Aint nothing wrong with running your gun at 385fps with .28s
My vsr only ever shot 380 then 430 later on and I was perfectly happy with 260ft accurate range with a max of 280-300
AND you can fire semi auto incase shit hits the fan. If you had a bolt action, you're pretty much SOL when someone gets within full auto range.
And as a well experienced gundoc I can tell you the M14 is typically an excellent DM rifle.