We found that a few factors seem to play into the ammo mix.
Factory processing, year the ammo was made, the condition of powder, primers,,, and so on. The handling to storage of components along with over all quality / control. Then the dreaded shipping,,, some times this ammo could be frozen and cooked in some refer-van in transport. At the factory end that is.
Many of us would think that in the perfect world that all factory ammo is well looked after in the shipping department,,, but this might not be the case.
The ever changing heat cycles "could" cause moisture build up in the cartrages,,, "could" that is. All metal products are prone to sweating a little bit. One would think it dosen't take much to affect the powder charge.
Then the age of the factory ammo and the handling of it in the owners hands on top of that.
How many cold to heat cycles has each cartrage been threw till it actually makes its way to the firearm before being shot.
So under lying factors "might" play into the puzzle of extrem spread, max to min velocities.
Purhaps this might be why most factory ammo shooters buy their ammo from big bulk sporting goods stores.
It never hurts to look at the date the ammo was made on the box before buying.
We see this in the 22 rim fire ammo.
Most of the competition ammo with high scores is "normally" new with in a year and a bit.
This is not saying that some ammo that has sat idle for 5 to 7 years +++ dosen't perform to its standard.
I have some left over 22 ammo that is kinda crappy since it wasn't taken care of. Some of them barely make it out of the barrel. Ha. Pretty much ready to throw it away.
Just a thought on factors that could play into the mix.
Probably wrong thinking as normal
Don
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