As I mentioned earlier, after I dispense a charge with my Chargemaster I weigh it on a Gem Pro 250 and fine tune the charge as necessary, usually adding or subtracting a few kernels of Varget. Then I put the powder in the case. One kernel of Varget changes my weight by .02gr which is same as the resolution of the Gem Pro.
The base accuracy of the Chargemaster is advertised as plus or minus .1gr; i.e. 5 kernels of Varget. I did a bit more fine tuning of my Chargemaster and made a test of 20 charges using my new brass insert.
Of the twenty, six of them were right on the desired charge of 26.20 grains. Six were within 2 kernels and the other eight were within 1 kernel.
It is clear to me that the brass insert really does improve the ability of the Chargemaster to produce charges significantly closer to the desired weight. For all but the most fussy target shooters, it seems to me that loading directly from the Chargemaster (using the brass insert) would be sufficient.
For we who insist on more charge weight precision, it pays off by hitting essentially every charge close enough so that adjusting by one or two kernels with tweezers will do the trick.
The base accuracy of the Chargemaster is advertised as plus or minus .1gr; i.e. 5 kernels of Varget. I did a bit more fine tuning of my Chargemaster and made a test of 20 charges using my new brass insert.
Of the twenty, six of them were right on the desired charge of 26.20 grains. Six were within 2 kernels and the other eight were within 1 kernel.
It is clear to me that the brass insert really does improve the ability of the Chargemaster to produce charges significantly closer to the desired weight. For all but the most fussy target shooters, it seems to me that loading directly from the Chargemaster (using the brass insert) would be sufficient.
For we who insist on more charge weight precision, it pays off by hitting essentially every charge close enough so that adjusting by one or two kernels with tweezers will do the trick.
