Simple solution, when I lived in Az, I had Winter loads and Summer loads.
Novices run the same load year-round when NOT using temp-stable powders. So, run temp-stable powders or learn to load for extremes in temp swings. The solution is simple, at what velocity does your barrel tune? How far do you back off or add to a load as the temperature changes 40*-50*? The process sounds complicated, but the logic is simple. Chronograph the accuracy node, and adjust for hotter and cooler temps.
The same logic applies to barrels as the throat wears. With the throat growing in both length and dia, velocity will be lost, and accuracy will be degraded. So, add to the powder charge to get the velocity back to where the accuracy node is, and often this technique restores accuracy. As the bore wears 6-9" from the throat, and at some point, the barrel is toast.
When I lived in Az, I hunted predators with a 22/250 AI using Win 760, and big game with 7 Mag and 300 Win mag using IMR 4350 with no problems.
I wish I had a life time supply of AR Comp, R#23, and R#26...ain't going to happen
Novices run the same load year-round when NOT using temp-stable powders. So, run temp-stable powders or learn to load for extremes in temp swings. The solution is simple, at what velocity does your barrel tune? How far do you back off or add to a load as the temperature changes 40*-50*? The process sounds complicated, but the logic is simple. Chronograph the accuracy node, and adjust for hotter and cooler temps.
The same logic applies to barrels as the throat wears. With the throat growing in both length and dia, velocity will be lost, and accuracy will be degraded. So, add to the powder charge to get the velocity back to where the accuracy node is, and often this technique restores accuracy. As the bore wears 6-9" from the throat, and at some point, the barrel is toast.
When I lived in Az, I hunted predators with a 22/250 AI using Win 760, and big game with 7 Mag and 300 Win mag using IMR 4350 with no problems.
I wish I had a life time supply of AR Comp, R#23, and R#26...ain't going to happen
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