Wen u reload Mil brass like LC you have to keep in mind that the case walls are a tad thicker so the same pweder charges in those compared to lets say winchester cases are going to be higher, so BE CAREFUL. Whats safe on Win hornady and Rem cases may not be safe in mil brass
This is an oft repeated myth based on hearsay, and conjecture, that has in fact, been debunked in this thread and others - see my post on this topic. While this is true for 308, it is NOT true for 223 - LC are not materially and consistently any less volume than commercial. In fact the opposite may be true in many cases: see the chart and look for LC06 - they held the most.
As some one else said, "Be wary of those who want to tell you what they think they know. They may NOT."
And we use English language spelling here, not texting-child phonics.