My 6.5 is not complete. My 6 is.
1. Your load is to hot for safety.
2. .75 from a semi is not 'bad', of course there is always room for improvement.
3. I recommend CCI primers, they can take the semi auto hard hitting firing pin better.
4. I never got what I wanted from H335, IIWM, I'd try something else.
Monday I was dinging steel out to 700 with the 6. It's not perfect but getting there. I'm using AR-Comp right now.
The biggest problem is that loaded rounds disappear so fast