Lrp pocket go-no go guage

[Frederick]

Seems no stock in the UK 

If any of you good people own one could you please mic the go and no go diameters .

I believe the primer diameter is .210 .

[Popsbengo]

Here's an extract from SAAMI

[Frederick]

1 hour ago, Popsbengo said:

Here's an extract from SAAMI

Perfect , thank you 😀

[Frederick]

I am looking at several companies that sell pin guages .

I can order a guage and specify my go - no go criteria .

At the risk of appearing thick 😄 , looking at the SAMMI diagram , what dimensions would be best ?

Should I use the .2085 as go and  .2100 as no go ? Or .2085 and .2101 ? Can't get my head around it 🥴

 

[Popsbengo]

I assume you are worried about finding oversize primer pockets in the head?  Maybe reusing brass that was primed with crimps?

As the maximum allowed tolerance is .210" I would suggest .211 (+1 thou) would be NO-GO,  ie testing for 'too loose'.  

I can't see what value a GO gauge is as the head arrives to you machined to tolerance so all you can expect to test for is oversize pockets.  Undersize would be highly unlikely.

[Frederick]

17 minutes ago, Popsbengo said:

I assume you are worried about finding oversize primer pockets in the head?  Maybe reusing brass that was primed with crimps?

As the maximum allowed tolerance is .210" I would suggest .211 (+1 thou) would be NO-GO,  ie testing for 'too loose'.  

I can't see what value a GO gauge is as the head arrives to you machined to tolerance so all you can expect to test for is oversize pockets.  Undersize would be highly unlikely.

You can buy a go - no go guage but everyone is out of stock .

Oh , and yes I am using swaged GGG crimped brass .

Makes sense to me at .211 for no go , too loose .

Not certain myself what purpose the , " go " , is for ?

As I have to specify both ends of the guage , think I will order .210 and .211 .

Thanks Popsbengo 🙂

[Popsbengo]

17 minutes ago, Frederick said:

You can buy a go - no go guage but everyone is out of stock .

Oh , and yes I am using swaged GGG crimped brass .

Makes sense to me at .211 for no go , too loose .

Not certain myself what purpose the , " go " , is for ?

As I have to specify both ends of the guage , think I will order .210 and .211 .

Thanks Popsbengo 🙂

Makes sense; max tolerance and plus 1 thou over.   I guess that crimped brass may be more variable ??  Perhaps someone here knows..

[Frederick]

Just measured the pockets of 20 cases using a vernier guage. Very consistent at .2065 , I have already swaged the brass.

Minimum is stated as .2085 .

Measuring this way is a little crude but it looks good 😀 , maybe a little tight. Better than to loose 🙂

Will still get a pin guage , when I have got my head around it 100%

 

[Richiew]

Thanks for that info popsbengo . I’ve added it to my album of reloading info . Very useful. 
cheers