I'm looking for a field headspace gauge that is .074. I ordered a Forster Field gauge, but it is .070 and I want one that is military spec .074.
I'm looking for a field headspace gauge that is .074. I ordered a Forster Field gauge, but it is .070 and I want one that is military spec .074.
Forster will make you an .074 gauge if you ask them. Or, look here: http://www.arrowmark.com.au/gauges.aspx
Cut a 1/2" circle from an aluminum beer can. Measure its thickness with an accurate caliper. It's probably .004" thick. (If not, drink a different brand and try again.) Apply it to your .070" gauge with a tiny dab of sticky grease. Violá - .074" gauge!
If you're compelled to be more precise, spend $4 at Harbor Freight and cut a shim from the .004" feeler.
32 Piece SAE/Metric Feeler Gauge
Item #32214
Only: $3.99
Last edited by Parashooter; 07-19-2013 at 09:39.