Dillon has brought out a new trimmer, the RT1500 at Shot show to deal with the 300 blackout forming. The trimmer is pricey, $300.00 or so, plus the trimmer die.
https://www.youtube.com/watch?v=lJV80dCU9pc
http://www.brianenos.com/forums/inde...owtopic=188656
GSI is making the tool head and trimmer dies for progressive use.
http://www.gsiinternational.com/300-...4244_8645.html
This might be out of your price range though.