Garandimal
member
I know 2 different people the 150 ablr would not stabilize in there 270s.
Which is odd.
Because when you run it through Berger's Twist Rate Calculator:
... and deduct the tip length?
Even at Sea Level...
... w/ a MV of 2,800 fps:
The SG = 1.63 (> 1.5)
"Comfortable Stability"
GR
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