I use Win748 for 35gr Nosler bullets in 22-250 and I would highly recommend it for that purpose. I assume 40gr would be similar.
I get 4,435fps from a 24" barrel and it's at least 2 steps below max charge. 1/2 MOA accuracy at 100, or better, rarely shot for groups but regularly killing woodchucks at 300 or better.
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Nobody plans to screw up their lives...
...they just don't plan not to.
-Andy Stanley
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