I've got a Savage long action that has quite a large gap between the rings, so I'm going to install a one piece slotted mount. The two options are a $90 steel unit, and a $12 aluminum one. It's a .338 magnum, which makes me a little uneasy about the aluminum mount. At the same time, however, I keep thinking that if aluminum weren't strong enough, they wouldn't make scopes out of it... Any input would be appreciated.