the Ishapore 2's 7.62x51

[tr63]

As a matter of interest how are you checking the Ishapore 2A / 2A1 headspace ?

I use a standard Foster NATO 7.62x51 go, no go and field gauge set , they will close on the go gauge and will not close on the no go gauge . with the field gauge in place the bolt handle only closes to 50 % . I have a British made field gauge some where in my collection ,which is now lost some where , that the bolts would close to 60 % .
I use these gauges for my l42a1 , l39a1 , and my Fal build's .