Author Topic: Bore Slugging & Chamber Casting  (Read 3847 times)

0 Members and 1 Guest are viewing this topic.

Offline quickdtoo

  • Global Moderator
  • Trade Count: (149)
  • Senior Member
  • *****
  • Posts: 43301
  • Gender: Male
Bore Slugging & Chamber Casting
« on: November 27, 2007, 05:59:22 AM »
Bore slugging, or determining the dimensions of the bore of a rifle, comes up a lot, here's how:

Get some soft lead egg sinkers, make sure they're not the non-lead kind, they're too hard. Follow the basic directions in the link below. I like to pancake the sinker between dowels, you get a much nicer slug than one that you just push thru the bore, do one near the muzzle and another near the throat, push it out the near end, that way you'll know how much bigger it is at the muzzle than at the other end, it will likely be about .0005" tighter at the chamber end.

Tim

http://7.62x54r.net/MosinID/MosinSlug.htm


Egg Sinker Size:

Size 10
For use in .270, 7mm, and .30 Calibers 
 
Size 9
For use in .338, .348, 38/.357, and 35 Calibers
 
Size 8 
For use in .41, .44, .45, and .475 Calibers.
 
"Always do right, this will gratify some and astonish the rest" -  Mark Twain

Offline PHATINJUN

  • "Seeker of the Red Mist"
  • GBO Supporter
  • Trade Count: (144)
  • Senior Member
  • *****
  • Posts: 4076
  • Gender: Male
Re: Bore Slugging
« Reply #1 on: November 27, 2007, 06:09:32 AM »
Thanks Quick now all I got to do is remember to call bore slugging bore slugging and chamber casting chamber casting :)Kurt
Deceased 2/16/24
https://www.dignitymemorial.com/obituaries/machesney-park-il/kurt-heckman-11671764

Sportster17M2,20"Nickle410Tamer,26"410,
WTUTI12ga,WTU25-06,M158 22RemJet, 24"Ultra.204Ruger24"UltraFluted.204Ruger
M157Mannliker.22Hornet,24".223UltraFluted,   24".223Ultra,7X64BrenekkeUltra,22-250AIUltraFluted            7.62x39,22"303Britstub.32H&Rmag, .32303BritstubHuntsman,24" SS.50calHuntsman 58calHuntsman 12gaHuntsman
NEF RevolversSSModel73.32H&Rmag                     Blued Model73.32H&R mag The herd is shrinking!!
                                 "SOLI DEO GLORIA"

Offline quickdtoo

  • Global Moderator
  • Trade Count: (149)
  • Senior Member
  • *****
  • Posts: 43301
  • Gender: Male
"Always do right, this will gratify some and astonish the rest" -  Mark Twain

Offline trotterlg

  • GBO Supporter
  • Trade Count: (36)
  • Senior Member
  • *****
  • Posts: 3978
  • Gender: Male
Re: Bore Slugging & Chamber Casting
« Reply #3 on: November 27, 2007, 08:57:05 AM »
How do you slug a bore with 5 lands and grooves?  I know how to slug it, I just don't know how to measure it.  Larry
A gun is just like a parachute, if you ever really need one, nothing else will do.

Offline quickdtoo

  • Global Moderator
  • Trade Count: (149)
  • Senior Member
  • *****
  • Posts: 43301
  • Gender: Male
Re: Bore Slugging & Chamber Casting
« Reply #4 on: November 27, 2007, 09:19:01 AM »
If you google it, you'll find a bunch of discussions on it, but this is the best one I found.

Tim

Gunsmithing By Roy F. Dunlap
"Always do right, this will gratify some and astonish the rest" -  Mark Twain