It really comes down to accuracy requirements vs. time/volume of ammo production. For plinking, throwing a good load with my QM can get right around 0.5MOA accuracy or better, as shown in the group pics above. That is with a variety of barrels, ranging from factory to top end. But if I'm going to a LR competition, I'll take the time to weigh each charge with scrutiny. Same with the BR game, the accuracy requirements are higher, and the need to produce ammo in high volumes is lower.
Interestingly, the chrono results Rick quoted above show more meaningful SD values than most. When we start to get 30-50+ shots included in an SD calculation, that increases the confidence in the sample representing the load's performance. I think most guys who claim tiny SD's based on a few shots over the chrono, would be disappointed if they kept shooting until they had 30 rounds measured and factored into the SD value.
All true. My first sentence was to address the notion that it can't be seen on a target. Most don't pursue the ultimate results for whatever reason. I dump powder all the time with a measure for various things, but I do weigh every charge for stuff that matters, like 1000 yard Benchrest. Anyone can shoot a small group, but attention to details ensures a repeat performance.
BTW, 1 grain of Varget does weigh .02 grains....
