I do not think you can get an A&B barrel any where but Midway USA. You can get inexpensive barrels from ER Shaw. They cost $155 for Chrome Moly in the white, or a SS for $225. Of course that is more expensive than an A&B barrel; the good news is you can get a profile to your liking and you will not have to wait until August to get it, but being custom ordered you will have to wait a little while. I ordered a custom Savage barrel from Shilen and it took 4 months. You could look at other cartridges like a 7-08 or a 280 Remington, both are close to the old Mauser - but not the same, if you must have the 7mm Mauser. I am seriously considering a long action 7-08; a conversion from a 30-06. I should be able to stick those long bullets out there a ways with out hanging up in the magazine. Good Luck and Good Shooting