Years ago I had a couple high-powered scopes for load development. Over the years I found that while the high power scope would let me shoot a smaller group it didn't let me develope a better load. Putting the 1-4 or 1.5-6 back on the rifle and the group opened a little. I have found that doing the load development with the low power scope usually ends up with the best load for that rifle anyway. Saving time and components.