Superformance works great. Its available, it meters well, it usually gives you a gain in speed with less pressure signs. But if you do get up there you can reach max loads very fast. And it is temperature sensitive, no problems if you keep your rounds cool in summer, like an insulated bag if your in to some of the long range shoots. 44.7gns gave me very consistent loads and an average speed of 2750 with 147's. And I could go faster, but why change something that works.
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