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Extreme Trajectory

Discussion in 'Blackpowder' started by Rafferty, Jul 9, 2008.

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  1. Rafferty

    Rafferty Member

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    Hi, just joined in and I have a question. I recently took a stainless steel 1851 Navy Colt (made in Italy stamped on barrel, no maker) that I haven't fired in around 25 years out to the range...don't remember what loads I used to use, but I was a lousy shot then. I'm really good now with modern handguns.

    Anyway, using 20 grains (smallest measure I have), I clustered all six together at 10 yards, but 5 inches high.

    I backed off to 15 yards and got the same group 10 inches high!

    At 20 yards, I was over the top of the target frame even aiming at the bottom, at least 15 inches.

    I read that Colts shoot high to print dead on at 75 yards, but that's insane trajectory that no sight change is gonna fix. I can't get more than 30 yards from the target in my back yard.

    Would reducing the charge flatten trajectory, or would it be the same, but slower?
     
  2. sundance44s

    sundance44s Member

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    Try going the other way with your loads , getting the ball out of the barrel faster , will help bring it back to earth . My pet Navy load is 25 grs of 3f goex ...no wad .
     
  3. sharps59

    sharps59 Member

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    I'm w/ sundace.
    beleave sights were set for 50 yrds. mine is reset for 25 yrds w/ 18.5 grn of 3fffg. and w/ 25gr for 50yrds. with no change in hold these loads give me the best group.:banghead:
     
  4. Pulp

    Pulp Member

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    You can also take a triangular file and deepen the rear notch a mite. But go slow. You can't put the metal back.
     
  5. Rafferty

    Rafferty Member

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    OK, guys, thanks. The navy probably maxes out at 30 grains with 3F Goex? So I'll load 25, then if I dont' get close to POA at 10 yards, I'll go to 30 grains. That makes sense--faster bullets have flatter trajectory. I always thought that 20 grains was max for a .36 navy.

    I'll file the hammer as last resort.

    I've wondered how people get measured loads 22, 23, etc grains. I've only seen powder measures that throw measurements in 5-grain increments.
     
  6. Rafferty

    Rafferty Member

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    Hey, Sharps,

    How did you reset your sight?
     
  7. sundance44s

    sundance44s Member

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