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Original Post (Thread Starter)
by LGF
The charge card for my 1885 10 bore specifies Curtis and Harvey No. 4. What would be the modern Goex equivalent?

Liked Replies
by Drew Hause
Drew Hause
This does not address your question, but should be of interest
1896 Rules of Proof Black and Nitro powder Service and Proof Charge Pressures

[Linked Image from]

Curtis & Harvey “T.S.” (Treble Strong) No. 6 (84 grain = 3 Dr. Eq.) was coarse Black Powder somewhat similar (but not equivalent) to Fg.
“T.S.” was developed in 1871 for the .577/450 Boxer-Henry cartridge used in the Martini-Henry rifle. It was a precursor to “R.F.G.2” (Rifled Fine Grain 2) manufactured at the Royal Gunpowder Mills, Essex, adopted in 1873.
C&H, “T.S.” No. 4 (82 gr. = 3 Dr. Eq.) medium grain similar to FFg
C&H, “T.S.” No. 2 (72 gr. = 3 Dr. Eq.) fine grain similar to FFFg.

Sporting Guns and Gunpowders, “Tests Of Strain On Breech Actions”, 1892
1 1/4 oz. 3 1/2 Dram Bulk Smokeless Pressures in 2 3/4” case
Long Tons/ sq. inch converted to PSI by Burrard’s formula
(Proof) with 6 1/4 Drams “Tower Proof” Black Powder and 1 2/3 oz. shot – 4.51 Tons = 14,034 psi
3 1/2 Drams Curtis & Harvey’s No. 4 T.S. Black Powder – 4.2 Tons = 12,992 psi
“Schultze” – 4.28 Tons = 13,260 psi
1 member likes this
by Flintfan
You may also want to try 3F as well. I have been shooting 4 1/2 drams of 3F Goex in a heavy Parker 10 gauge hammer gun for many years, and it performs wonderfully. I use 1 1/2 oz of bismuth, brass cases, and fiber/wool wads. Again, it was Sherman Bell that turned me on to using 3F in all shotgun loads. Through his testing he determined 3F was the closest granulation to matching the quality of "sporting powder" that was originally used in the late 19th century.

Never have been able to have them tested, and was always curious.
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