renegade
The book answer what some others have indicated, The Renegade "should" be twisted 1-48 which is an intermediate, compromise twist rate in an attempt to satisfy both RB and conical shooters. But....
I have read elsewhere that there may be some Renegades twisted slower from the factory, intended for PRB. You may also have an aftermarket barrel, so my question is......have you measured the twist rate? I have 3 sidelock traditional ML rifles, and I was wrong about the twist rate on two of them.....for many years now mind you, 'till I measured them. My TC White Mtn carbine, which shot PRB into plate sized groups turned out to be twisted 1-20!!!!
The two .50 TC rifles with 1-48 twist with which I have experience have shot PRB very well with a modest load of 50 gr FFF and cut denim patch. I did not hunt (deer) with PRB as I am a big believer in conicals. The PRB's won me hams at several ML matches back in the day. Conveniently, at 50 yds, the .50's both shot the heavy Maxi (375 gr) with 80 gr FFF to the same POI, so I could shoot matches with PRB and hunt with heavy conicals with no sight change!
As an aside, he price of factory Maxiballs has driven me to start casting my own conicals. If not casting, I could see the attraction of PRB, as even commercial lead balls are cheaper than the Maxi's, but that's all for another post.