One for the 6.5 prc loaders

Isn't the size of the bush dependent on the tolerances between the bullet, case neck, and as mentioned, the target tension ?

Given we're working in thousandths of an inch, surely this needs to be measured, to get the tension (2thou' ?) you want ?
 
Isn't the size of the bush dependent on the tolerances between the bullet, case neck, and as mentioned, the target tension ?

Given we're working in thousandths of an inch, surely this needs to be measured, to get the tension (2thou' ?) you want ?
Not forgetting elasticity
 
I just use a FL die without the expander ball and then use a mandrel to set the neck tension
Like me you measure stuff all the time and understand deflection "cut" or a spring pass lol but for people who never do this or understand how metal moves then they struggle. I made Paul a de-capping pin from silver steel cherry red dipped in oil then tempered to blue.
"best pin I have ever used" end quote lol
 
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