making 300 BO brass question

[Rapier]

I use split necks to make my whisper brass, just do the major cut at the bottom of the shoulder and run the brass, one pass through a RCBS, FLSD, then in a 3 way cutter on a RCBS Pro Trimmer. My brass is already swaged. No annealing is ever needed. I shoot mostly 230g cast, PC with a can.

I have a steady supply of trimable brass, with the cats I shoot.

[Cgaengineer]

I use split necks to make my whisper brass, just do the major cut at the bottom of the shoulder and run the brass, one pass through a RCBS, FLSD, then in a 3 way cutter on a RCBS Pro Trimmer. My brass is already swaged. No annealing is ever needed. I shoot mostly 230g cast, PC with a can.

I have a steady supply of trimable brass, with the cats I shoot.

You notice and deposits in your can shooting PC bullets? I’m casting the Lee 220’s and am powder coating them to shoot through my Sandman L.

[Tradbowhunter]

I cut down brass to length with harbor freight saw and squirrel daddy jig. After that I chamfer mouth so not to have jagged edge going into die. I lube cases well and run them through the 300 blackout die this also deprimes them. Then trim the newly formed brass to length. I have messed with different headstamps known to have issues with this conversion and never had a problem with any of them I dont really look at head stamps anymore. My die set is Hornady. The only reason I bring this up is because a buddy of mine has a set of LEE dies and does sort through his head stamps as he has issues with some brass not chambering in his gun.

[CWME]

I run the cases through my dillion 650 with the RT1500 trimmer installed. I have a FL size die after the trimmer to pop the primer and make sure the cases are uniform. Wet tumble, dry, load on the Dillion 1050. First die in the 1050 is a Lyman M die to flair the necks a touch. Irons out any bur and helps when seating a bullet. I can crank out a couple thousand in short order between both presses.