Quote:
Originally Posted by Engineer1911
Lead bullets
Maximum powder charges
Once a mid-range load is tested, the powder charge can be increased in 2% or 0.5 grain intervals and fired for accuracy, pressure signs, and velocity. A chronograph is important for max load development. Shooting several boxes of mid-range loads before doing max load development is prudent. Starting loads are safer and far more forgiving than max loads for the new reloader.
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And when I get close to the top end load,I like to increase the charge only in 0.2gr increments.I've found that developping a load during wintertime when the temperature is in the '30s will raise its pressure in a measurable way when said loads are shot during summertime in the high '80s.
In the case of my favorite caliber(.44Mag),it makes the difference between nice vs flattened primers.It should be even more significant in the case of smaller calibers(i.e..357Mag).
Qc