02-11-2020, 05:53 PM
LR1955 Wrote:Gk45:
With 2520 some documents say the velocity changes one fps per one degree F of powder (not air) change.
One minute is about 50 feet per second. So one minute is a powder temp change of 50 degrees F.
And you shot five minutes low at 200 yards. Which equals about a 250 degree difference in powder temp.
Something tells me that your shooting five minutes low at 200 was not due to changes in powder temp.
LR55
I have to agree here. Those that are seeing more than 2" difference in POI at 200 aren't getting that result because of powder temp sensitivity. There's something else going on.
8" at 100 isn't even believable...
Nothing kills the incentive of men faster than a healthy sense of entitlement. Nothing kills entitlement faster than a healthy sense of achievement.