Gauges: Throat Erosion, Go, No-Go for .30-06

[triggerz]

Hello Everybody,

After gathering a modest collection of .30-06 rifles thru the years, i.e., '03's. 03-A3's. 1917's, and M1 Garands, I'm now thinking of getting a throat, G0, and No-Go gauges. I have acquired a Ted Brown muzzle gauge so I'm good on that.

What brand of Go, No-Go gauges would you guys recommend? I'm looking getting the set. I see that Brownells has the Clymer and Forster gauges.

On throat-erosion gauges, they have the Ara-Mor and Merchant brands.

Any recommendations? And where could I get the best prices?

Thank you all for your indulging me here.

And Merry Christmas to you all!

 

[bigfatdave]

I don't know about price, but I think the CMP has those, you may want to check their price while shopping.

 

[GCBurner]

According to the CMP armorer, the Clymer headspace gauges are closest to the manufacturer's original standards. The M1 was designed as a battle rifle, and headspace tolerances aren't as tight or critical as on a match rifle.

 

[Jim K]

So what kinds of problems are you having that indicate bad headspace or excess throat erosion? Are you going to install new barrels on any of those guns?

It takes a lot of shooting to cause headspace problems and throat erosion; the latter is mainly a problem in machineguns and high volume target rifles.

Of course if you just want to check out your guns, it is your money, but very few gun owners will ever have a need for any of those gauges.

Jim

 

[triggerz]

I notice that the Clymers aren't cheap. But I have been seeing (and buying) .30-06 war relics and want have some peace of mind that their headspaces are ok thus safe to shoot. I also have spare bolts for my Garands, '03's, and 1917's. I thought it may be good to have some confirmation that their headspace would still be ok with these spares. On the throat erosion, it is more of wanting to know the condition of these cherished relics.

 

[Jim Watson]

The M1 was designed as a battle rifle, and headspace tolerances aren't as tight or critical as on a match rifle.

Hatcher said the Garand was specified with substantially narrower headspace tolerance than a 1903. How that compared with a hunting or target rifle, I don't know and can't look up because I have not yet replaced my copy of the book.