I'm working on load development for a .25 Gibbs, started with max .25/06 data and H1000 using 100grn Sierra Gamekings. I'm getting a little spooky with charges but haven't experienced any pressure signs as of yet. Case holds 74 grains of H2O. Any chance someone has experience with this or could run the numbers through QL? Highest chronographed velocity so far is 3,350 with 65.5 grains and CCI 250. Thanks in advance guys,
While I can get QL to just about duplicate SML I don't find it particularly accurate in regard to CF. It's just a tool to get you started. Measure case head expansion to gauge pressure as it is the most reliable way to know you are about to get into trouble. Primers (especially soft Fed primers ) are good indicators because they will flatten and flow quicker than some others. The down side to using Federal primers is they are larger than others so you might not notice loose primer pockets as quickly when other primers wouldn't stay put.