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Normal Topic Bullets for a Whitworth bore, cartridge gun? (Read 56 times)
DoubleD
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Bullets for a Whitworth bore, cartridge gun?
Today at 9:12am
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I have a Westley Richard's patent 1871 rifle. It has a 500 No. 2 Express chamber.  It has a Whitworth rifled bore-8 flats, octagon.   

This is a cartridge gun, not a ML.

The  bore slugs .502 across the flats (minor diameter) and .527 across the corners (major diameter).

I have a round grease groove bullet mould for .527 bullets weighing 487grs in 20-1.

I am reluctant to shoot a .527 diameter bullet, even 20-1 lead down .502 minor diameter bore.

Does anyone have any experience or knowledge to share on shooting Whitworth bore cartridge guns?



  

Douglas, Ret.
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rgchristensen
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Re: Bullets for a Whitworth bore, cartridge gun?
Reply #1 - Today at 11:13am
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DoubleD wrote Today at 9:12am:
I have a Westley Richard's patent 1871 rifle. It has a 500 No. 2 Express chamber.  It has a Whitworth rifled bore-8 flats, octagon.  

This is a cartridge gun, not a ML.

The  bore slugs .502 across the flats (minor diameter) and .527 across the corners (major diameter).

I have a round grease groove bullet mould for .527 bullets weighing 487grs in 20-1.

I am reluctant to shoot a .527 diameter bullet, even 20-1 lead down .502 minor diameter bore.

Does anyone have any experience or knowledge to share on shooting Whitworth bore cartridge guns?




DD:

First, I’d suggest a lighter bullet, maybe even trying a round ball.  The pitch of the rifling will give some insights on the proper bullet weight.  Black Powder is well suited to these cartridges -- FFg will probably work fine.  This will give you similar velocity to a smokeless load, at about half the pressure.

Choose a bullet that will be a “nice” fit in a fired case -- that will be the best size.  Put a stiff card between the powder and the bullet.

CHRIS
  
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oneatatime
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Re: Bullets for a Whitworth bore, cartridge gun?
Reply #2 - Today at 11:20am
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Why not try a 50-70 bullet (.512ish) at 450 to 500 grains and see how they work? You can always try wrapping them with increasing layers of paper patch until it all comes together.
  
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bullshop
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Re: Bullets for a Whitworth bore, cartridge gun?
Reply #3 - Today at 6:30pm
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Treat it like a muzzle loader.  Shoot pure lead at the minor diameter.
  
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