While a .270 cartridge can be created from a necked down .30-06 brass case the .270 cartridge is actually a tad bit longer than the .30-06 case.
.30-06 - 2.494 inches (63.3 mm)
.270 - 2.540 inches (64.5 mm)
The .270 is actually a necked down .30-03 Springfield cartridge but is recommended that if you want to create a .270 cartridge, use a necked down .38 Whelen or .280 Remington case.
While none of these other calibers are considered Magnum cartridges, if you neck any of them down to a .270 and leave the case length and powder the same, shooting a smaller round, you get Magnum or Near magnum properties. Magnum is just a selling point, not a measurable thing. It's like saying Mountain Dew (Blast) or Pepsi (Max). It is just basically a statement of a more powerful or higher velocity round than something else using the same bullet or case.
I read a lengthy article about the .270 Winchester being a "Sleeper" magnum round a while back but I can't find it to reference it.
Some people will argue the fact that the .270 Winchester case is not "Belted" like other Magnum rounds and I guess they have a point. Not sure if it means anything or not.
.30-06 - 2.494 inches (63.3 mm)
.270 - 2.540 inches (64.5 mm)
The .270 is actually a necked down .30-03 Springfield cartridge but is recommended that if you want to create a .270 cartridge, use a necked down .38 Whelen or .280 Remington case.
While none of these other calibers are considered Magnum cartridges, if you neck any of them down to a .270 and leave the case length and powder the same, shooting a smaller round, you get Magnum or Near magnum properties. Magnum is just a selling point, not a measurable thing. It's like saying Mountain Dew (Blast) or Pepsi (Max). It is just basically a statement of a more powerful or higher velocity round than something else using the same bullet or case.
I read a lengthy article about the .270 Winchester being a "Sleeper" magnum round a while back but I can't find it to reference it.
Some people will argue the fact that the .270 Winchester case is not "Belted" like other Magnum rounds and I guess they have a point. Not sure if it means anything or not.
