Hello all. New member from SD, lurked here for a while. Recently picked up a Rem 700 in 300 RUM that had been blue printed, bedded into an HS Precision stock, wearing a threaded Krieger stainless match barrel (bright and shiny bore), and 5 mags. The kicker is that the barrel is only 22", which I know is way shorter than ideal It had sat at the gunshop for a while and was priced well enough for me to take a chance on. Wondering if anyone has experience loading shorter barreled ultra mags? I'm guessing I'm stuck with faster burning powders and probably lighter bullets? Im not really interested in rebelling it until the bore is shot out. FWIW it'll probably be limited to targets, maybe the occasional deer hunt. Thanks in advance.