I load .308 with 147gr FMJBT surplus "pulldown" bullets with 39 grs. 844 for a very mild ((2400 fps) and VERY accurate range/practive load.
I get sub MOA in my favorite bolt action and 2 MOA with a Rem. Pump 7600P with iron sights.
My 'go to' load for 223 is 24 grs 844 with 52 gr bullets. Far more accurate than I can hold the gun.
I may buy a 40 pound keg for long term future use.