) Old 09-19-2016, 03:14 PM
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Re: .58 cal loads

.580 caliber minie ball over 60 grains FFG. Bore butter in the minie ball cavity. This is out of an 1863/64 Springfield.
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post #10 of 10 (permalink) Old 09-19-2016, 07:23 PM
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Re: .58 cal loads

A wad under a patched round ball does nothing to seal the bore. It is a simple matter of geometry. A bore size wad will be approximately 1/3 too small to seal the bore. The seal the bore, a wad would have to reach all around 1/2 the area of the ball. From where the ball meets the bore on one side to where the ball meets the bore on the other is pi x d divided by 2. so for a .490 ball, the wad would need to cover .769 inches round. a bore size wad, of .5 is .269 inches too small to seal the bore when pushed up against the ball by the force of ignition.


I have had several 58 caliber guns and to an extent the loads were much the same and to an extent they needed to be different to account for the different rifling. My smooth bore, shot well with 80 grains of 2fg and a .570 round ball and a heavy patch. .0025. My 58 half stock did well with 80 grains and a the same ball and a slightly thinner patch. In my Italian reproduction Zouave with only three grooves and progressive rifling, It did best with a .575 ball and a thin muslin patch of .005. I used 75 to 80 grains for all my 54 and 58 cal guns.
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