View Single Post
Unread 07-28-2020, 06:59 PM   #23
Member
William Davis
PGCA Member

Member Info
 
Join Date: Nov 2011
Posts: 1,191
Thanks: 144
Thanked 792 Times in 432 Posts

Default

My 2 cents worth, spring loaded bore gages, expand take out and measure with a micrometer work shallow & take some pratice to use properly. Have a set never use them, can’t get repeat consistent Measurements. Chinese and cheap, Starrett set may work better.

Inside micrometer is easy to use and accurate. But is also shallow, 1/10 inch or so from the muzzle. Think I paid 60-70 bucks for my Mitutoyo inside mike used. New double that price. Use it a lot general shop work, not on shotgun barrels. Have a Mitutoyo tubing wall thickness mike too, useful but again 1/10 or so deep.

Deeper accurate enough not real expensive the Skeets Gage its the one I use on barrels. Wall thickness I get somebody else to measure for me. Would buy one if I saw a deal.

Never owned one of the inexpensive dial deep calipers. Opinion without experience would not bet a Chinese 5 inch deep dial is as accurate as a Skeets & for sure won’t go deep enough.

William

Last edited by William Davis; 07-28-2020 at 07:02 PM.. Reason: Spell
William Davis is offline   Reply With Quote
The Following User Says Thank You to William Davis For Your Post: