With the short case neck and throating of the 300 savage, I can only give a professional answer after looking at a swaged throat slug. You won't need softnose bullets. Just air cooled wheel weight alloy driven at 2200-2300 fps, using a 150 gr or heavier bullets. It will expand almost identical to standard jacketed bullets out to about 200 yards. For longer ranges, heavier bullets will hold their speed up better to ensure expansion.
The louvern design is pretty good if your gun is properly throated, but the bearing is too weak up front for best performance.
The FN is a good bullet choice for ranges to 150 yards but with the 300's short neck/throat, only light bullets will chamber. The LFN or LCFN is the best choice.
The ultimate hunting bullets are my GOP (glue on patch) which uses computor labels to patch. I have driven pure lead out of an 06 at full power with excellent accuracy, no leading, or pressure problems. Of coarse pure lead is too soft for fast hunting bullets. Instructions with one of these molds walk you through the details of alloying properly, and my book covers the issues of importance.