Thread: .303 Reloading help

Id' suggest just using the Highland 150gr SP.

So for 123/125gr some notes I have come across for hunting,

Adi 2206H / IMR4895 with 125gr bullet starting at 40.5grains 2371fps 300yds =1573fps
ADI2208 / IMR4064 with 125gr starting at 40.5gr muzzle=2297fps 300yds = 1532fps
125gr Sierra spitzer 49gr Re15 = muzzle 2835fps 300yds = 1932fps

I would suggest starting 1gr lower and not tend to go much more than +1 higher given the gun's age now.

Go up in 0.5gr watch for primers starting to squash.

Also the bullet is so short it could be off the lands a long way and a worn throat? would make it worse they may not be very accurate, maybe crimp?