Originally Posted by jskmtd
This maybe a dumb question but, how does the less case capacity of the RWS brass effect muzzle velocity (ie: more or less velocity)?
Not a dumb question at all...
If you already have a favorite load, then you put the same amount of powder into a case with smaller capacity, the pressure can be higher due to the smaller case capacity. That increase could be too much pressure and blow the rifle.
Kinda like stuffing the same amount of compressed air and fuel from a Harley's cylinder into a briggs and stratton and then light the plug. BOOM!!
The general rule of thumb is to back off the load anytime a component changes, then work back up to make sure that change doesn't causes extreme pressures. If you don't have a load yet, start at the "start" load and work up, looking for pressure signs on every round fired.