Thread: Vihtavuori n560 temp sensitivity

Anyone on here had much experience with this powder? Seems it might be fairly temp sensitive.
Did all my load development back in winter for my 280ai. Using 135gn CE er raptor pills with 61.5gn of 560. Cutting edge gave me data listing my max load at 63.4gns so I'm well below that. Didn't see any pressure signs at all back when testing at about 5-10 degree weather. Now that it's warmed up I'm popping primers clean out and leaving slight ejector marks. Accuracy is still the same. Haven't put it through the chrony again yet but thinking I should just back way off and start again? Or change powder?
TIA

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