Lee's trimming tools are not a bad way to start out. They work well and worst case minimize your expenses until you learn how you'd really want to do it. You insert a cartridge-specific rod into a cutting head, put the case in a caseholder, insert the rod into the case and spin the cutter . . . either by hand or by drill.
There are some very good trimmers that index off the case shoulder . . . they are made by Giraud. I have the original World's Finest Trimmer in 223, and was not happy with adjusting the length nor with the cleanliness of the cut nor with the fact that I had to hold each case against the cutter's torque. It got harder each year. Unfortunately I don't think the Giraud Tri-Way is made in your caliber, but if it is It's a good choice. The Giraud Power Trimmer is a $460 base-cost item that includes the motor; a terrific trimmer but likely overkill for your useage.
After those two trimmers, my old hands just couldn't take it any more. And after trimming there was more case prep to do, again holding the case. So I bought a RCBS Universal Case Prep Center. I don't hold the case while trimming, and the other case prep operations are done (holding the case) while the next case is trimming.
The universal case holder doesn't use a shellholder, so they stay with the dies where they belong. The micrometer length adjustment works very well, giving easy choice of lengths. The cutter requires deburr and chamfer; I have the RCBS 3-way cutters but was not satsified with the way they chamfered/deburred . . . YMMV.
