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Am I out of my mind?

I sort and group mine to .02 grains. Did another 400 or so last night. I'm not sure how crazy you have to get, but the total range in my lot of 450s goes from 3.64-3.76. And my scale measures to .02 so I may as well go to the accuracy of my equipment. There are a small handful that exceed that range. And get put in the Fowler pile. Most of mine end up between 3.66-3.70

There are several components that make up a typical boxer primer - cup, anvil, foil seal and of course the priming compound itself. It seems to me that only a measurable difference in the amount of priming compound present in each primer would affect the accuracy of an individual load - not the weight of the cup, anvil, or any foil seal. When weighing an assembled primer, how can one be sure that it is not some variation in one or more of the other components of the primer that is causing the observed weight difference? Certainly not disagreeing with this practice or your results on target but just trying to understand the idea.
 
There are several components that make up a typical boxer primer - cup, anvil, foil seal and of course the priming compound itself. It seems to me that only a measurable difference in the amount of priming compound present in each primer would affect the accuracy of an individual load - not the weight of the cup, anvil, or any foil seal. When weighing an assembled primer, how can one be sure that it is not some variation in one or more of the other components of the primer that is causing the observed weight difference? Certainly not disagreeing with this practice or your results on target but just trying to understand the idea.

Test it. I have, and because I have seen my results, I'll continue to do what I do. If you have a better way to sort primers, I'm all ears. I'll also test that theory.

I've tried everything else my way, and pulling bullets out of the box. Groups opened up.

I've tried everything else my way, and pulling primers out of the unsorted pile. Groups opened up.

I then shot with everything I do, and the group went back to what I expected. All in the same day, all in the same condition.

I'm not an expert, nor am I claiming to be, but I shoot quite a bit, and try to test things to the best of my capabilities. I also want everyone to shoot better, so I offer information based on my testing and findings. Not just because I read it somewhere.

Some loads / cartridges may not see an improvement from sorting to the degree I do, or try to. But you just can't know until you've tried it. I've learned the key in long range, is consistency at the loading bench, so that's what I attempt to do. And test everything!
 
The top two groups at 200 yards are sorted, and doing things the way I usually do it. A notable difference from my comp load, because I was fire forming.

On the bottom two, one is unsorted primers, one is unsorted bullets, still fire forming. Neither was acceptable, so I didn't document which was which. I had brass to form, so I made it useful with testing.

Your mileage may vary.


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this is what statistics and probability would tell you.
the same reason i would not do it..
.but real world testing show marked improvement at 1000 yds.
so now i weigh mine.
but you have the possibility of the odd cup/anvil/sealant being out of the norm and screwing things up.
the net benefit out weighs the occasional error.

There are several components that make up a typical boxer primer - cup, anvil, foil seal and of course the priming compound itself. It seems to me that only a measurable difference in the amount of priming compound present in each primer would affect the accuracy of an individual load - not the weight of the cup, anvil, or any foil seal. When weighing an assembled primer, how can one be sure that it is not some variation in one or more of the other components of the primer that is causing the observed weight difference? Certainly not disagreeing with this practice or your results on target but just trying to understand the idea.
 
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Reactions: kvd
I sort and group mine to .02 grains. Did another 400 or so last night. I'm not sure how crazy you have to get, but the total range in my lot of 450s goes from 3.64-3.76. And my scale measures to .02 so I may as well go to the accuracy of my equipment. There are a small handful that exceed that range. And get put in the Fowler pile. Most of mine end up between 3.66-3.70

I will never throw away another Berger box as long as I live!
 
I will never throw away another Berger box as long as I live!

They work great for sorting, plus they come with every box of bullets. They can be "static-ee", so I keep a piece of the primer sheath in there to help, at least I tell myself that. I use slightly larger tupperware containers from the dollar store for sorting bullets. They take up a little more room.
 
I have been sorting bullets a good bit on a sinclair comparator and use the plastic boxes that mushrooms and vegetables come in at the grocery store. They are light, free and stack up well and my wife saves them for me every week. They are also good for storing fired brass.
 

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