Lyman GP pistol range report

[jbarclay]

I got my new Lyman Great Plains 50 pistol today and had a great time. After cleaning and busting a few caps the first three rounds went into one ragged hole at 25 yards off a rest. The load was 40 grains of Elephant 3f powder and a Hornady .490 RB with a .015 CVA patch (780 FPS). After getting used to the trigger pull (really nice) I fired 5 rds off hand into 2 inches. I think this one is a keeper.

 

[jtmattison]

Sounds like you have a real shooter there.
I have one in .54 and I'm ashamed to say I've only had it out to shoot two or three times in a year and a half :redface:
I think I'll take it out this weekend.

HD

 

[mec]

With that quality of shooting it doesn't sound like you need any helpful hints but here's one anyway.
The Lyman lock has a fly and it is likely that you can achieve a hair trigger letoff if you want. With the gun carefully pointed down range, capture the hammer with you hand and apply pressure to the trigger until you feel the trigger ride up on the sear. On mine and some others I've heard about, this provides a light and consistent "set."

 

[sse]

Can you tell what lube you used, or are those pre-lubed patches?

Thanks, sse

 

[jbarclay]

I am using the precut CVA .015 pillow ticking patches lubed with "moose milk". The formula can be found on the web. I have shot a 30 rd match with my rifle using these patches without having to swab or clean until after the match.

 

[sse]

Thanks, you answered my next question. The reason I asked is my bro has a GPP and can't seem to get it to fire after 5-6 shots. He's fouling it up somehow.

Thanks, sse

 

[marwat06]

Yeah I have a Lyman and their are a great value. Enjoy your shooting. I use a little less powder .. 25 or 30 grains. Seems I get just as good accuracy than the higher loads and with much less recoil.

 

[Teach]

I took my .54 trade pistol out today for the first time. :grin: I tried 20 gr ff and a .15" patch.Best I could do was a 2" group at 25yds.
I think I'm snatching the trigger while trying to overcome the creep.I'm going to try your suggestion Mec.and or trying taking a little off of the tumbler or sear.

 

[flaming canvas]

Teach,

Start by taking some of the pressure off the sear by clipping the spring that holds it down. When it has just enough pressure to reliably engage the full cock notch you might look at changing the geometry on the sear.

 

[Teach]

Thanks flaming canvas,that's sounds like a better idea.I'll give it a try.

 

[mec]

Is the "trade" pistol a Lyman Plains Pistol? I know the lyman has a fly in the lockwork but can't say this for sure about any other pistol. The lyman lock has coil springs in place of the original flat leaf.

 

[Teach]

It's a Trade pistol, it has the coil spring instead of the V spring.
I took .030" off the sear spring and it lightened it up considerably.i would have taken it apart and removed more but it was a pita to put back together.
Thanks again for advice.
Cheers Teach.

 

[Teach]

Thanks again,I took off .030" from the sear spring,that lightened it up quite a bit. :thumbsup: I would have taken more off but found it quite a chore to replace the spring.