ZG47
AH fanatic
- Joined
- Jan 20, 2015
- Messages
- 899
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- 1,140
- Location
- Wellington, New Zealand
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- Hunted
- New Zealand
I do my neck expansion with Lyman dies. Too much case stretching and trimming otherwise. If you have the Hornady full length resizing die with Zip spindle you need to fit a smaller expanding button because the decapping pin is headed and is held in by the button BUT typically you can just remove the button from your resizing die.
Standard test for resized cases is to remove the striker assembly from the breechbolt and chamber a case. Slight resistance as you close the bolt is good because it indicates correct resizing for that rifle chamber.
Repeat the test with loaded rounds (again with striker assembly removed) to avoid issues at the range and in the field.
The biggest issue with tight chambering is when a jacketed bullet jams in the rifling. That is a situation to avoid because it will increase pressure AND may result in a missed opportunity if you open the breechbolt to extract the round and the bullet stays in the barrel.
Standard test for resized cases is to remove the striker assembly from the breechbolt and chamber a case. Slight resistance as you close the bolt is good because it indicates correct resizing for that rifle chamber.
Repeat the test with loaded rounds (again with striker assembly removed) to avoid issues at the range and in the field.
The biggest issue with tight chambering is when a jacketed bullet jams in the rifling. That is a situation to avoid because it will increase pressure AND may result in a missed opportunity if you open the breechbolt to extract the round and the bullet stays in the barrel.
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