doublegunshop.com - home Forums General Discussion DoubleGun BBS @ doublegunshop.com Loesche drilling

Hello
One way is to use a chamber gauge
.730 is the proper diameter for 16 gauge

Or you could measure a majic marker, mine measures .725 and add a layer of masking tape to make .730.



Stick the butt end of the calibrated majic marker into the chamber and see how far it goes in

Let us know what you find out
Mike

Hal,
Some people use parafin( avaliable in canning section in gro.store)as a quick chambercast and this would be better than plaster of paris.When I was a young lad,melted sulfur was used. Of course,cerrosafe is best(it is more precise), but parafin will indicate case length and which case head family the cartridge is in.This is for the rifle, others have addressed the shot shell chambers, don't forget it was proofed for 65mm shells.
Mike

Its a 12 ga Skeet.

Thanks Mike. I wonder if my duck stripping wax would work. I've poured lead in muzzleloader barrels before to make lapping slugs.
Maybe I can use the wax in the shotgun barrels also?

Will let you know when I get back to ND. I'm in MN now with the kids.

OH. Yes, The 12 gauge diameter of interest is .795

After coating with Rig grease, I measured the length of the shotgun chambers and forcing cones and the diameters of both bores with the poultry stipping wax that I
use on ducks. Twelve gage shotcups made handy bore plugs. It looks like the 12 ga.
chambers are 2.5 in. (60 mm) long, with a 0.008 in. taper from the 0.806 in. base to 0.798 in. at 60 mm. Bore diameters of 0.728-0.732 in. are reached about 3 cm. ahead of the chamber. I had a very hard time pushing the rifle chamber cast out of the barrel, so switched to paraffin that came out with a few stout taps on a 1/4 in. rod on the oily cloth plug.

Rifle rim diameter is 11.6 mm. and the 75 mm. case tapers from 10mm at the base to
9.3 mm at the neck. The forward third of the chamber seems to be nearly cylindrical. Traces of rifling first appear at about 80 mm. Throat erosion may have occured as a uniform bore diameter of about 8.5 mm. is not reached until about 90 mm. or 1.5 cm ahead of the chamber.

So were Austrian shotguns ever chambered 2 1/2 in. and can my measurements
help determine what metric cartridge this rifle is chambered for?

[img]http://http://s91.photobucket.com/user/Halpics_bucket/media/shotgunchambers_zps4127bc7c.jpg.html[/img]

[img]http://s91.photobucket.com/user/Halpics_bucket/media/rifleclose_zps0b52baa5.jpg.html[/img]

[img][IMG]

http://i91.photobucket.com/albums/k283/Halpics_bucket/shotgunchambers_zps4127bc7c.jpg[/IMG][/img]

hope one of the above work for the shotgun chambers

For Hal:

Hal
Yes for the rifle caliber
I would suggest Cartridges of the World as a valuable tool

One of the older cheaper ones would work just fine

http://www.ebay.com/sch/Books-/267/i.html?_from=R40&_nkw=cartridges+of+the+world

PM me if I may be of assistance

And I would certainly investigate the 9.3x72R cartridge
http://www.cheaperthandirt.com/product/61944

Mike

9.3x72R specs

neck .385, base .427, rim .482, length 2.84, ctg length 3.27

There is a 9.3x74R but this should be too large for the chamber and also
not made in the time period of your firearm.

Here is some other reading of interest

http://castboolits.gunloads.com/showthread.php?75108-9-3x72R/page2

16 in circle shotgun caliber 16/65
16/1 full choke
Letters are manufacturing markings to allocate every step to a certain armorer
118/35 stands for the caliber of the rifle barrel 9.3x72R (according to the Reichsgesetz)

The weapon was proof shot with smokeless and �Schulzepulver� new type, proof house Suhl
1905 was the change to smokeless

The sequence of powder is:
1880 M71 military powder
Around 1895 �Schulzepulver� civil market
1905 smokeless
Therefore 2,5 g Sch.P. stands for 2.5 gram Schulzepulver with 29.3 gram lead bullet
2,1 gr B.L. stands for 2.1 gram flaked powder Stmg stands for steel jacketed bullet��

if I make a rifle chamber cast with wax what is the procedure?