In my experience, testing the Hosford against the Clymer against the Galazan, one of these will work better for your purposes than the others.

All of them can be sprung or used incorrectly.

It's kind of like using a Ouija board in that technique is everything.

It's not like the Hosford or the Galazan are completely convenient but they are easier to move about than the Clymer set up that works for me (modified with the Gaddy or whoever it was piano wire spring).

For fairly decent portablity and reasonable readings, I also like the BoreMaster by Robert Louis Company.

If you take a look at the current incarnations of these tools, you will note the beefiness of the components, the fineness of the contact points, the springs to assist, etc. Experience has honed the lot and each has its proponents.

We might have more of a contest if we start discussing measuring pits or not-so-well-struck barrels.

Last edited by Montana; 02/21/12 09:49 AM.