Re: 185-gr SWC, Chap. 4: Blue Dot? Well, Maybe
Posted: Fri Jul 24, 2009 12:41 pmSiringo-
I did experience some case head expansion. I posted the measurements in the thread, but I suspect they got buried under the verbiage.
After firing the last series, case head expansion measured at the front edge of the extractor groove was:
33 grains . . 0.0000"
34 grains . . 0.0000"
35 grains . . 0.0006"
36 grains . . 0.0004"
37 grains . . 0.0007"
I'll leave interpretation of this to persons with more expertise than myself. These are measurements of a single case at each level, Because variation around these values is to be expected, higher values are likely to occur for any charge in the list.
--Bob
I did experience some case head expansion. I posted the measurements in the thread, but I suspect they got buried under the verbiage.
After firing the last series, case head expansion measured at the front edge of the extractor groove was:
33 grains . . 0.0000"
34 grains . . 0.0000"
35 grains . . 0.0006"
36 grains . . 0.0004"
37 grains . . 0.0007"
I'll leave interpretation of this to persons with more expertise than myself. These are measurements of a single case at each level, Because variation around these values is to be expected, higher values are likely to occur for any charge in the list.
--Bob