Has anyone made their own modified case from spent brass from their rifle? Is there someone on here that can do this for me? I watched YouTube but the guy made it on a Lethe which I don’t have access to. Thanks for any insight.
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Most cases are $6-8 cant see any value in sending in a fired case?For not too much money, you can send a fully expanded case from your chamber to Hornady and they will modify it for you.
Most cases are $6-8 cant see any value in sending in a fired case?
I see that but how much is it going matter.What you are trying to get is an accurate measurement of bolt face to where the ogive contacts the lands in your chamber. Unless the modified case has the exact same case head to shoulder dimension as a fully expanded case from your chamber, you're going to be a little off (but people have been known to say that about me ).
When using the Hornady tool, the contact points are where the ogive touches the lands and the case shoulder touches the chamber shoulder. Any difference between the modified case headspace measurement and the measurement from a fully expanded case from your chamber should be added or subtracted.
So ideally you would want a modified case shot in your rifle to get as close to shoulder angle as possible then have and adjustable "split" case where you could adjust the case to darn near "zero" then you could use the guage to find COAL...SAAMI cartridge specification is 1.4596-1.4666. The factory modified case should fall anywhere within that range.
SAAMI chamber specification is 1.4636-1.4736. Your fully expanded case should fall somewhere within that range. That leaves a range of 0.014".
In my rifles, I want to know closer than that. I want to know the exact measurement from my boltface to where the ogive touches the lands. I didn't send in any fired cases. I used the factory modified case and added the difference between headspace measurements of the modified case and my case.