I always found it interesting that Winchester never loaded the 30-30 with the 190 gr. Silvertip that they loaded in the .303 Savage. The .303 pushed it to about 1950 FPS IIRC, and the 30-30 at an advertised 2200 FPS. I've never bothered to chronograph the .303 Savage when I had one, and also never really cared to chronograph the 30-30 170 gr. Factory load. However, based on chronographing some .308 Win. and 30-06 loads a while back, neither cartridge reached advertised velocity. I used rifle with the common 22" length. I did also run a few 30-06 in 24" and 26" barrel in rifles I happen to own. Load were the 180 gr. Power Points in both cartridges.
Even more puzzling was Winchester not only did not load the 190 gr. bullet in the 30-30 but has AFAIK, never sold it as a reloading component. Retired gun writer Sam Fadala make note of this in his book, "WINCHESTER'S 30-30, MODEL 94". He commented that he would have to buy expensive .303 Savage ammo and pull the bullets to reload. As I recall, at the time I read the book, .303 Savage was selling for about #65 up for a box of 190 gr. Silvertip factory ammo. I'd hate to see what it would be right now. A nice read BTW.
I have a bullet mold, the RCBS #30-180-FN that casts a 190 gr. bullet in my alloy. I loaded up a box of ammo to what I estimated would give 1950 FPS. Interesting results as accuracy was good in the 1 in 12" twists of an M94 Winchester carbine and a Marlin 336 Texan. Based on the drop, I'd have to say I got the velocity pretty well spot on. Slight leading in the Marlin; probably due to the shallower Micro-Groove rifling but otherwise the test went well. I doubt I'll ever get out and do another deer hunt but if I did, and it was an area suitable for the 30-30. I'd try that load in a heart beat.
Paul B.