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Update,

Testing was started at 54 and ended at around 58

Max velocity was around 2800 so we at least have a useful speed range to find some accuracy with (hopefully)

Thanks everyone.

Um, when I say starting point I'm referring to charge weight.

There are several powders that will do the job however he has 560 and wishes to use that. Just need a starting charge weight and can...

Sika will be the main target, Hoping to get 2700 which I think it should easily do.

Just looking for a starting point.

My brother has recently picked up a 280 and is keen to get a load for 168 bergers.

As usual at the moment our options are limited and is looking to try with N560.

Has anyone got experience with...