Those are far from "bad" numbers and as stated multiple series or longer strings will tell more. I have seen instances where higher ES and SD yielded better groups than ones closer togethter. Not saying it is the norm but can happen. I wouldn't get too hung up on it as long as they are on the lower end and in many cases IMO, you can find the sweet spot when incremental increases in powder levels stop yielding average or expected increases in velocity. So as an example if velocites have been increasing by say ~75-100 FPS for each 1 grain or 1/2 grain increase in powder and your are close to upper end load and all of the sudden velos on increase by 35 FPS, then I normally see ES and SD increase as well and maybe start to see pressure signs. Just my experience and YMMV.
I am certain someone else will have varying experiences and opinions.
