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DonN
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Strange Parlor Rifle
Feb 16th, 2011 at 10:15pm
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I was at a gun show and presenter had a display of german parlor rifles. One was unusual to say the least. The rifle was typical German Schuetzen style parlor made in the late 19th or early 20th century. The barrel was about 28" long and back bored. The rifling extened about 5" into the barrel the balance was open back bored. Now what made it unusual was on each side of the barrel just at the end of the rifling two grooves where cut into the barrel. They extended into the bore and the opening into the barrel was about an one-half inch wide and two inches long. Does anyone know why this was done? What was the purpose. It would seem to me once the bullet hit the space all pressure would be lost and the bullet would coast through the barrell. The fella who owned had no idea why it was done.
Thanks Don
  
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wesg
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Re: Strange Parlor Rifle
Reply #1 - Feb 17th, 2011 at 9:03pm
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If I'm understanding your description right, they could be for retrieving cleaning patches. This is allowed with modern bloop tubes for smallbore.
  
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frnkeore
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Re: Strange Parlor Rifle
Reply #2 - Feb 18th, 2011 at 6:52pm
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My guess is that they were to cancel the vacuum behind the bullet to maintain the the velocity through to the end of the barrel.

Frank
  

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DonN
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Re: Strange Parlor Rifle
Reply #3 - Feb 18th, 2011 at 8:18pm
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Frank your answer could the reason for the grooves. I talked to the owner of the rifle and he couldn't come up with a reason. I wonder how it worked if at all.
Thanks  Don
  
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