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Handloaders Sanity in the Holidays
Greetings All,
Here is something I have posted before that you might want to try on one of those wet days over the holidays when grumpiness levels are peaking. Draw a graph. I have long used graphs, like the one below, to make sense of handloading data.Attachment 265436
I was trying to make sense of the variations between two sets of data which appeared to conflict. It is quite simple. Plot the data on graph paper with the powder charge on one axis and the velocity on the other. I just used some 5mm graph paper that was on my desk. The plots are usually in a line rather than a curve. The graph showed me two things. The first was that the Nosler data is loaded hotter than the Hodgdons which I expected. The second was that my later lot of AR2209 was significantly faster then the older lots I had on hand which I did not expect. You can see where I plotted the two old lots and the new. You can also use the graph to give you an approximate load to deliver your target velocity to save the endless working up in pixie pinches of powder. My recorded velocities in my T3 are lower than the Nosler data, even with the later powder, I suspect due to the shorter barrel and partly to a tighter Nosler test barrel.
The graphs are also useful for comparing data for the older cartridges like the .303 and .30-40 which is often varied. So if you are stuck at home over the hols, with rain drumming on the roof and a forecast of worse to come, graph some of your loads and data. Feel free to ask questions.
Regards Grandpamac.
