I have a 50 cal. that shoots about any thing stuffed down the barrel. It takes 10gr. more of APP to get the same results as I get with T7.
Trying to get APP and a new scope to work.
I also have a 54cal. It flat refuses to shoot any thing with APP that gives any thing close to a group. with T7 however it is a tack driver with about any thing stuffed down the barrel. I happen to like the Speer 50cal. 300gr. gold dots in the MMP purple 54cal sabots.
Ifn ya don't like the trigger pull adjust it. there are several web sites on the net that walk you thru the steps.

Al