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Over the past few years I conducted 83 ten shot tests using the PressureTrace II system. Recently I decided to try and open up a comparison chart using overlays in the Gimp editing software and make some videos out of them..

It is not the best but I think it is certainly good enough for discussions.

It took me a while to satisfy myself as to the accuracy, but with the discovery of a few missing links, in general, everything is 100% consistent with reloading manuals and factory ammunition.

Rather than do one video at a time, once or so a week, I decided to dump a few all at one time. Check the website link below for updates.

44-40 Pressure Test Video Website Page

I also use the Pressure Trace II system and have it very helpful.

Ed Harris' 230gr 43-230G has been added to the new Reloder 7 230gr/240gr video...probably the best performing of the group.

I personally used a Hornady SWC HP for hunting but never tested it.

https://sites.google.com/view/44win...n/pressure-testing/pressure-trace-videos

All eight videos have been added

Thank you for sharing.

I wish there was a Pressrtrace Forum somewhere

The 44-40 Google Docs "Pressure" Page has been updated to reflect the 3 new tests 1A, 2A&2B (re-tests for "control"), and test 90. I also updated a few other items by including the 1917 WRA data and highlighting Lyman's max loads that were previously tested. I will update other items as well as dates etc. the week of the 20th.

44-40 Chamber Pressure Test Results Update

There is just too much information for me to repost it all here, especially since there is only a link for photographs.

For those that are somewhat following the progress, I have updated the Pressure Testing page of the 44-40 website with a large selection of test result charts to compare.

The test results prove that early smokeless powders used by Winchester produced less pressures than original black powder loads. They also prove that the 44-40 ballistics was greatly reduced by the 1970's.

Black powders of today create less pressure than those of the originals and sends the wrong message about pressure comparisons for modern smokeless loads.

I have created a "https://sites.google.com/view/44winchester/chasing-the-44-40/handloading-introduction/pressure-testing" for those interested.

I have also updated the 44-40 google docs pages with the "https://docs.google.com/spreadsheets/d/1cZyKKXVyHq9as9uFJiko5yReJ9a-ER32YsENTgJGJs4/edit#gid=1978356941", also for those interested in understanding the myths of this cartridge's performance of yesteryear vs today.

If you visit the google docs page, make sure you look at all of the data by select all of the tabs at the bottom of the chart window.

The last 13 test result charts have been added to the 44-40 Pressure Testing page.
44-40 Pressure Timeline

I appreciate the effort you've put into this.

Thanks, wish I could do better!!

I tried making some gifs, give them some time to load




Charts