no go gauge for 303

[xcaribooer]

where can I buy a no go gauge for checking head space on 303 british? what is the approx cost? are they straitforward to use? thanks

 

[hunter5425]

Try winchester_070 (Gary) on this site. He is a distributor for Pacific Tool and Gauge and will either have one or can get one for you. They are easy to use, simply remove the firing pin assembly from the bolt, put gauge in the chamber and see if the bolt will drop in place , don't try to force it. If you are just checking an existing action you would want a no-go and field gauge, if you are rebarelling then a go & no-go gauge is what you need. Lastly if you are checking only one rifle taking it to a gunnsmith would be the most econmomical way to go.

 

[toyboy]

GAIRLOCHIAN


Search for him and enfield parts-he has go,no go and field.
They are home made but work good as i have the set.

Remove mag,slide guage under extractor and slowly close bolt and you will know your headspace...

 

[Hook]

GAIRLOCHIAN


Search for him and enfield parts-he has go,no go and field.
They are home made but work good as i have the set.

Remove mag,slide guage under extractor and slowly close bolt and you will know your headspace...

They work great, but his guages are mil-spec for headspace, not SAAMI spec.

The .303 Brit responds the best to neck sizing only as well. The good old Lee Loader is a great tool. Not something I see very often on gun show tables either. That does indeed mean something.

 

[xcaribooer]

I have "a few" 303's so I think I will get the set of 3 gauges , looks like for the price of having 3 guns checked by a smith I could own the set .

 

[wheaty]

Military spec gauges are different than SAAMI gauges. Maximum military spec is .074 while I believe SAAMI is .068 or .070

 

[Why not?]

Military spec will be fine. Even if you are going to handload, you can just partially size the brass as already mentioned.

Ted

 

[xcaribooer]

have a "go" and "field" gauge set coming from Bert

 

[xcaribooer]

so once I get the go and field gauges ,can someone explain the proper procedure for using them please and thanks

 

[lazysod]

hear hear! I've been wanting to learn how to know if my rifles are safe to shoot. The only advice I got was to look at the spent cartridges and just look at how much they stretch. I don't think this is sufficient so any help would be awesome!

 

[toyboy]

remove mag.
Slide go guage under extractor so it is held in place between the
Extractor and bolt face.
THE BOLT MUST EASILY CLOSE WITH NO RESISTANCE.

Remove go and slide in nogo same way.

The bolt should barely not close as if you would force it it might close--
Do not force it closed--

Field guage insert same way and bolt should not even come close to closing.

Too little headspace is as possible as too much headspace.

 

[xcaribooer]

thanks