Dean can you please elaborate why both are the best available? Thanks in advance.

Frank, I’ve used Jon’s wall thickness gauge and find it repeatedly accurate and easy to use. The other two I have used, for me, are difficult to get repeated accuracy and for me, are harder to use.

Maybe his bore mic is no better than any others but I just think if he can make a wall thickness setup as user friendly as it is it just stands to reason that his bore mic must be a good one too. Just my opinion, but having experience with it, I think it’s a valid opinion.

YMMV





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I have heard nothing but great things about Jon's wall thickness gauge and I will also get the bore measurement gauge. I looked at his website and everything looks to be top notch quality. I think my passion for Parkers and vintage guns justifies that kind of investment. Yes you pay for a quality tool(s) but it reminds me of the saying: I'm too poor to buy cheap things

Everything looks great even his dent removal tool.

Thanks for the recommendation!

My Parker 10 and one of my 12ga guns both have oversized bores. I think you'll find many early Parkers have oversized bores. The 12 has .744 and the 10 I'm not sure of but I think it's up in the .800 range. The .729 standard didn't come into effect till after Parker was making guns for awhile.

A few of our late PGCA members were working on measuring and tabulating factory over bored guns, especially 10 fa. guns. I don’t know where the unfinished results of their research ended up.





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My 1889 EH 2 frame 10 ga. Has .802 bores