peterk123
NES Member
New brass. I resized them. I used a digital and beam scale for each powder charge. Same bullet (hornady 68 gr bthp). Even checked oal measuring off the ogive. Same primer (cci). I did not crimp the case mouth.
Brutal SD.
About my scales. Inexpensive digital scale. I think it is pretty good but probably a tenth or two grains off at times. The beam is a Lee. It's a bit of a pain to use but likely accurate. I have an RCBS 505 coming.
The good news is that the 68gr did fairly well, except for the ones that were way outside the average. Four shots went into the same hole, so at least I'm on the hunt. My gun (ar15 with 20 inch barrel and 1:8 twist) certainly prefers at least 68gr.
What could I be doing incorrectly in my process? Thx Pete
Brutal SD.
About my scales. Inexpensive digital scale. I think it is pretty good but probably a tenth or two grains off at times. The beam is a Lee. It's a bit of a pain to use but likely accurate. I have an RCBS 505 coming.
The good news is that the 68gr did fairly well, except for the ones that were way outside the average. Four shots went into the same hole, so at least I'm on the hunt. My gun (ar15 with 20 inch barrel and 1:8 twist) certainly prefers at least 68gr.
What could I be doing incorrectly in my process? Thx Pete