I found a a good deal last week on a Remington BDL in 35 Whelen. Good deals on guns have been really hard to find lately... It had a 70's (?) Bushnell Scopechief 4 Prismatic BDC on it. The elevation turret was missing parts, but the rest of the scope including the glass is in very good shape. The optics are actually pretty good even by todays standards. Is there a vintage scope parts depot on the web? I know e-bay is a source and I found BDCs there, but not the top cap. On another note does anyone know how to properly operate this type of ranging system?

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