Re: sticky bolt sometimes
#1: How sure that your powder measure is dropping 73grains? (Just asking, trying to check off things on the list)
#2: Brass from the same lot? (Inconsistant brass thickness can cause some pressure issues)
#3: Is the bolt hard to lift on round number one or round number five? Or just whenever? (Heating)
I make some of the finest writing instruments available. My favorite is the Cartridge Pen and closely followed by Fountain/Rollerballs.....