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Thread: 50 x 140 C.Sharps

  1. #1
    GunLoad Trainee
    Join Date
    Mar 2009

    Default 50 x 140 C.Sharps

    Tale of the C. Sharps

    In about 1994 I ordered a C. Sharps pattern Sharps Model 1874 from C. Sharps in Montana. I ordered the gun in 50 X 140 Caliber because bigger is better . When I ordered the gun I ordered it with the 34 heavy barrel and I ordered the full length 4 power scope. I also ordered Eladorado (?) casings I have since ordered some Bell brass. I also ordered some 640 gr and 550 gr bullets. I decided to use black powder substitutes because of the mess involved in cleaning regular black powder. I have trimmed the brass to 3.25 inches. Some of the brass had a case head that was to thick so it had to be thinned to chamber correctly. I Loaded with the 640 bullets using 120 gr. Of American Pioneer powder. I found that at 50 yards the bullets were tumbling and hitting sideways. I Called C. Sharps and was told to switch to the 550 gr. Bullet. They sent me some 550 gr gas checked bullets which were better. I have been trying Buffalo bullets in 530 flat based bullets. They mick out at .512. I e-mailed C. Sharps and they assured me that the barrel is .512 and that I should set the bullet 1/16 inch from the rifling. I have loaded a number of cart. Using 100 gr of American Pioneer powder. I use an over powder card wad and felt wads to fill the casing. I have in the past tried Triple Seven powder and the results were all over the paper. I read about using smokeless powder and contacted Accurate Arms to get loads for there Accurate 5477 powder. I loaded several boxes with varying loads from the loads provided. The results were unimpressive. I did not use wads in the smokeless loads as per Accurate Arms. I am now at a loss as to were to next. Any thoughts would be appreciated.
    Emmett Favreau

  2. #2
    Gunload Grunt kg42's Avatar
    Join Date
    Nov 2005


    Hi Emmet

    Mike Venturino posts next door at , he should be able to help you.
    Simply copy and paste your post over there after registering.

    Good luck

  3. #3
    GunLoad Trainee
    Join Date
    Jan 2011


    Howdy. I to own a C. Sharps 50/140. Mine is an 1875 with a 34" heavy #1 barrel. Mine has a .510 groove dia. with a 1 in 24" twist. I to had the same problems trying to get it to shoot with short little bullets. Check the twist rate. Using the Greenhill formular, I found that with the relitively fast 1 in 24" twist, I needed a bullet that was at least 1.625" to 1.75" long in 50 caliber in order for it to stabilized and shoot accurately. I designed a bore riding semi spitzer 1.625" long and Fred Cornell made the nose pour mold for me. This bullet weighs in at 765 grains in a 1/20 mix to 795 grains depending on the mix. It has 4 large grease grooves and I seat it .875" into the case. I get 110 grains of FG powder with 1 milk carton and 1 plain card wad. I use a Federal magnum primer. This leaves the bore riding section seated in the bore. Velocity is approximately 1300 - 1350 fps. On a good day if I'm not flinching too bad, I can manage 1.5" 5 shot groups. This is a good load out to 1000 yards. The only drawback is the recoil. Lots, is all I can say!

  4. #4
    another avid hunter
    Join Date
    Dec 2010
    Kelowna, BC

    Default 50-140

    Likewise have a C. Sharps 50-140 model 1875 - 34 in bbl. Purchased mine from them in 2005 I believe. Have shot nothing but paper patch in mine. It is 1-26 twist but I could be wrong----

    The lightest I have shot is 450 grain and the heaviest is about 620 grain -- all very accurate, with the easiest to get tight groups with being the heavier bullets. Have used a lot of true BP - Goex. Also found Accurate 3100 works very well -- got their data from them. Upon request in an email they gave me data for the heavier bullets. Actually with the 3100 powder it's a very powerful hunting weapon, roughly 10% more muzzle energy than a 458WM.

    Even the 450 grain are capable of about 3 inch groups at 200 yards with 3100 powder.

    Make sure you don't leave space in the BP loads and if you use the 3100 work carefully up -- If you can't find their data I'll see if I can find the web site listing. They changed it lately when I last looked----good hunting and shooting....Bob.

  5. #5
    Join Date
    Oct 2010
    Harrison Michigan


    I got my Sharps Shilo in 1985 I ordered it throated for Paper patch the rifling is 1-36" .
    I loaded FG powder though a 36" drop tube and have put up to 150grs. under the bullet with paper patch I loaded a cardboard wad over powder then a .2" grease cookie then patched bullet The only load gave me trouble was with 700gr bullet while 100yd group was 3 inches bullets were key holing. THAT MOLD is a Lyman adjustable It will throw a bullet from about 440-712 grs.
    For hunting I use a 50-70 bullet of about 450grs. this bullet shoots good with either black powder or smokeless I use SR-4759 out of Lyman book and get 1725f/s.
    Emmet if you are still out there how did those Bullets I sent you work out My server dumped my emails and I lost your email address?

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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
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