Originally Posted by marioq
Well guys I just loaded 52-54.5 of h4831 seated at the lands. Going to shoot Monday and see how they fair!!!!
Have 140 gr Bergers. Still
Plenty of case left for more. May try retumbo if these done do well. I have. 3 pounds of RL 33 I might try too.
And this follows suit with the subject. I have a LR 111 6.5x284 using lapua brass, 215 champion primers( not sure the difference between these and match 215). And Berger 140 hunting.
The 215 Champions are standard magnum primers, the 215M is also a magnum primer but match grade. I have not noticed a difference between the two in velocity, accuracy , or ES. The Fed 210 Match primers, are not magnum primers, but have been used in many of the loads in this thread, and typically used with H4831sc. Retumbo loads have been shown using either 210's or 215's. You can see a difference between these two primers in terms of load performance with either powder with a change between the two. The 215's can produce higher velocity/pressure, so keep an eye on pressure signs when working up to max charge weights or seating your bullet close or into the lands. As has been seen, these details can make a difference when optimizing loads in the 6.5x284. Good luck Monday!