Originally Posted by winmagman
I need a little advice on where to headspace a .243 on a Savage action that I'm putting together for my sons to shoot. I've done 3 other barrel installs on Savages so this isn't completely new to me , but I usually just use a case since the other 3 are wildcats or never see factory ammo.
This time I will be using a Go Guage since this one may have some factory rounds put through it. So what I need to know is, would you just turn the barrel in until it hits the guage and trust that tightening down the barrel nut gives you enough headspace? Or shim the back of the guage, and if so how much, then tighten down the barrel and barrel nut?
Thanks for your input.
With the savage action , use a go gauge and just snug the barrel against the gauge (Do not
tighten) as you tighten the barrel nut it will loosen the headspace just a little. when you are
though tightening the nut you can check it buy placing a .001, .002 , and a .003 thousandths
shim behind the go gauge with a touch of grease to hold it to the gauge.
When it wont close on a shim with out pressure it is head spaced the size down from the one
that it doesn't want to close on .( The thickest it will close on with out forcing it).
It should end up between .001 and .002 thousandths.
If you use a factory round it can end up to tight or lose because factory ammo varies up to
.010 to .012 thousandths in length.
Use a head space gauge and make it right.
PS; some use scotch tape with good results but if you are not use to doing it this way the tape
will compress and give you false results.
J E CUSTOM