I do it all the time, clover, peas, oats, brassicas and rye. Throw it all together. You guys are just too stuck on those picture perfect plots, and those exact planting rates. When your growing a cocktail, it doesn't matter. Throw it all together and ration as you go. If there is 3 pounds of clover spreading in one section, you'll have maybe 5 in another, the deer don't care.
When I let my rye reseed itself it could possibly be seeded at 3000/ acre. That's as high as it will get, but 1500/ acre is common. Depending on what I've initially seeded at, or how many times I've let clover reseed itself. My red clover could be putting down 200 plus pounds/ acre.
With this management, you are always covered. When I'm interseeding oats and brassiacas into my plots, it doesn't matter how even I'm seeding it. I'm always going to have a lush green field. Especially when I'm just flattening something like rye. It's gonna take more time to germinate cause it's not really contacting the soil. That gives oats the chance it needs to dominate and give the full potiental of bio mass. While the rye stays short and tender like the experts say it needs to be. Best of both worlds....