Another head space question

[va_connoisseur]

Thanks for all the help. I was just confusing myself

[Mobuck]

"What happens if we make the cartridge fit the chamber with zero headspace?"

Under perfect conditions, that's great.
That's why hunting ammo often is allowed more slop than range use ammo.

[Yosemite Steve]

Mobuck, please elaborate. I hunt with my ammo.

[cw308]

I'd like to chime in . Ruger bolt action for target or hunting? Target .002 hunting .003 All Chambers are different , cases can stretch an also expand . My fired cases would get shorter from expansion. Having a longer case is easier to get the right case length. I would size the longer case down to where it has alittle resistance , that's zero case head space from bolt face to datum , then at that point you can go .001 with no resistance to what ever bump you want . Keep that zero measurement no matter what it is. Zero headspace isn't good for you bolt locking lugs , you don't want to gall the lugs. The average 308 chamber is 1.630 , get a go Gage to check your chamber , you can add shim stock to find your chamber length. Hope I helped .

Chris

[Yosemite Steve]

you don't want to gall the lugs.

That makes sense. Then add in the variable springback I can see why it goes to .002" I will try for .0005" :P