308 Winchester DPMS 24" Barrel testing the NOE 311-199-SP-K5 cast 200 grain bullets I cased a while back.
Sized at 0.311" lubed with White Label Carnauba Red which is stated to be good to 2700+ FPS
(https://i.postimg.cc/MTr7gzPD/IMG-0143.jpg)
I loaded CFE 223 42.0 grains figuring on about 2400 fps
AOL 2.7500
(https://i.postimg.cc/vBT1MYPZ/IMG-0145.jpg)
Now here are the results of my labor...
velocities 2430, 2446, 2455, 2425, 2349, 2367, 2383, 2419, 2373
Bore inspection showed a mirror clean results... ;D
I have a 360-278 Spire point mold from NOE. The slugs look like scaled up versions of your 30 caliber bullets. Mine are plain base for use powder coated in my 358 Win AR-15. Haven't had a chance to get a good workup yet.
Glad yours are working out. They are good looking bullets.