2nd guessing...280rem brass sized for 7x64?
- Thread starter Hitzy
- Start date
This is from another forum talking about loading for the 7x64 using 280 Rem data.
"I used, mainly, reformed .280 Rem brass! I got 6 boxes of virgin brass, a rarity here in Argentina, so I used them with entirely satisfactory results. Just a pass by the 7x64 die, trim the slightly longer neck of the .280 and use it as an original 7x64 brass!
I also used virgin or once fired and annealed .30-06 cases. Also, just a pass througt the 7x64 die, load it and go hunting or shooting. Those "7x64/30-06" came from the die with a kind of a double shoulder. But nothing to worry about. After firing them with a 7x64 normal or maximum safe loads, they came perfectly "ironed" to a standard 7x64 case shape."
"I used, mainly, reformed .280 Rem brass! I got 6 boxes of virgin brass, a rarity here in Argentina, so I used them with entirely satisfactory results. Just a pass by the 7x64 die, trim the slightly longer neck of the .280 and use it as an original 7x64 brass!
I also used virgin or once fired and annealed .30-06 cases. Also, just a pass througt the 7x64 die, load it and go hunting or shooting. Those "7x64/30-06" came from the die with a kind of a double shoulder. But nothing to worry about. After firing them with a 7x64 normal or maximum safe loads, they came perfectly "ironed" to a standard 7x64 case shape."
I've done the 280rem (1F so slightly larger then factory brass) a few times to see how well it would work. Found the primers backed out a fair bit but they were light loads, so I was 2nd guessing if I was creating a headspace issue or not. I'll play around with it some more and see if I can get a better initial fit.
If your primers are backing out that indicates excessive case head clearance of the loaded round. The actual headspace of the rifle may be correct. It can only be measured with steel headspace gauges. Any time you are "measuring" with brass cases you are measuring case head clearance, not headspace.
I would neck those cases up to a larger caliber, then size them so you can feel the bolt close on the false shoulder you created. Those cases will fire form ending up with the strongest brass this way.
