Norma Magnums - 308 Norma Mag, 358 Norma Mag, the first short mags?
Kudos to he who mentioned 300 Savage, but 308 and 30-06 killed it. The Savage's neck is too short. My friend has a beautiful Savage lever action that was his dad's. He is in his 60's so the rifle must be pretty old. He said it was very popular deer family hunting rifle. Lever action was great.
+1 on 257 .Roberts, when I see discussions of replacing .223 in military rifle and 6.8SPC, 6.5 Grendel, .260 Rem were tested/recommended replacements, I thought of the .257 Roberts. Maybe one based on 257 Roberts, but high pressure like other military ammo. .243 Win and 6mm Rem killed the .250 Savage and .257 Roberts. Kudos to Ruger for bringing it back.
7x57, 8x57 - These are great. German marksmen competed with 8mm in 1000 yard competition. 8mm has high B.C. They are military ammo, so are efficient, or provide high energy per grain of powder. Hard to find brass for my brother 8mm. But Hornady, Norma, Nosler, Speer, Sierra make some fine bullets. 125gr, 150gr, 185gr, 196gr, 200gr, and 220gr. I've been reading Handloader Journal for 2 years (so I know everything ROFL) and March issues, last 2 years running, had 7x57 articles. They had some great loads tested in their Sisk test gun.
260, 7mm-08 - great hunting rounds. When I was having issues with my 7mm Mag, I came really close to getting a 700 B&C. Beautiful guns, and I don't even like fluted barrels. ha!
35 Whelen - Only seen one guy hunt with this, but a .357 cal with 30-06 case sounds like a fantastic hunting cartridge. Load pistol bullets with SR 4759for plinking. Right on.
284 Win -
6.5x55 -