Fuhrmann-

1 ounce = 16 drams = 437.5 grains.
1 dram = 27.34375 grains = 1.772 grams.
1 gram = 15.432 grains = 0.564 drams.

These rifles are not Africa or India 'Express' rifles at all.

See the little photograph next to my name Tinker on the left side of your screen?
Right click that image, select 'View Image' from the little menu and left click it (unless you're using a MAC, then you're on your own...) and the image will spring up, bigger in a new screen. That is a light hunting rifle, although it is a very unique one. I can specify actual measurements some other day (or go digging in my database...) but I assure you it's no 'Giant Killer' at all.

In that image you will see the rifle laying across the first target it printed in well over 100 years, along with some of the antique loading tools I use to load for it, and some brass cartridge cases that I machined out of solid brass for the rifle. See those two holes on the bottom left side of the target?
Those were the first two hits, left and right.
I chose the bottom of the target mount board so that I wouldn't 'mess up' the target with my first attempt with the rifle!!

That is the 'light one' of my two 16b SxS rifles, somewhat similar to Marrakai's 'howdah rifle' -- mine even has a bayonet lug! The other one is a bit heavier, with longer barrels, and it actually uses a slightly longer case and runs better with more powder (higher velocity etc).

The .666" Pure Lead round ball bullets cruise quite swiftly, even at 100 yards they go deeply into an old hard earth hill side.
At 25 yards, they will completely explode a 5 gallon pail of firm mud, very violently.

As a hunting projectile the Lead Round Ball is an angry bastard.
Both of my 16b double rifles, in this very entertaining fashion, are set up to take this .666" bullet diameter. The old 'pincher' mould I have for the round ball creates a very nice pure lead ball in that diameter every time.

Although I have not taken this rifle on game yet, I would definitely use it on our western Black Bear. Close up it's accurate enough for good, solid neck shots.

--Tinker