Barrettmr wrote:I tried using a 223 load that has been tested and it estimated about 50fps faster and placed a warning that the load was massively over pressured. Load is 25 gr 2206h on a 55 gr soft point... Still the speed is about the same.
these types of programs can never be 100% accurate as the burn rate of the powder can change from batch to batch
also you have to find the internal volume by weighing the water in a fired in that chamber case for the program
it seemed close enough for me for those who dont have a chronograph to be able to get some ballistics for drop at distance
but you still need to real world test the drops at distance even with a chronograph reading
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