I like Lapua and Eley, but SK and Wolf are popular for a reason. You really can't go wrong with any of those 4. I shot my personal best group using Lapua Midas +.

As far as the weighing and measuring...from what I understand, the idea isn't to get it near a "standard", it's to get a batch of rounds that are reasonably close to each other. I still don't buy the weight idea...there's enough of a variation in charge weight, brass, primer, etc to mean that two rounds that weigh the same may not be made up of exactly the same weights of the components. In other words, it's the same as saying 2+2 is 4, but so is 3+1, 4+0, etc.

I *do* buy the rim thickness idea, and I like the chances of your method. I own a pair of digital calipers that I should probably start using to measure my rims...I'm just not consistent enough yet IMO to warrant being this picky. Yet.