RE: T-7 vs. APP measurements
T7 is 15% hotter that BP/Pyrodex. APP im not sure.
Try 60gr T7 and top out at 70gr if most of her shooting will be short distance.
Just noticed that you are using 3f T7, Max out at 70gr. I used 80gr 3f t7 and it worked perfect at 50 and 80 yards on 2 deer. With a shot placed behind the shoulder, the deer doesnt stand a chance.
What kind of primers are you using?