I just picked up an interesting SMLE no1 mk3 and need to check headspace as it is not an original “factory” rifle. Can anyone lend out “go” “no go” or “field” gauges for a 303 British? I’m asking because Midway and Brownell’s and every other vendor on the internet are out of stock.... My rifle is all real tight. I’m concerned it might be too tight. Want to check it out before I spend lots of time trying to smooth out the action or try to fire it. I’m located in Garner (Raleigh area) Thank you much.