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e15cap
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AYDT????
Jan 10th, 2008 at 10:15pm
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Looked at an Aydt today that is marked 7.7mm which coverts over to .303". What size bullet is correct for this gun? All help is apreciated.
                                          Thanx Roger
  
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fallingblock
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Re: AYDT????
Reply #1 - Jan 10th, 2008 at 10:25pm
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You will need to chamber cast as well as check the bore as the 8.15 bores are all over the place.
Cheers,
fallingblock
  
Cheers,
Laurie
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tim_s
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Re: AYDT????
Reply #2 - Jan 11th, 2008 at 11:52am
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I'd suspect that you'll end up closer to .310-.312. Buffalo arms will supply you with an RWS type German stop ring bullet to start out. They can be used for assembled rounds or breech seated. They're not bad.
  
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jfeldman
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Re: AYDT????
Reply #3 - Jan 12th, 2008 at 11:28pm
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Hi Roger
My 8.15 X 46R is marked 7.6M/M and the barrel slugs at .316
I know of some that measure .323 ..... so you just have to slug that bore.
Regards, Joe

P.S  See you at the .22R shoot?
  
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jeffer1942
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Re: AYDT????
Reply #4 - Jan 13th, 2008 at 9:11am
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Just to add to the discussion.  My 8.15x46 is also marked 7.6mm and slugs out at .310.  Slugging the barrel is the only way t make sure.
Jeff
  
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e15cap
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Re: AYDT????
Reply #5 - Jan 13th, 2008 at 9:29am
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Joe and all, thanx for the replies. This is Bob R's gun and will try to slug it this week.   Roger
  
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MartiniBelgian
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Re: AYDT????
Reply #6 - Jan 13th, 2008 at 10:55am
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'scuse me, but aren't you gents forgetting that the indications back when on German (and other) rifles always gave land diameter of the barrel, not groove diameter...
  
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Fred Boulton
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Re: AYDT????
Reply #7 - Jan 13th, 2008 at 2:53pm
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Martinbelgium is correct: not just German practice but generally in the 19th century. So .303" is the land dia of a Lee-Enfield and the bore is typically 312/314".
According to my own bible on German Schutzen rifles, (Altescheibenwaffen), the groove diameter of an 8.15 x 46R was .316" when new, but it was standard practice to "refresh" the barrels after a few years. I believe that H&N in Germany still make bullets in a variety of diameters up to and including .323".
Slug it.
Fred.
  
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waterman
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Re: AYDT????
Reply #8 - Jan 13th, 2008 at 9:22pm
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MB has it right, as usual.  My Haenel Original System Aydt is marked 7.7mm and has a .317 groove diameter.
  
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