Okay, that answered my question. Darn, not the answer I wanted but that's the way it goes. Hec I was hoping for a neat little calculator somewhere that you could punch in this brand of powder in 10 grains equals this brand of powder in 9 grains.Powders are not linear. you cannot say x charge of hp38 equals y charge of power pistol. What you can do is reference your loading manuals, or online resources to compare velocity based on bullet weight.
If you are trying to copy the performance of a known load. Due to, for example not being able to find your normal powders. You can check the manuals and find powders that have similar velocity ranges to your current load Then you work your load up to to match the velocities to create the clone load.
What other powders are you working with? If it were me I would just be looking in the manuals for load data with 120g bullets, and work the load up from start using lehighs COAL.
None that I'm aware of .Is there a website that one could go to that would show for example : If Powder "A" was 10 grains, Powder "B" would be the equivalent with 8 grains.
Thank you sirChaparral,
What you do is look at a burn rate chart as gwpercle mentioned, which lists a powder (powder "B") with a similar burn rate as your powder "A". Then, you go looking for load data specific to powder "B", if it lists load data for your cartridge.
Don
even if its not the specific bullet mfg.starting load
Kind of, but it's only so accurate. You can compare loads based on pressure with the same bullet weight for various powders. I do this as a consideration when buying powder. Winchester's website will get you started in the right direction.Is there a website that one could go to that would show for example : If Powder "A" was 10 grains, Powder "B" would be the equivalent with 8 grains.
^^^^^^^ THIS^^^^^^^UncleNick said:... those charts are not comparing actual burn rates, but relative burn rates that rank the pressures produced
by a fixed charge weight of different powders in a specific cartridge with the same bullet in place.
Or, just do it the way Elmer Keith used to. Keep adding powder to the loads until the gun blows up and then back off 10%.
"Rounds" is a term that is applied to loaded cartridges. Can we assume that what you are referring to is 120-gr bullets? That's a VERY light projectile for .45 ACP, which is why you're not finding a lot of data for it. I'm surprised you found anything at all.Chaparral said:I ordered some of the Leigh 120 gr critical defense rounds for my 45 ACP.