My notes on low ES, in order.
1. Sort bullets by baring surface.
2. Sort bullets by forward baring surface to base.
3. Get consistant case volume, I do this by taking once fired cases, trimmed to length, prepped and weigh them.
4. Use a bushing sizing die with the right neck tension.
5. Graphite powder the inside of the neck of the case.
6. After seating the bullet set all bullets to the same length based on the OAL from the forward baring surface to the base of the case. This will give you more consistant effective case volume and jump to the lands.
7. Experiment with load variables, powders and primer combos. Hogden Extreame powder seem to be better about this. Certain primer powder combos also seem to work better together.
8. If you get in the low teens and or single digits be happy don't strive for a goal that makes no practical difference. At 10-15 fps ES most people will never see a difference in the performance vs. 7 or 8 fps ES.
9. Your shooting an Edge - H1000, CCI 250, 300 SMK's and follow the above you'll be a happy guy.
I have to politely disagree on some of the above points. Es and/or standard deviation is most easily affected by powder type and the amount used. This accounts for 90% of either a bad or good deviation. All the other stuff you mentioned has some effect but all combined makes up the last 10%.
Here's my proof:
I mess with this stuff for a living and I can tell you that I can take un-prepped cases, un-measured bullets, dry necks, bad seating dies, and any other manner of garbage and still produce good deviations with the right powder and charge. It may not be the best and will surely improve if all the other stuff is done to the equation, but satisfactory results can be achieved. (We are of course talking about velocity uniformity strictly here and not at all about accuracy.)On the flip side of that coin, you can have perfect brass, perfect bullets, perfect dies, exactly matching case volumes and still produce horrible standard deviations.
The key to a low standard deviation is powder, powder, powder and how much you are using of it. Primers can change things as well, but if you're going to change primers, you could have just as easily changed powders and you're still going to be back at square one.
And the comment about Hodgdon usually giving smaller SD's: I have never seen that at all. Nothing even remotely like it. I can and have gotten sd's in the 50's with just about all the Hodgdon powders and as frequently as any other brand. If your gun likes Hodgdon, use it. If it doesn't, don't beat your head against the wall trying to MAKE it like it. Just try another powder and almost like magic the numbers can improve.
Also, a good load that has a standard deviation of 6 or 7 fps will probably be more likely to keep those numbers throughout the aggregate than a load that has 15 fps. So try to get sd's down as low as possible. If you can't get them any better than 15, don't give up on it entirely. Just go check for group size at long range and you might just be surprised.
An SD of 6 or 7 just shows me that there is a good node there and I'm on the right track with my powder choice.
If you're just shooting out to 300 yards or thereabouts, you can just pick a load that has good accuracy and forget the numbers if you like but I can't do that. I want my ammo good for every situation close and far. And good numbers still show you what the map says for finding an accuracy node anyway.