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 New 54 cal GPR

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jambuster



Number of posts : 6
Age : 63
Location : Memphis Area
Registration date : 2017-11-20

New 54 cal GPR Empty
PostSubject: New 54 cal GPR   New 54 cal GPR Empty2017-11-27, 09:27

Well i just got one about 2 weeks ago and was interested to know what ball diameter and patch thickness you GPR shooters think is the way to go. I have looked through this forum and it seems like .530" balls with .015" patches are the most common arrangement . When I ordered the gun the guy told me .535 balls and and the only patches I could find was .015" . I would just like to know what your experiences have been.
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Smokin' Joe
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Smokin' Joe

Male Number of posts : 2075
Age : 69
Location : Elk River, MN
Registration date : 2011-11-23

New 54 cal GPR Empty
PostSubject: Re: New 54 cal GPR   New 54 cal GPR Empty2017-11-27, 09:43

Congrats on your muzzy.  The .015 patches are pretty common.  Muzzleloader barrels can be different sizes even with the same brand so .535 ball might be good as the seller mentioned. It won't take long to see what works best.  I believe October Country has a variety of patches thicknesses.  I don't recommend, however, going thinner than .015 if possible and I don't think you'll have to.

Good Luck with your your .54 cal.

_________________
Joe

Semper Fi……..
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jambuster



Number of posts : 6
Age : 63
Location : Memphis Area
Registration date : 2017-11-20

New 54 cal GPR Empty
PostSubject: Re: New 54 cal GPR   New 54 cal GPR Empty2017-11-27, 10:21

And as long as I'm at it what do you guys think about powder 2F or 3F.
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FrontierGander
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FrontierGander

Male Number of posts : 16345
Age : 35
Location : Boncarbo,Colorado
Registration date : 2008-05-19

New 54 cal GPR Empty
PostSubject: Re: New 54 cal GPR   New 54 cal GPR Empty2017-11-27, 10:38

530 with an 018 patch. 80 to 110gr 2fg.
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Smokin' Joe
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Smokin' Joe

Male Number of posts : 2075
Age : 69
Location : Elk River, MN
Registration date : 2011-11-23

New 54 cal GPR Empty
PostSubject: Re: New 54 cal GPR   New 54 cal GPR Empty2017-11-27, 10:39

Well....IMO, I think it's good, reliable, plenty of power and easy to clean up.  In fairness I've only shot 2F in my .54 & .58 side locks and that's mostly flintlocks.  I have not shot the other substitutes, didn't need to.  There are many of the forum members that have shot a variety of powders and I expect they'll share their thoughts on them.

_________________
Joe

Semper Fi……..
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MattRaymond



Number of posts : 123
Age : 47
Location : Connecticut
Registration date : 2015-10-28

New 54 cal GPR Empty
PostSubject: Re: New 54 cal GPR   New 54 cal GPR Empty2017-11-28, 09:12

I shoot .535's with a .018 pillow ticking patch. Accurate...and fairly easy to load.
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singletree45

singletree45

Number of posts : 18
Age : 76
Location : Northern Missouri
Registration date : 2015-01-01

New 54 cal GPR Empty
PostSubject: Re: New 54 cal GPR   New 54 cal GPR Empty2017-12-31, 10:25

My load is .535 with about .012 patches and 50 gn. of 3fg Goex powder. It does shoot pretty well.New 54 cal GPR Pistol10
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OldMtnMan

OldMtnMan

Male Number of posts : 10418
Age : 76
Location : Buena Vista, Colorado
Registration date : 2010-09-23

New 54 cal GPR Empty
PostSubject: Re: New 54 cal GPR   New 54 cal GPR Empty2017-12-31, 10:34

I like 3F in Lyman sidelocks. It has a really small breech channel and 3F gets into it more reliably.

_________________
Pete

I'm addicted to black powder.
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jambuster



Number of posts : 6
Age : 63
Location : Memphis Area
Registration date : 2017-11-20

New 54 cal GPR Empty
PostSubject: Re: New 54 cal GPR   New 54 cal GPR Empty2017-12-31, 17:23

Good Shootin!
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hunting savage



Number of posts : 170
Age : 72
Location : southern Mi
Registration date : 2014-05-03

New 54 cal GPR Empty
PostSubject: Re: New 54 cal GPR   New 54 cal GPR Empty2018-01-04, 11:43

I LIKE THAT GROUP
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singletree45

singletree45

Number of posts : 18
Age : 76
Location : Northern Missouri
Registration date : 2015-01-01

New 54 cal GPR Empty
PostSubject: Re: New 54 cal GPR   New 54 cal GPR Empty2018-01-04, 20:19

That was the first group that I shoot with this pistol. I was happy with the group, but not the recoil. I tried a reduction in powder to reduce the recoil, but it also reduced the accuracy so I went back to the original load. I shoot this into the end of a hickory log and recovered the slugs. They penetrated a little over an inch. Two were fattened  and three were one large chunk of lead. Waiting for spring to shoot it from the bench.
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New 54 cal GPR
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