cr- no one I'm aquainted with, has the 'spare' cash to become proficient using only factory ammo. If independently wealthy, it is possible, of course - none of my friends are - dang. Even at only $20.00 per box for '06's, that's $100.00 minimum for testing to find a descent load that your rifle likes and to get sighted - then comes the practise - several $100.00's later, it's time to hunt. At $80.00 (or more) per box for premiums in a .375, you've broken the bank just testing and sighting- even before practising to become proficient with the piece. Take the '06 if you don't load and spend several $100.00's to become 1 with it.