Fine Tuning a 360 Magnum with a Brawler "Double Pumper"

jmanhoff said

So should I start with a larger TSR and say maybe a 9,5PV and go from there? I already have a 9.5 handy

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I think that’s a good step. But I’d verify your vacuum gauge is accurate because your readings sound weird. But if it were mine (and I trusted the vac gauge) I’d throw a 12.5 in that thing right away. And that’s where I’d start.