I have one of the worst bubba sporterized #4 rifles ever. It appears to have been FTRed twice. It has a #2 bolt head. The bolt body serial does not match.
The barrel and receiver have fairly heavy rust pitting on the outside of the receiver and barrel. The machining on the outside of the barrel is the sorriest workmanship I have ever seen on any military rifle. The tool bit dug in .030 in several places and the the cuts miss match about .015 at the location of the steady rest. The inside of the bore has some bad scars from a poor clean rod. I paid $25 for it about 20 years ago because it had reasonably good lands in the 5 groove barrel. Later I thru the really crummy beat up wood in the trash and put on some less crummy wood. I did nothing to the less crummy wood but put it on.
I also found one of the rare Redfield receiver sights that attaches with the existing ejector screw and rear sight cross pin holes. I put that on and loaded some 174 grn Hornady RN bullets with IMR4895. The groups were 1.5" to 2.0" at 100 meters....
No the .312 diameter 174 Hornady bullet is not a long range bullet, but it also is excellent in the 7.65 Mausers both 1891 and 1898/09 rifles.
With all that said one of these days I will try the Speer .313 RN someday. I have 400 of those squirreled away. They were discontinued in the 1970s I think.