doublegunshop.com - home Forums General Discussion DoubleGun BBS @ doublegunshop.com Inherited Peterlongo combo double info?

The longarm would have been #1684 in 1914 with a diameter of 15.6mm in the scattergun tube and a diameter of 8.5mm in the to be rifled tube. For the 1st pass for a 16 bore, 148.15 grains of the black powder Austrian Jagd und Scheibenpulver Nr. 1 was used and a cylindrical 888.88 grain lead slug. Upon passing this the intertwined "EF" was stamped. The 2nd proof a charge of 123.46 grains of powder was behind a 740.74 grain cylindrical lead slug. Upon passing the 2nd test the crowned shield was stamped. The 3rd proof used 98.76 grains of black powder and 592.59 grains of shot. After passing this test the crowned doubled headed Hapsburg eagle with the number 1 on the breastplate was stamped on the longarm. The standard or service load was around 70 grains of black powder behind 462.96 grains of shot. As far as pressures, different methods of measuring were used and there may not have been a target pressure. Under the 1929 rules, a 16 bore was to experience almost 13k psi on the 1st pass. Some give that the rifled tubes were proofed in the same manner of the smooth tubes but I have read that on the 1st proof 2 lead spheres were used on tubes that were to be rifled.

Kind Regards,

Raimey
rse

Wow, thanks, that's a lot of helpful information! Knowing they were tested that high makes me feel a lot better about shooting it. I may also load up some real blackpowder shells for it. (I shoot a bit of black powder already.)

Thanks again for all your help,
Chaz

I stumbled across an image of Johann Peterlongo and while searching for something Austrian ran across this thread.

Kind Regards,

Raimey
rse

Chaz:
1. RST will ship directly to you, if your local retailer is too far away to be "local". Go to their website. Buy by the flat,
mix and match inside the flat, and you're good to go.

Chances are it has a 65mm (2.5 inch) chamber in the shotgun, so ordinary 2 3/4 inch shells are a less-than-good idea.

2. Whatever you do, do not confuse 9.3x72R with the 9.3x74R cartridges.

- 9.3x72R started off life as a black powder round, roughly the equivalent of a .38-55. I'm not the expert on it, but I am aware there are different variations in the case dimensions of the 9.3 x 72R round such that the only way to deal with getting the "right" shells is a chamber cast.

- 9.3x74R is a modern, high powered cartridge suitable for taking just about any dangerous game, anywhere. Someone can correct me if I'm wrong, but in some countries where the smallest "legal" cartridge to use for dangerous game is the .375 H&H Mag, they will allow the 9.3x74R.

Big difference between the two 9.3 rounds.

3. A good cleaning to check the shotgun barrel would be in order.