BrokenWheel
Member
I am reloading 7.62x39 for an Arsenal AK47. I know thats blasphemy - but hey I reload for all my firearm calibers.
In the past to determine my headspacing measurement (so I can set up my resizing die and later the Giraurd trimmer) i'll take fire-formed brass from my rifle and using the Hornady's headspace adapter for my caliper, I get a measurement. From this value I'll set my resizing die. For example, when measuring the HS of my fired 223 brass they all came out within .002".
However I'm getting wildly variable results differing up to .015" from the 7.62x39. These crazy values are coming from new Laupa brass that all had the HS (I measured) prior to me shooting them.
The brass is not really banged up (I try to avoid them hitting the ground and possibly deforming).
The chamber is clean and I was shooting a mild load. Im at a loss.
In the past to determine my headspacing measurement (so I can set up my resizing die and later the Giraurd trimmer) i'll take fire-formed brass from my rifle and using the Hornady's headspace adapter for my caliper, I get a measurement. From this value I'll set my resizing die. For example, when measuring the HS of my fired 223 brass they all came out within .002".
However I'm getting wildly variable results differing up to .015" from the 7.62x39. These crazy values are coming from new Laupa brass that all had the HS (I measured) prior to me shooting them.
The brass is not really banged up (I try to avoid them hitting the ground and possibly deforming).
The chamber is clean and I was shooting a mild load. Im at a loss.