I've been working on assembling a collection of the blue & yellow boxes of Western Super-X shells. When the blue & Yellow boxes were introduced circa 1940 the chilled shot Load Numbers were prefaced with an S and Lubaloy shot loads and the 3-inch 12-gauge loads which came in the higher brass RECORD case were prefaced with a P. The shells featured a rolled crimp, the traditional Western knurled canular on the brass and the Seal-Tite wads --
Seal-Tite Wad.JPG
the traditional Western knurled canular on the brass, and a rolled crimp.
Super-X 10-gauge, 2 7-8 inch, S14 load flap.jpeg
Super-X 10-gauge, 2 7-8 inch, S14, front.jpeg
Super-X 10-gauge, 2 7-8 inch, S14, knurled canular.jpeg
By 1948 Western was transitioning to the Super-Seal Crimp, plain ringed canular and the Super-Seal Cup Wads --
1952 Super-X ad.jpg
in the 10- to 28-gauge shells.
In 1953 Western changed their load numbers. From then on the chilled shot loads were prefaced with SX and the Lubaloy shot loads were prefaced with an L.
However, so far the only 2 7/8 inch 10-gauge boxes I've found with the SX load number still have the rolled-crimp and the Seal-Tite wads, but the new style canular --
Super-X 10-gauge, 2 7-8 inch, SX10 load flap.jpeg
Super-X 10-gauge, 2 7-8 inch, SX10, front Seal-Tite Wads.jpeg
Super-X 10-gauge, 2 7-8 inch, SX10, new style canular.jpeg
Do any of you have a blue & yellow box of Super-X 2 7/8 inch 10-gauge shells with the Super-Seal Crimp and the Super-Seal Cup Wads? They made the change on the 3 1/2 inch Magnum 10s. By the time they were into the plastic shells in the white boxes with the red Super-X logo the 2 7/8 inch 10 had the cup wads and the pie crimp.