I have used Talley LW on 3 rifles of my own and 2 for a friend and never had a problem with cracking.I've read posts that the Talley lightweights ring mounts can crack.
They are made in the UM shop….Idaho, I think.6061 is vastly inferior to 7075 aluminum and that's why all the chinesium parts and brands selling to the lowest price point use it. A lot of good domestic manufacturers have been mentioned already. I'll add Warne to that list.
Don't agree with this broad statement, at least for quality American made parts from 6061, such as Hawkins Precision. While it's true that 7075 is a stronger alloy, it doesn't mean that quality 6061 is not sufficient.6061 is vastly inferior to 7075 aluminum and that's why all the chinesium parts and brands selling to the lowest price point use it. A lot of good domestic manufacturers have been mentioned already. I'll add Warne to that list.