Reply with quote #1
Can anyone tell me the case capacity (in grains of water) of the 6MM BR and the 6MM Dasher? Thank you
Reply with quote #2
My 6Dasher holds 41.3gr of water using Lapua brass.
Reply with quote #3
I measured 200 std 6br Lapua cases after fireforming once in a std chamber. I got 39grH20 +/-.3gr. I kept those which were +/-.1gr for group shooting.
Reply with quote #4
I measured a few before fire-forming and then again after:
Lapua Brass / .271 Neck:
Before = 37.2gr
After = 40.7gr
Difference = 8.6% / 3.5gr
On a side note here, capacity will very from chamber to chamber and from different lots of brass.
Reply with quote #5
My 6BR after firing and FL sizing in a Redding die is 38.4 grains H20, with a spent primer in the case. As others have noted, that number will vary slightly depending on brass lot, chamber dimension, and how tight your FL sizing die is.
Reply with quote #6
My Dasher measures 41.6 grains H2O, Lapua Brass, Dave Kiff reamer, 0.272" neck.