Researcher,

I'm curious about those 1880's-1890's Parkers with .750" to .757" bores. Are there any factory specs or data from that time to suggest that those bores were within original tolerances? My usual knee-jerk reaction when I hear about 12 gauges with bores that large is that they may have been honed out sometimes in the last century or so. I could be wrong, but I think the Parker cult following that has existed for so long may have led to a higher percentage of them being shined up. Have you encountered smaller bores in the same vintage Parkers? Thanks.