Use the recommended primer for your case. If compressed loads are experienced then use the next slowest burn rate powder, if available. If the case capacity exceeds 100% during your Quick Load calculation then be on the look out for “compressed” loads. Under maximum load conditions the case should be filled close to 100%. The case fill percentage in principle show that the slowest burning rate powder yielding the maximum case fill was selected. This velocity may not correspond with your measured velocity due to powder lot to lot differences, case volume, primers used, rifle barrel dimensional and surface condition variations etc. The start velocity is calculated from the start load. The load can be worked up gradually to safe maximum pressures from this point. This load is deemed safe for the first rounds fired in your rifle. The start load = Maximum pressure minus 25%. ![]() The start load is derived using standard Quick Load input values which were NOT calibrated for any given rifle. For your own safety, never start your load with the maximum load, always start lower and work up to it, whilst checking for pressure signs at all times.
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