Originally Posted by AtownBcat
thanks for the reply...but what you said actually brings up another subject that i have had a hard time wrapping my mind around...you mentioned that first you will play with the charge and get it dialed in..then play with the seating depth. Well doesnt this change the load? I mean if you seat the bullet deeper it would increase pressure right...or am i missing something?
No, actually pressure and velocity decrease with seating the bullet deeper. IOW the further from the lands you seat the lower your pressure and velocity will be.
I reload for 9 different 300 win mags and my go to loads have always used RL22 and Fed215 primers. Federal primers have almost always given better results in the rifles I reload for (over 40), sometimes the difference is dramatic and other times more subtle
You have decent groups for a rifle with less than 100 rounds through it. IME rifles will settle down and begin to shoot better after 100 rounds or so. Perhaps that is because I am zeroing in on a load the rifle likes.
Horizontal stringing is mostly due to shooter error (canting) or wind deflection.
For cleaning I use bore foam, either Wipe Out or Outers.