There's one verified 180 grain load on Reloader's Nest. 34.2 grs(reduce by 10%) and 2.5" OAL. Guy claims 1.5" groups out of a 24", 1920 Savage Model 99 Takedown.
One unverified 170 grain load of 35 grs, 2.053" OAL, out of a 20", 1924 Savage 99. Claims .85" groups with a Nosler Partition. Then he says, "My last 6 shots were inside an inch and a half." Salt grains are big.