By the way, on blackening the post 64 receiver, for anyone who needs/plans to do that....
The Du-Lite group are posting that they HAVE a successful recipe of their products to do that now.

Here is what they are posting:
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Du-Lite’s Process for Blackening Post ’64 Receivers
Du-Lite has developed a process that will blacken these receivers. Once blackened, these receivers will not turn red or discolor.

The Black Oxide Process for Winchester Post ’64 Receiver

Du-Lite #45 Cleaner, (12 oz/gal.) 150°-160° temp. for 10 min.
Warm water rinse – 150° temp.
50/50 HCL acid (muriatic acid) w/water, room temp. for 2-3 min.
Cold water rinse.
Aldak #30, (3-4 lbs/gal.), 220°-230° temp. for 20 min.
Cold water rinse.
Du-Lite 3-0 Bath (4½-5 lbs/gal), 240°-250° temp. for 20-30 min.
Cold water rinse.
Du-Lite Kwikseal or Kwikseal A, straight, room temp., 1 min.

Cheers,

Crab


“Even if you’re on the right track, you’ll get run over if you just sit there.â€
--- Will Rogers