TheDomFather
Member
- Joined
- Feb 22, 2017
- Messages
- 469
Folks,
If you have seen some of my threads in the past you know I am struggling to find accuracy in my new .224 valkyrie rifle. Today I took some headspace measurements. Hornady does not yet make a modified case where I can measure OAL but today I took some of my fired and unfired cases and measured them. Here are the results:
Federal Fusion 90gr factory loads unfired headspace measurements:
1. 1.255” 2. 1.256” 3. 1.255”
Federal Fusion 90gr factory loads fired case headspace measurements:
1. 1.265” 2. 1.264 “ 3. 1.265”
Should my shoulder be moving 10 thousands after firing? This seems to be excessive to me and I am wonder if the reports of some bad chamber reamers are true and my barrel was chambered incorrectly? I have a note out to the manufacturer who has sent me a return form so they can test it as well. However I am worried they are just going to fire a few federal factory 90gr SMK through it and not take headspace measurements?
I am also seeing the same delta in headspace measurements on my reloads:
New sized cases are:
1. 1.252” 2. 1.252” 3. 1.252” 4. 1.251”
Reloads after firing:
1. 1.264” 2. 1.266” 3. 1.265” 4. 1.265” 5. 1.266”
Again we are seeing at least 10 thousands of shoulder movement after firing.
Please give me your thoughts and guidance??
Thanks,
Dom
If you have seen some of my threads in the past you know I am struggling to find accuracy in my new .224 valkyrie rifle. Today I took some headspace measurements. Hornady does not yet make a modified case where I can measure OAL but today I took some of my fired and unfired cases and measured them. Here are the results:
Federal Fusion 90gr factory loads unfired headspace measurements:
1. 1.255” 2. 1.256” 3. 1.255”
Federal Fusion 90gr factory loads fired case headspace measurements:
1. 1.265” 2. 1.264 “ 3. 1.265”
Should my shoulder be moving 10 thousands after firing? This seems to be excessive to me and I am wonder if the reports of some bad chamber reamers are true and my barrel was chambered incorrectly? I have a note out to the manufacturer who has sent me a return form so they can test it as well. However I am worried they are just going to fire a few federal factory 90gr SMK through it and not take headspace measurements?
I am also seeing the same delta in headspace measurements on my reloads:
New sized cases are:
1. 1.252” 2. 1.252” 3. 1.252” 4. 1.251”
Reloads after firing:
1. 1.264” 2. 1.266” 3. 1.265” 4. 1.265” 5. 1.266”
Again we are seeing at least 10 thousands of shoulder movement after firing.
Please give me your thoughts and guidance??
Thanks,
Dom