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CTShooter

40 Cal.
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I recently finished a .50 GPR kit, haven’t made it to the range yet. Hoping to get out for this season.
 

Snake Pleskin

54 Cal.
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My Lyman .50 GPR I built from a kit over 20 yrs ago. I think it is a fine representation of the genre and have no intention of ever selling it. Orig. Lock works very well, browned the furniture, orig style sight, it works! I have a .50 Flinter I am building now!
 

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My son has a 50 caliber Investarms Lyman GPR with the fast twist barrel and he likes it. I currently have two Lyman GPRs-a Pedersoli 50 caliber flintlock and an Investarms 54 caliber percussion. Both started out as kits. I used the factory supplied parts for the 50 caliber flintlock and a maple fullstock, along with other assorted small parts, that I bought from TOW for the 54 caliber percussion. The fullstock build was quite a challenge for someone as clumsy as I am but I think it turned out pretty darn good. TOWs opinion of a rifle stock being pre-inletted and my thoughts on the subject were definitely quite different. Overall, I like the Pedersoli version of the GPR better than the Investarms. The Pedersoli has much more refined hardware (trigger guard, nose cap etc.) than the Investarms version. I am quite impressed with the overall quality of both and would not hesitate to recommend either one to anyone.
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Paul Nelson

Live Free or Die .54 cal
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Mine is an Investarms but same thing. I liked the factory sight but I decided to change it out for a more traditional one.
 

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W. PeeYaa
My 54 arrived with a very dark stock. Took some alcohol and rubbed some of the stain down to where ld see grain. Originally used 110g 3f w/ T/C maxis but have backed it down to 90g. As my eyed aged I added a Lyman peep and filed the front sight and added a 1.5mm fiber optic to the top. Shoots nice purdy groups w/ 430g of devastating lead.
 
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I bought my GPR brand new in July of 2003 from Midway USA for $311 shipped. It's a 50 caliber Hunter model with a 1:32 twist barrel, which works great with the lead conicals, but tends to shred patches using round ball. In August of 2003 I bought a 54 caliber barrel from Midsouth for $126 shipped. That one is a 1:66 twist, and shoots PRB like a tack driver.
I see many beautiful hand made, custom rifles pictured on this site that I really drool over, but my ol' out of the box GPR has been a pleasure to own, and has never failed me. I intend to pass it on to my grandson.
 

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Snake Pleskin

54 Cal.
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I bought my GPR brand new in July of 2003 from Midway USA for $311 shipped. It's a 50 caliber Hunter model with a 1:32 twist barrel, which works great with the lead conicals, but tends to shred patches using round ball. In August of 2003 I bought a 54 caliber barrel from Midsouth for $126 shipped. That one is a 1:66 twist, and shoots PRB like a tack driver.
I see many beautiful hand made, custom rifles pictured on this site that I really drool over, but my ol' out of the box GPR has been a pleasure to own, and has never failed me. I intend to pass it on to my grandson.
I have one I made from a kit, and I love it!
 
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So the new to me GPR came in today! It was a slow day on the job so I came home early and went shooting!! It seemed to like 60-70 grains of powder! But it was shredding patches! :-( The target show my groups at 25 yards off a rest. Groups opened up to about 5” diameter at 50 yards… hoping a little bore polishing will help with the patch situation..
So the factory sights aren’t as bad as I had feared. I will probably replace them thought since the rear sight has about a 1/16 wobble left to right! Unless some of you know a easy fix for this?
Aaron
 

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Joined
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Messages
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My son has a 50 caliber Investarms Lyman GPR with the fast twist barrel and he likes it. I currently have two Lyman GPRs-a Pedersoli 50 caliber flintlock and an Investarms 54 caliber percussion. Both started out as kits. I used the factory supplied parts for the 50 caliber flintlock and a maple fullstock, along with other assorted small parts, that I bought from TOW for the 54 caliber percussion. The fullstock build was quite a challenge for someone as clumsy as I am but I think it turned out pretty darn good. TOWs opinion of a rifle stock being pre-inletted and my thoughts on the subject were definitely quite different. Overall, I like the Pedersoli version of the GPR better than the Investarms. The Pedersoli has much more refined hardware (trigger guard, nose cap etc.) than the Investarms version. I am quite impressed with the overall quality of both and would not hesitate to recommend either one to anyone.
View attachment 164784 View attachment 164785
That flinter is one pretty rifle !!
 
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Living in the Past
So the new to me GPR came in today! It was a slow day on the job so I came home early and went shooting!! It seemed to like 60-70 grains of powder! But it was shredding patches! :-( The target show my groups at 25 yards off a rest. Groups opened up to about 5” diameter at 50 yards… hoping a little bore polishing will help with the patch situation..
So the factory sights aren’t as bad as I had feared. I will probably replace them thought since the rear sight has about a 1/16 wobble left to right! Unless some of you know a easy fix for this?
Aaron
Shoot the heck out of it. Takes about 100 shots to get it smoothed right out.
Walk
 

Leadriver

40 Cal
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Oct 11, 2021
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I bought a 50 cal GPR last month and have had exactly one range trip so far. Still looking for that magic load, but I had all kinds of fun just shooting it. Seems to be a solidly built rifle and I love its lines. It’s nice to be excited about hunting season again!
I shoot 80gr Goex 2F with .490 ball and pillow ticking patch. I get about 1.5 group at 50 yards which is plenty for me. I never tried to squeeze the accuracy out of it. Shots are usally less than 100 yards.
 
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Was able to get the new sights on the plains rifle yesterday and take it back out to the shooting pit! Also mid week rand a cleaning patch on jag with Braso on it up and down the barrel real slow with my electric drill. Hoping to smooth out any rought edges in the barrel. Had a thill bobber light ordered with my sights. Droped it down the barrel and didn’t see any roughness. Yet it was still shredding patches. It definitely was shooting more accurately at 50 yards though. Yet still only shooting probably about a 3-4 inch group off of rest.
It didn’t seem to affect accuracy whether I was using 60 or 70 grains of triple 7FFFG. .490 round ball with pillow ticking .018 patches.
Target is at 25y off bench. Had to drift my sights a little and file the front blade down.
Whoever browned the barrel on my gun remove the most of the manufacture information off the barrel. I think I can still make out a little bit of Invest arms though.
Any suggestions from you other great playing shooters?
 

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