I made it out to the range last Saturday and tried several types of powder useing the same Lee 240gr gc bullet. I shot all of the groups at pig distance, 50 meters, and used a rest and shot over a chrony.
Since I am not able to put a scope on my Rossi, I used my Redfield Receiver sight with a very small appature. The front sight completly covered up the 4" bull so I used a 6 o'clock hold at the bottom of the bull.
I used all of the faster pistol type powders that I had on hand. They were tightgroup 6gr, blue dot 8 gr, bullseye 5.5gr, red dot 6.5gr, 231, 7gr, and the new formula unique with 8gr.
At that distance, the Red dot got the best group at about 2.75 inches but the volicity was only about 850fps. That would work good for the chickens and pigs but I'm not sure that the bullet would remain stabalized by the time it gets to the turkeys and rams.
All of the groups were within 4" at that distance, with the exception of the Blue dot, which was 4.75 inches. It left lots of powder in the bore with that load and it had the highest extreme spread and standard divation also.
I was thinking that maybe I would use the red dot for the chickens and pigs and then develop something else, a little more volicity, for the turkeys and rams. Maybe I could even use the same sight settings.
If anyone has any good ideas on this, please share them. Most of those loads are below published minimums in any of my load manuals and I don't like to get too far from what is in the manuals, even on the low side.
Sixgun