I may well be wrong but I am betting the -oak ply wood only has oak as one decorative veneer on one side of the sheet. Any dense wood like ply wood is going to deform a pistol round well. Paraply in 3/4 is tuff stuff. It is basically 2 sheets of 3/4 run thru a steam heated press so the 2 are only 3/4 when finished. One heavy sheet of ply...
Brent
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