Quote:
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The only way you can tell if your load will be good every time you shoot it is to shoot more than one group.
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You dont see the irony there?
If you want to be sure, then fire a second group, but FIVE? no way. The deer where I live dont sit around while I fire a second group, so my gun had better shoot right every time I pull the trigger.
If I fire a group and its 2+", there is no reason to ever fire that load again. If I fire two groups that are both under an inch, I might fire them both again, but I would be more likley to pick the hotter one and load a few set +/- .1-.2gr and see what happens.
Of course, in the OP's case, where he suspects something else might have been to blame (light crimps pushing bullets back) he should definitely solve the crimp problem and re-test.
In my rifles a load either shoots good or it doesnt. I have never noticed the "shoots good one day and poor the next" syndrome unless I pulled a bunch of shots the second day or it was windy, where in both cases its not the loads fault, its mine. I suppose some people are just unwilling to admit they might have just shot bad that day and look for something to blame.
I just dont buy that a given
load will shoot 1" one day and 2" the next. A shooter, yes, a load, no. If that happens, its a problem in the reloading process, the shooters technique (can be anything from flinching to trying to shoot too fast with a light barrel), or even wind if its calm one day and windy the next... Many people dont realize the impact wind can have on their groups. If you are working up a load in the wind, you are almost guaranteed erroneous results....