Having acquired my first shotgun in more than a generation, I am interested in either buying ammunition, or handloading solid projectiles into roll crimped or star crimped 12 gauge 2.75-inch cases. While I refer to this ammunition as "Paradox," that's a mislabeling. Paradox ammunition had its projectile-loaded all-brass cases much longer than a conventional 12 gauge 2.75-inch roll- or star-crimped cartridge. I refer to bulleted 12 gauge 2.75-inch overall length cartridges. I am specifically ruling out any version that uses a sabot with reduced diameter projectile. I am ruling out conventional 12 gauge projectiles with its extreme hollow base. I am interested only in projectiles that are in the .715-inch through .735-inch range - about 12 gauge's bore size, more or less.

A - What commercial manufacturer offers such 2.75-inch ammunition?

B - Has any of you created handloaded ammunition similar to what I seek? If you have, please describe it in detail.

C - Has any of the cartridges identified or described in "A" or "B" been fired in fully rifled barrels rather than the 2-3 inches of rifling of a Paradox barrel?

Interesting questions.

What shot gun will you make up to a rifle (doublerifle ?) in 12bore?..

https://www.classicshooting.co...s?variant=1179491392

Here is the H&H load.

Wow! Worthwhile replies. Many thanks, guys. The shotgun is a nearly new Winchester Model 97. Despite its complexity when compared with currently made pump shotguns, it has a record of being exceptionally reliable. Its locking system is among the most durable of all shotguns. I selected it because it has an exposed hammer that has a half-cock quick safety. I also had its firing pin assembly changed. Its firing pin now rests away from a loaded cartridge's primer, so "hammer down" on live cartridge is as safe as that situation with a Colt Model 1911 pistol.

The slug appears to be remarkably similar to my custom conical for my .72-caliber English-style muzzleloading rifles. Mine has two large lubrication slots and weighs 775 grains at 30:1 casting mix. Its obvious potential problems are its three-diameters that taper to improve muzzleloading - from top-to-bottom .731inch ending at .725 inch. With your recommendation I'll pick up some and try my conicals as well.

I have used plastic cases for my 12 gauge choke-rifled Cogswell&Harrison Cosmos. Had acquired a Paradox tool that effectively crimps the plastic case into the waist of a Fosberry projectile of .735 in. in diameter and 740 grains weight. No problem assembling cartridges, but could not get the barrels to regulate. Believe I used Longshot powder.

Have sent emails to serious smiths to see if they are willing to work at regulating the Coggie for modern H&H paradox rounds.

Regards

Hi!
Chapter 14: Paradox guns- Shooting the British Double Rifle by Graeme Wright details hand loading for the Paradox and shooting results.
Excellent info.
Jim