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Normal Topic Five-groove barrels (Read 140 times)
condorsc
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Five-groove barrels
Feb 9th, 2026 at 4:48pm
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Asking for knowledge on determining suitable cast bullet and sized bullet sizes when slugging 5-groove barrels. I have a developmental Trap Door with an 1864 Springfield lock plate and a breechblock w/out a date, .45-70, and a .43 Spanish Model 1879 Argentine RB. Thanks for all help.
  
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fc60
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Re: Five-groove barrels
Reply #1 - Feb 9th, 2026 at 8:48pm
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Greetings,

If you are asking how to measure a 5 groove bullet, no worries.

I have a 5-flute micrometer.

Just mail me the slug.

Cheers,

Dave
  
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Dellet
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Re: Five-groove barrels
Reply #2 - Feb 9th, 2026 at 10:33pm
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Whole thread worth the read, Post #6  by texasmac has a great link 

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