I have five boxes of 7mm Express Remington brass. Remington cataloged the 280 Remington as the 7mm Express in 1979-80. Just wondering if it has any collectors value or if I should load them & shoot them in my 280

It has some extra value, but not a lot. The boxes are also worth something (to a box collector) but only if they are in mint, unopened, unscuffed, unfaded condition