Our due date is May 15 so we are a little bit later. We don't use scours vaccinations on the cows and haven't for years. When we used to have a "calving" pen and pasture we fought scours non-stop. Moving calving helped but it didn't fix the problem. It was only when we went to the Sandhills method of moving the heavies that we eliminated the scours issue all together. I didn't treat a single scours case this spring and it certainly wasn't because it wasn't wet. We had plenty of moisture through the calving season but because there wasn't new calves landing on dirty ground there was no problem with scours.
We still have chores to do with the blizzards that come through, but I sure do enjoy knowing that when I get my chores done I can go inside and put my feet up, drink coffee and read for the rest of the day if I want to. No more worrying about the calves dying of exposure within minutes of birth. I will quit ranching before I go back. I am a self-admitted wimp.
I am glad to hear that things worked out so well for you Big Swede. If you are anything like us you are probably setting around scratching your head trying to figure out why it took you so long to make the switch. After we started making the switch my grandpa, who was still living at the time, said that they used to calve in May, but then everyone started chasing weaning weights.