270 load in 20 7/8" barrel Sako 75
130gn Sierra Gamekings
RP brass neck sized
Fed Match primers
Warmish load of ADI 2213sc 61.5gn
OAL to fit mag (71.90mm)
Chrony results
Summer:
3130
3170
3123
Winter:
2989
2933
2919
2969
2949
So quite a difference.
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