Adding fuel to the fire, as they say, I note that the Pedersoli loads for the Kodiak are talking about using Swiss powder.
It is felt by many (including me) that Swiss powder is more powerful than black powder. (Note, I didn't say more powerful than 777.)
Anyway, to hit the same point of aim with my flinters, I found I needed to reduce my Swiss loads about 15% as compared with the black powder load I was using before.
If they were writing their book and thinking about Swiss powder, that could explain the wimpy load they listed. It would already have that reduction built into it.
An old rule of thumb for a starting load is a grain per every .010 of the caliber. That means 45 grains for a .45 caliber, 50 grains for a .50 caliber etc.
This usually ends up being about the minimum load for good target accuracy out to 50 yards.
It is felt by many (including me) that Swiss powder is more powerful than black powder. (Note, I didn't say more powerful than 777.)
Anyway, to hit the same point of aim with my flinters, I found I needed to reduce my Swiss loads about 15% as compared with the black powder load I was using before.
If they were writing their book and thinking about Swiss powder, that could explain the wimpy load they listed. It would already have that reduction built into it.
An old rule of thumb for a starting load is a grain per every .010 of the caliber. That means 45 grains for a .45 caliber, 50 grains for a .50 caliber etc.
This usually ends up being about the minimum load for good target accuracy out to 50 yards.