Hi
After seeing these both cartridges drawings i can conclude that a 308 win can be chambered in a 307 win rifle. my question is how dangereous it could be if it happenes! the 308 has much higher working peressure.
regards
danny

In this country where the .308 Win is considered a military caliber, owning one carries a lot of red tape. Hence, the .307 Win (= sporting caliber sold freely) is becoming quite common as it takes only minor modifications of the extractor to convert a rifle originally chambered in .308 (and keeping it working both ways... ). Now, .307 cases are hard to come by and still those guys manage to get lots of shooting. It could be they resort to an expedient . Of course, I'm referring to bolt action rifles.

Hi Andre
I wish winchester chambered a rimmed 3006!!then you can be able to shoot a real 3006 in it in France and belgium.
regards
Danny

Danny,
while the 307 is rimmed, it's headpspaced off the shoulder.. there was a batch of "cheap" cannon/breach style pistols going around, that were cahmbered for "308 and 307"... yes, it will fit perfectly and fire... it prolly wont eject in a lever gun....

i once saw a guy with an interesting key fob... a 416 rem SPILT and ruptured... he had fired it in a 416 rigby... <beavis voice... DUMBASS> ... he hadnt read the barrel and stuck in the wrong round... ruger #1, fwiw.

jeffe

While the .307 is loaded to somewhat lower pressures than the .308, if one were to inadvertently fire a .308 in a M94 chambered for .307, I doubt if the shooter would be killed. But I would not advise doing this on purpose. However, .307 level loads could be loaded into .308 brass, and then the only question would be "does your extractor pull 'em out after shooting?".