And how did you determine that pressure sign were not present?
By pressure signs I mean the usual obvious signs that we all look for. Taking into account the chronographed velocities vs. max. velocities from reloading data.
Like hard bolt lift, ridges around the firing pin indentations in the primer, flattened primers, and especially ejector slot marks on the case head. Having run a couple other powders up to maximum velocities (from reloading data), in this rifle with this brass, I know that the brass will show slight ejector marks when I push max. velocities.
For example, at 3100 fps with this same bullet and IMR 7977, I get slight ejector slot marks. Just enough to barely make out when I hold them up in the sunlight. I don't get those at 3100 with R-26.
