Since it is a .54 caliber Renegade with the 1-48 twist try starting it out at 80 grains of 2f grade powder with a .530 diameter patched roundball. I like a .015-.018 thick patch. Your best accuracy will probably come in at 90 grains, but I would still start at 80 grains, shoot about five shots and then move up from there.

With Maxiball you will find 80 grains seems to be the magic number. At least in my four Renegades that seems to be where they hit. Also you might want to look at some 310 grain Buffalo Ball-ets. They also shoot very well out of the Renegades.

Don't over look 300 grain R.E.A.L. conicals as well. My group of .54 caliber friends that I hunt with have been killing deer now for many years with that conical. They shoot 80 grains of powder with a wonder wad under the conical.

It would not hurt to get a bottle of wonder wads as they do help if the patch starts getting burned when shooting Triple Se7en. With a wonder wad the accuracy will still be excellent and you swear you could use the patch again (which I have done to prove a point).

That is a great rifle you have there. One of my very favorite. With some Green Mountain Drop in Barrels that rifle can be made to do anything. I have been shooting some fast twist 1-28 .50 caliber barrel out of my Renegade and the accuracy is exceptional. I also have a .58 caliber (and .62 caliber) roundball barrel for the rifle that will shoot circles around most open sight rifles out there.

Keep us posted on how the rifle shoots for you.