The Aguila's are basically Mini Mags velocity at Auto Mag prices. I wish I could trade all my Federal Auto Mag boxes (1200fps) for the Aguila Super Extra Copper-Plated at 1255fps. I did just buy 10 boxes in that plan because the price per round came out to just over 5 cents a round.
Trail Boss is unobtainable. Unless you find an old jug on a shelf or at a gun show, you will likely never see it again. Wasn't all that great of a powder anyway. The ONLY thing it did well was fill the case. Other powders did everything else better.
The last couple years of the JM Marlins were pretty crappy too. Lots of hit and miss quality. So don't overly revere them just because it wears a JM stamping. Some of the Remington Marlins weren't all that bad either. The same warn out machinery was being used for all of them.
I run ALL my 9mm reloads through a 9mm Makarov die with the stem removed. It smooths all the bulges and wrinkles. And basically mimics a factory chambering. You will need a push thru stem from a Lee bullet sizing die, because you are running the round up though the die. Not just up and down...