Thread: 308 reloading

hey guys I have a 1:11 twist 20" barrel finnlite and been doing some reloading but not having alot of luck. Shooting 150gr factory corelokts sub moa and federal blue box about 1-1.5moa so these will be what I shoot majority of the time in the bush but do chase Rusa and will be doing some kaimanawas tops and ruahines slips shooting out to 500m.
Loading 165 speer btsp @ 2.8" COAL from 44-46gr. Got about 0.9" @ 45.5, which was the best by far, so loaded up a few of those however shot a group of 5 today and it was massive(first 2 close enough, 3rd opened up to 1.5-2" then 4th and 5th were fliers). I was shooting off a bipod with a rear rest and was very comfortable so wasn't shooting position.
Unsure if i should try loading 150s or stick with 165grs or even try 178s. Thinking more LR suitable pills like eldms, NBT etc. About to be massively time poor so any help is welcomed!
Cheers