Welcome ....
Lots of members here swear by the 45 cal. for whitetails...
what length bbl. rifling and twist?
found a tight patch ball combo shot best.
patch weave imprint on round ball.
You can test this by cutting a long patch strip.lube it and start a round ball down the bore..then simply
pull out the started round ball by the long patch and inspect.
Stay way from prelubed patches...due to age and shelf life.
I use mink oil for a hunting patch lube.
at the range I use Hoppe's bp lube.
Don't be afraid to try 2f and 3f in your load work up.
Start at 50 grains and work up. 10 grain bumps.
stop when you can no longer clover leaf at 50.
That will get you in the park.
Good luck and we all expect a report when you find your happy load..one of the things I enjoy doing with these rifles.
More powder! More Lead!
here's an example of load work up.
holes touching...now to tap sight the right direction.
3" target at 50 yards
aim small- miss small. rings true.