Originally Posted by MTBULLET
how rapid are you firing the groups?
is the bbl clean ?
Retumbo -- 99 grains
Federal Primer -- Gold Medal 215M
180 Grain Accubond -- weight sorted to +or- 0.2 grains (actual spread min to max was 179.8-180.1)
I started off firing once ever minute or so (even my first groups would not group well). Then I sped up and slowed down to see if the temp of the barrell made a difference. I even cooled the barrell down in between cleanings and the cool barrell still would not group well.
The rounds that someone made for me that were grouping well grouped just fine no matter if the barrell had 10 rounds or 1 round down it, or if it was hot or cold. Totally night and day. The powder that is in the target loads that grouped well is spherical powder...anyone have a clue what powder that could be?
Also, I started out with a clean barrell. I put two target rounds down it to then started my shooting of the test loads. I would clean it after about 10 rounds.
Thanks for any help you can offer!