Bore Slugging & Chamber Casting

[quickdtoo]

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.
 

[PHATINJUN]

Thanks Quick now all I got to do is remember to call bore slugging bore slugging and chamber casting chamber casting :)Kurt

[quickdtoo]

Might as well get chamber casting in here too!!

http://www.4-dproducts.com/submenu/Cerosafe.htm

http://www.surplusrifle.com/shooting2005/chambercast/index.asp

http://www.brownells.com/aspx/NS/GunTech/NewsletterArchive.aspx?p=0&t=2&i=39

http://www.trackofthewolf.com/(S(afs4ge55qxhm5jma4yigt0bi))/categories/PARTDETAIL.ASPX?CATID=2&SUBID=204&STYLEID=1074&PARTNUM=CERROSAFE

[trotterlg]

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

[quickdtoo]

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