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Adjusting The Great Plains Rifle Finally


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#1 cayugad

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Posted 08 October 2012 - 01:50 PM

Today I was going to make final adjustments to the Lyman Great Plains Rifle. I knew it was shooting to the left. Now with the much cooler weather I wanted to check it one more time, make any adjustments and get it sighted in for 30 yards or so, in case I decide I want to hunt with it.

So out in the yard I went. And set up at new target at 30 yards.. range finder verified. Then just like that, my mind went black. I could not remember what load this rifle liked. But I remember reading someone saying 95 grains of 3f black powder and they got outstanding accuracy. So I figured.. what the heck. I have Schuetzen 3f black powder, some olive oil as lube for the pillow tick patch, and plenty of home cast .495 roundball.. lets see what 95 grains does at 30 yards. Also I have never used olive oil in this rifle. I had also brought out some home made lube I made up Sunday I wanted to try...

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Well 95 grains of 3f powder and olive oil is not the ticket. It was blowing my patches apart. And I mean, shredding them. So I had some .510 Circle Fly wads in the box.

I then lowered the powder charge to 70 grains of powder and no wad and figured I would try them. And for a better aiming point, I held level under that green square with the front sight.

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4-6 were far to the left of the square and not really in a good group. So I was in kind of a quandary. I went in the house and looked at what this rifle liked, in my file. It read 80 grains of 2f black powder. So back to the range I went with my 2f black powder.

This time aiming at the green square again, I shot 7-10 and while still to the left.. the group was much better. But I figured.. it is time to adjust this rear sight and drift it to the right.

Back to the big red bull and I must point out a mistake in labeling.. I was shooting 80 grains of 2f for 11-14

Shot 11 was to the left.. just to check how much drift. #12 I adjusted and discovered too much adjustment. So I set it back just a little and made 13 &14 and that was pretty good.

I should point out.. it was NECESSARY for me to swab the barrel between shots. I could not believe how hard it was to load this rifle today. Whether it is the cold weather, the humidity, the junior lube, or what... But loading a second shot .. well if the ramrod was not stainless steel and I could not force that ball down the barrel, I would have been in trouble. But the load was 80 grains of Schuetzen 2f not 3f, a .510 circle fly wad, junior lube and patched pillow tick, and of course my home cast roundball in .495.

Anyway I saw that turkey and just had to try for the head. But first, I made just a very very small adjustment to the right. So small in fact, I was not even sure I had made it. I then took a bead on that turkey's head..


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And fired two shots.. swabbing between shots of course. The to see what happens if I did not swab.. I loaded again, and either I flinched or what.. but blew that one out of the park.

I was going to shoot more, but they delivered a dumpster to my house for an upcoming construction project so I felt I better stop or I might scare away the dumpster.
"Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways, a total wreck with a big smile on your face."

#2 PA RIDGE RUNNER

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Posted 08 October 2012 - 08:15 PM

Glad to see you got it dialed in. I usually sit at the bench and try to remember which way to move the sight. This comes from many years of shooting a bow where you move the front sight.
If God had a refrigerator would your picture be on it.
Remember the Ark was built by amateurs, the titanic by professionals.

#3 cayugad

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Posted 09 October 2012 - 08:32 AM

I will admit something.. I am going to have to shorten my open sight shooting range I believe. I have a hard time getting true focus of the rear, front sight, and then the target. They start to focus in and out when the distance is long. Its kind of frustrating. Although I am going to see if a LARGER target helps this thing adjust better. I used to say 100 yards and no further. Now I am lowering that to 75 yards unless its a massive buck and I have buck fever.. just kidding. I think I am going to lower my levels. I'd rather let them walk away healthy then run off wounded.
"Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways, a total wreck with a big smile on your face."

#4 PA RIDGE RUNNER

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Posted 09 October 2012 - 12:06 PM

Know your plight. Before I had cataract surgery I was very near sighted with rifle sights always clear but the target unseeable without glasses. Now after surgical lens implants I am far sighted and the target is clear but the sights are not. I did find that going to a peep sight helps with that. Of course you would have to lay out a bit of change to convert your whole fleet to that.
If God had a refrigerator would your picture be on it.
Remember the Ark was built by amateurs, the titanic by professionals.

#5 cayugad

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Posted 10 October 2012 - 09:11 PM

I do not like peep sights. And your right, if I had to change them over to peep sight... Wow!! Someday I will list all my rifles... when I have lots of time to type. :tsk:
"Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways, a total wreck with a big smile on your face."

#6 PA RIDGE RUNNER

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Posted 11 October 2012 - 05:42 AM

Cayugad I fear that you may get carpal tunal from typing all that info. I now take a moment to pause and say thank you for doing such a great job of sharing your experiences with us all. As spirit hawk once said, it would be great for the three of us to get together and share a campfire. I do not get to Wis as I do not have chains for my pickup.
If God had a refrigerator would your picture be on it.
Remember the Ark was built by amateurs, the titanic by professionals.




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