http://www.smithenterprise.com/spec/Rings_WEDM_0.50_BMG.pdfhttp://www.brownells.com/.aspx/pid=26094/Product/7003_BMG_TACTICAL_RINGSMy scope rings from Smith Enterprises arrived yesterday, and I was totally impressed with the ruggedness and quality of these rings! To put it mildly, these are the absolute strongest rings I've ever come across.
They are the only rings that are manufactured by the wire EDM process. This process allows the rings to be machined to extremely close tolerances without inducing any stress what so ever into the material. Most milled rings require thermal stress relieving to achieve this.
Wire EDM machining takes time, lots of it. To manufacture this type of shape in this type of material, (4130 steel), to these tolerances takes several hours, hence the high cost. One thing that I was surprised about was the rings were shipped with a matching set of double flanged, 1" split inserts. This allows the mounting of 1" tube scopes as well as 30 MM models without having to purchase any type of ring reducers. A really nice feature. If you are looking for the toughest, strongest rings money can buy, these are it! I'll post some pics when I get everything mounted up on my new Bushmaster BA-50 today. I have to pick up an inch pounds torque wrench this morning. I want to mount these things properly. Bill T.