Lyman gpr 50 cal

[Rigderunner]

I just recently bought a Lyman Great Plains rifle in 50 cal and I was wondering How much powder do y’all run with patched round ball?
I have a Lyman Great Plains rifle in 54 cal that I’ve had for years I normally shoot maxiballs in it.

 

[SciAggie]

Mine likes 90 grains of 2F.

 

[Stykbow]

I’m shooting 80 grains of Pyrodex RS out of mine. Haven’t really worked on loads at all. I started with 80 and the rifle liked it. Might try a different charge over the summer to see if it improves accuracy. It already shoots 1 1/2 or 2” groups at 50 yards, but you never know what 5 or 10 grains more or less will do.

 

[Tasbay]

Mine liked 60grains powder and ticking patch & .495 ball, any higher and the patch shredded. Have just started to use a ticking patch and a layer of cotton bed sheet on top so 2 layers of patch and got a 5 shot ragged hole at 50mts with 90 grains of powder, no shredding or burning.

 

[Grenadier1758]

I just recently bought a Lyman Great Plains rifle in 50 cal and I was wondering How much powder do y’all run with patched round ball?
I have a Lyman Great Plains rifle in 54 cal that I’ve had for years I normally shoot maxiballs in it.

Is your rifle new or previously used? The Lyman rifles by Investarms were known to have very sharp lands that in a new rifle would cut the patches. These rifles needed to be shot about 200 times or subjected to a bore honing procedure. Most will use a subcaliber jag and a piece of green Scotchbrite to apply about 200 passes up and down the bore to hone the barrel. Once the barrel is honed, then standard load development can proceed. Since different powders have different energy and performance, my suggestion would only be a guess suitable to flinging a ball downrange and perhaps approaching the desired impact on a target. My guess would be 65 to 80 grains of 2fg Schuetzen pushing out a 0.490" ball wrapped in 0.018" thick cotton drill damply lubricated by a mix of water soluble oil and water.

 

[Rigderunner]

to be honest I’m not sure how much or if it has been shot. I bought it on an auction and will be picking it up tomorrow evening or Saturday morning.

 

[fishmusic]

Make sure to check if it is loaded.

 

[skwerleater]

I use 75 grains fffg. Good flat and accurate.

 

[bang]

If you scrub the barrel use steel wool. Scotch Brite and lapping compounds will remove the finish.

 

[hanshi]

For the "hunting" load in my .50 anywhere from 60 to 70 grains works ot to 100 yards. For a target and plinking load 30 grains does the trick at squirrel distances.

 

[Rock Home Isle]

If I’m punching paper at the range, it’ll be the most accurate load between 50 & 65 grains.

If I’m hunting, it’ll be the most accurate load between 90 and 105 grains

 

[roundballman]

I use 80 hrs 2fg and a 490 ball with 015 pillow ticking