68lobo!, if you have a favorite load with the SST, you might start a 0.5 grain less and work up from there. Most reloaders are reporting pressure signs when they go past 28.0 grains of AA2200 at mag-length COALs. I use S&B once-fired brass AA2200 with CCI450 primers with the shoulder bumped back 0.003" to 0.004". I have found these bullets benefit from loading longer than mag length so I run mine 0.010" off the lands and get to put a bit more powder in to achieve s few fps more muzzle velocity. I found my accuracy node before I got to high chamber pressures.