I just installed two barrels and wanted to check the headspace on them but can't find the gauges (not in my tooll box, workbench or cleaning box) anywhere. Is there anything else I can use to make sure they're safe  to shoot?
TIA
M

headspace is usually checked on factory made barrels when the barrel extension is installed, what is the brand of barrel ??

Not that I know what I'm talking about, but aren't snap-caps made to SAAMI standards as far as min and max cartridge AOL?  Could you use one as a field-expedient headspace guage?

Quoted: headspace is usually checked on factory made barrels when the barrel extension is installed, what is the brand of barrel ??

No markings on the barrels or any other parts that I've noticed. I did this for a friend, if they were mine I'd just shoot them but I'm not willing just to hand them over to him without some sort of "safety" check.
Thanks again.
M

Load up a couple of mags with factory ammo (not reloaded), and cycle through by hand.  Does it feed smoothly?  If so, go shoot.

Examine the fired brass.  Look at the primers for pressure signs.  Look at the side of the case, just above the extractor groove, roughly 1/4" up.  Are there little shiny rings running around the circumference of the case?  This means the case is being excessively stretched.

If the ammo cycles through smoothly, and the brass looks good after firing, you are good to go.

Quoted: Load up a couple of mags with factory ammo (not reloaded), and cycle through by hand.  Does it feed smoothly?  If so, go shoot. Examine the fired brass.  Look at the primers for pressure signs.  Look at the side of the case, just above the extractor groove, roughly 1/4" up.  Are there little shiny rings running around the circumference of the case?  This means the case is being excessively stretched. If the ammo cycles through smoothly, and the brass looks good after firing, you are good to go.

That's a great idea. I was just about to tear my room apart looking for the missing gauges and that'd eat what daylight is left.
Thanks again.
M

They both shot great, thanks for all of the input.
M