I have never glued a base mount on a receiver but I can see the purpose, In my mind the epoxy is not so much to hold the base to the receiver. It is to give the base almost 100% contact with the receiver. The bolts or more appropriately, screws hold the base on the receiver. But the epoxy gives it almost complete contact with the receiver giving it a more steady platform which will prevent movement and secure alignment. There's a certain percentage of contact without the epoxy or else all mountings would require it. But the epoxy will increase the contact area from probably 50%-70% upwards to almost 100%. Brittleness isn't so much a factor. Percentage of contact, or how much of each piece is touching the other is what is needed here. The more the base contacts the receiver the steadier the mounting will be which translates to strength and accuracy.
Last edited by Filaman; 06/19/20.
