Greetings,
The Superformance powder you can buy is not the same stuff that is in the .270 Superformance ammo. It is a little faster. The lack of loading data is because the powder is not ideal for the .270 and does not give top velocities. This is why Hodgdon does not list loads for it. H1000 (AR2217) would be a better bet with the 140 grain if you can find any. H4350 (AR2209) gives decent velocities with the 130 grain. 2,700 fps seems awfully slow even with an 18' barrel. What was your top load of AR2209 with that and how old is your powder. Earlier batches of AR2209 were slower in my experience.
Regards Grandpamac.
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