Interesting one superformance, i spent some time with it in my creedmoor & ended up with wrecked lapua brass in the long run. Ive found RL26 to be better in the creedmoor, i can get to the same speed with RL26 but without the peak pressure. GRT Shows it too, Same velocity but superformance overpressure when RL26 is just on the limit.
Superformance
RL26
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