Lee 309-170F: Possible for 300BO?

[VariableRecall]

I intend only for this magazine to be used for 300 BO, as it is separate in manufacturer from the others, so that I can have an easier time distinguishing them. If I have feeding issues, I’ll give the file trick a try.

[popper]

I use a 170Pb & 185GC coated cast in my BO AR, feed fine and have a much larger meplat than the LEE. I do use Lancer BO mags as the magpul 223 will hang once in a while. Mold design is my modified ranch dog for 30/30.

[imashooter2]

I went with translucent gray Lancers for 300 BLK myself. Very visibly different than my solid black .223 mags and no stacking issues with any bullet at any length.