Re: newbie q's
CCI 250's work well for the 300RUM
Here is a little webpage that is always interesting when comparing primers.
Primer Testing Reference
Sometimes hotter isn't better, sometimes it is; depends on the cartridge and the load.
If some is good and more is better, then too much is just right.
My mind is a raging torrent, flooded with rivulets of thought, cascading into a waterfall of creative alternatives