Grendel LMG

[stanc]

Make sure you use plates from the same sheet.

I'm assuming you won't want to pay for a test laboratory to assure that the different sheets have the same strength, so getting the plates from the same sheet will at least assure uniform comparisons.

A very good idea if more than one plate of a particular thickness is to be used. But, if Rick decides to shoot at only one distance, then only one plate will be needed. OTOH, if he elects to shoot at more than one distance, it'll probably require one plate each of different thicknesses.

I'm thinking that 7.62x54R lead-core FMJ should punch through 1/2" mild steel @ 100 yards, but it may be necessary to drop down to 3/8" @ 200 yards, and 1/4" @ 300 yards, in order to get full penetration.