1883 GH Value

[Bruce Day]

Low pressure shells from RST. We see that repeated so often it becomes a mantra.

But we know what Parker recommended for 16 ga guns, we do not have to guess.

Photo 1: from the 1886 catalog, 1 oz and 2 3/4 to 3 dram loads

Photo 2: from the 1915 Small Bore Shot Gun pamphlet , 1 oz and 2 3/4 dram

So here is Photo 3, RST 1 oz and 1200 FPS loads and Federal 1 oz , 2 1/2 DRE , and 1165 FPS . The RST at 1200 FPS run out to about a 2 3/4 DRE load. I shoot both cartridges regularly. I just picked up a couple cases of Federals at Reeds in Walker MN last Sunday at nice prices.

So we know because we have run through the numbers before here that the Federals produces about 500 psi chamber pressure more than the RST loads but both are at least 1000 psi less than service load maximums given by Parker. The RSTs leave more burnt powder residue than the Federals, which are very clean burning.

Some contend that RSTs produce less recoil. That just isn’t true when a person actually calculates recoil energy . In fact, of the two boxes of shells here, the RST produce greater recoil energy.

Some also contend that because the RST shell are 2 1/2” expanded length, they must be used in old Parkers. I don’t know about your old 16 ga Parkers , but all of mine are 2 9/16 “ . And Photo 4, from the current DGJ we know that the short length is not harmful and from so many Parker sources , we know Parker wanted it for better gas sealing .

I’m no expert , so I just follow Parker instructions. I’m off for Oklahoma soon, then Montana then Minnesota, then South Dakota, and more . I’ll be gone most of the fall and I’ll take along several 16s including this old beater Parker 16 and cases of RST and Federal shells.

[Drew Hause]

I'm with Bruce on this issue, but it is important to note that the 1886 catalog refers to Black Powder which would have pressures about 2/3 of period Bulk Smokeless (in general use by about 1895).

These are the best actual Smokeless/Nitro pressures reported from turn-of-the-century studies

1 oz. 2 1/2 Dr. Eq. BULK Smokeless (1165 fps) was about 7000 psi
1 oz. 2 3/4 Dr. Eq. (1220 fps) about 8500 psi
I don't have data for Dense Smokeless which would be 1000 - 2000 psi higher

Frederick Toms, Sporting Guns and Gunpowder, 1897
https://books.google.com/books?id=inQCAAAAYAAJ&pg=PA132
Average pressure of Nitro Bulk powders; all 3 Dr. Eq.
16g 1 oz. – 7,784 psi
20g 7/8 oz. – 10,840 psi
https://books.google.com/books?id=inQCAAAAYAAJ&pg=PA158
2 1/2 Dr. Eq.
16g 1 oz. - 7,448 psi
20g 1 oz. - 9,195 psi

These are the 16g RST numbers that I have, from 2016
Ultra Lite 2 1/2” 3/4 oz. - 4600 psi
Best (2010 - replaced by Falcon) 2 1/2” 7/8 oz. 1125 fps, 7720 psi
I don't have the 1 oz. psi but RST is quite happy to provide the numbers

The Federal Game Load 1 oz was tested by Tom Armbrust way back in 2001 at 9160 psi

Nice that we no longer have to guess (or make stuff up ) when asked "What loads were recommended for my gun?"

More U.S. maker's load recommendations are down about 1/4 here
https://docs.google.com/document/d/1...UOZEFU/preview

Long shells in short chambers about 1/3 down here
https://docs.google.com/document/d/1...vwLYc-kGA/edit