doublegunshop.com - home Forums General Discussion DoubleGun BBS @ doublegunshop.com "Herakles" Compound Gun Barrel Steel

Recently purchased a W. J. Jeffery hammer 12 ga. Serial 8468. Underside of bbls is stamped "2 3/4 case" and on topside one barrel has address engraved while the other the inscription in the subject line. I found Cornell publishing has a Jefferey 1904 catalogue reprint mentioning this steel. Anyone have further details on Herakles compound steel? (BTW, has a swamped rib going by the definition in the recent thread)

This listing was apparently in the 1904 - 1914 W.J. Jeffery & Co. catalog, courtesy of Boyd Taylor Thompson



From L' Armureire Liegeoise Jeffery sourced "Herakles (Hercules) Compound Gun Barrel Steel" from Canons Delcour
https://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=387087

Canons Delcour likely sourced the Siemens-Martin steel from Acier Cockerill Manufacture Liegoise, which was the source of the "rough forged tubes" used by the U.S. double gun makers.
I've analyzed a Pieper "Eclipse" barrel (Pieper used Cockerill steel) and it was non-standard (high phosphorus) AISI 1030 with a tensile strength of 99,500 psi. Typical pre-WWI "Belgian Fluid Steel".

Stumbled upon this
https://www.thefirearmsforum.com/threads...l-shotty.80579/
"I have a 1892 Eclipse Gun Co. Hercules Compressed Steel double barrelled shotgun; patent December 20th 1892."

Thanks for the responses, Drew. I'm a little unclear on how the barrels were sourced from Canons Delcour since the gun pre-dates that company by 20 years. The serial # block corresponds to guns made between 1898 and 1902.

The Delcour-Dupont family started making barrels in the 1880s.