scope mount&ring, Steel v.s. Aluminum?

I had bought a copy of the springfield 3rd generation mount and I found that there was a lot of flex in it. You could press on the scope and it would move. I found that my groups were tighter with the irons than with an aluminum scope mount so I ditched it.
 
Weight & strength are the primary differences, steel being stronger but heavier. Also when fired, the repeated rearward concussion of the firearm tends to peen and slop aluminum mounts on a steel receiver much faster than a steel mount on a steel receiver. Steel obviously tends to rust, aluminum corrodes.
 
It also depends on the type of Aluminum used. There are many types some as hard as steel. Cheap aluminum is just that though.
 
rooster33 said:
Also they have different expantion rates with temperature change. And aluminum crystalizes and hardens when bent repitedly same as titanium.
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You bet, and I have noticed when you use aluminum on a steel receiver, because of the different coefficients of expansion/contraction between two dissimilar metals, the aluminum mounts tend to loosen off a bit in extreme cold because of the different rates of metal contraction.
 
suprathepeg said:
It also depends on the type of Aluminum used. There are many types some as hard as steel. Cheap aluminum is just that though.
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Ya sure, some aluminum can be made as hard as some steel but some steel can be made harder than any aluminum. IMO steel is still the best for a steel receiver and likewise good hard aluminum is best on an aluminum base or receiver.
 
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