Interesting they used 30gr. per dram, while a dram is actually 27.3gr. This doesn't sound like much, but when you're talking 6 drams or more, it's significant.

7 drams, the load I used in my 12 bore, was 191gr. actual weight, while with 30gr. per, it's 210gr. You can actually feel that difference on the shoulder, as it's getting close to another dram.

I like those charts, though and have copied them to a file. I suggest everyone do the same - it's good info.

9 drams at 27.3 is 245.7gr., call it 246gr., while at 30gr. per, it's actually 10 drams @ 270gr.(minus 3gr.) I used to shoot 6 drams in my 14 bore muzzlelaoder just about all day with round ball - 9 pound gun and the recoil was easy. Big push and a bit of a thump.

Check out those recoil figures. I wonder what weight of gun was used for those compilations? Even a piddly 4 dram BP load in a 12 has more fp recoil than a .470 or .458Win mag., yet the recoil speed is much lower for the 12, so it feels less.