I sorted my 44 mag brass and have just loaded some rounds. I'm not sure if what I've done is safe. I have Hornady brass that is about 1.285" long and some about 1.255" long. The 1.255" long brass came from factory loaded 300gr XTP rounds. I'm trying to duplicate this load, so I'm using the 1.255" brass, and 300gr XTP bullets. My COAL is about 1.602" (some are a few .001's longer). The factory loads are 1.580". Based on my Lee manual, I loaded H110 at 18.0, 18.3, and 18.5 gr. The 1.255" brass hits about the middle of the bullet cannelure, so I "thought" everything was good. Neither my Hornady, nor Lee manuals mention using the shorter brass. The Lyman manual has this bolded caution regarding 1.255" brass (with 225gr Flex Tip): "Care should be taken so that these shorter cases are not used for standard loads as dangerous pressures could result." The other piece I'm a little worried about is that I used standard CCI primers instead of Magnum primers. Thoughts? Opinions?