Fine, maybe my recollection is incorrect. I was just trying to point out that if you own two similar calibers you need to be careful to keep you ammo seperated. I found the artcile below while cruising the internet last night, so incidents can occur.

From - Firearms handling refresher
Part III: Rifles
By Massad Ayoob

Make sure you use the right ammunition. One of the NRA's "Ten Commandments of Firearms Safety" is to only carry one type of ammunition on your person so as not to get the wrong cartridge into a firearm. This can't always be done with defensive weapons. The last time I went on a raid I had .38/.357 ammo for mybackup revolver, .45 ammo for my service pistol, and 9mm ammo for my issue MP5 submachinegun. However, when hunting with high-powered rifles, it really is agood idea to only have one type of rifle ammo on your person. I don't thinkyou're going to get your revolver ammo mixed up with your .30/06 rifle ammo. Let me give you an example. At my gun club not long ago, a member was sightingin his .270 and .308 hunting rifles when he suffered a serious accident. With ammo for both rifles on the shooting bench at the one hundred-yard line, he apparently just reached out for more cartridges by feel without checking the box, and loaded .308 Winchester cartridges into his .270 Winchester rifle. You would not think a .30 caliber bullet would fit in a .27 caliber hole. However, the .270 is a "long action" cartridge, the length of a .30/06 round,and is in fact a "necked down" .30/06 in concept. The .308 Winchester cartridge, a.k.a. 7.62mm NATO, is essentially a shorter version of the .30/06 round, designed to allow "short actions." Thus, the .308 cartridge was shorter enoughin overall length that it fit in the long .270 chamber. Having the same casehead diameter, the rifle's mechanism picked it up and chambered it with no problem as the shooter thrust the bolt forward and locked it down. But, when he pressed the trigger, all hell broke loose. The .31" bullet DIDN'T fit the .27" barrel, and what would normally be 50,000 or so pounds per squareinch pressure contained in the ordnance steel firing chamber * business as usual when firing a high powered rifle * instantly skyrocketed and created catastrophic pressure. To put it simply, the gun blew up. Pieces of the strong, high-quality bolt action rifle flew everywhere, and particles of metal and burning gunpowder were driven back into the shooter's face. He had committed the cardinal sin of lowering his shooting glasses to get a better view through his telescopic sight. The result was serious eye damage.