I'm sure most here know of Skeeter Skelton's load of 7.5 grains of Unique under a 240 to 250 grain Keith style boolit for the 44 Special.
That load gives a muzzle velocity of roughly 950 fps.
I want to duplicate that load using 44 Magnum brass to shoot in my Model 29.
In looking at Alliant's web site they list 11 grains of Unique as the max load for that weight boolit. (1211 fps)
Reducing that by 10% would give a starting load of 9.9 grains.
Lyman data lists a starting load of 9.8 grains of Unique under the 429421 with a book velocity of 912 fps. (seems to be a bit slow for the amount of powder to me...)
I was thinking (very dangerous I know) those starting loads seem a bit on the high side.
Since the 44 Magnum is about 10% longer than the 44 Special I was thinking of just upping Skeeter's load by 10%. Say 8.3 to 8.5 grains of Unique.
Am I asking for trouble if I do that?
I'd love to hear from someone who has done this and would share their experience.