I have a Browning 243 built on a Sako action(L579 I think). The gun was built in 1967. I can't seem to find scope bases for it. I know they were made at one time but probably discontinued. I have ordered 2 sets of bases that were supposed to fit but didn't.(Redfield 511131) The box was even marked Browning Sako 243. The rear holes line up but not the front. The hole spacing on my rifle is 3/4" center to center and the Redfield spacing is 7/8" center to center. These measurements are for the front mount holes. The rear holes are 1/2" center to center. Can anyone help me find the right bases? Thanks