Thread: New 223

You may need filler but I doubt it. I use a 1cm x 1cm M16 cleaning patch. If you need filler I can send you some cream of wheat.
Just work up as you would a normal load until you get a sharp shoulder. Make sure you only trim the case so that there is some resistance on closing the bolt as you will not be head spacing on the shoulder but the case neck it self. If you have primers that are popping a little you need to crush the case in a bit more or up the charge. Looking at how much brass you are displacing, it should work easy.

You may find a longer throat will allow more pressure as well. Your velocities could get up to where you want them with the heavier projectiles.

Looking forward to the finished product. Tiffo just used a standard .223 Rem reamer?