[saskbooknut]

I searched Google for Pattern Control wad data - Google images came up with the photocopy page of Pattern Control Data that used to be supplied with the wads.
I found a bag of PC Post wads that I wanted data for..
The white wad was a Winchester AA12 substitute. It says Win length on the bag, I believe.

 

[Seitz 555]

Really liked old/new PC wads. Shot some of my best singles scores with them. Took side cutters and cut the post off the white ones some time ago because I couldn't get the red ones.

 

[ashwood]

MEC Outdoors offers three types of "white" wads. Made for them by an outside vendor. Maybe yours will match one of these and you can work backwards from there. Double check yours are not degraded (brittle...). I am sure you find some reloading data to use for your wads.

 

[Curly N]

MEC Outdoors offers three types of "white" wads. Made for them by an outside vendor. Maybe yours will match one of these and you can work backwards from there. Double check yours are not degraded (brittle...). I am sure you find some reloading data to use for your wads.
View attachment 1744869
View attachment 1744870
View attachment 1744871

Outside vendor = Downrange

 

[acorange]

I have seen the PC wads made in white as a short wad for the old Rem. All Americans and the AA clone wad with and with out the spreader post. Later the Red PC wads were the AA style 1&1/8 oz. wad and the purple PC wad was the 1oz. Then Downrange bought them out, made them for a short while and now they are discontinued at least in the 12 gauge.
Which length do you have? Are they the same length as a AA or CB-1118 wad? I have a very large sheet with LOTS of powder/hull combinations from PC.
PM me with your address and I can send you a copy. It is 2 sided and I do not think a photo would work very well.
I LOVE these wads in the AA hull with WST powder and am always on the lookout for these wads to buy.