Quick update for everyone- less than a day after posting a video and article describing some dangerous looking pressure signs with 44 Magnum, you all helped me track down the problem with help from my iGaging 400x WiFi microscope!
You’ll want to read my previous story to get a complete run-down on the issues I was seeing with my 44 Magnum loads, kind of scary!
The Culprit: Bad Primers
In my investigation, I had ruled out the following:
- Overcharge / over-velocity
- Bullet seating depth
- Bullet diameter/mis-match
- Oversize primer pocket
- Wrong primer
And it was two emails from Ultimate Reloader subscribers (minutes apart) that helped resolve the issue. From reader #1:
First: Please do not expose my name. In my case it was WLR primers. The reason for blowout, was a crack in the primer cup. Se pictures.
And here’s the picture that reader #1 sent:
Does the primer on the left-hand side look familiar (see my image above)? My cracks were not that large, they were hard to see by the naked eye, but it’s clear that the same thing was going on.
Reader #2 did not send images, but shared the same result!
This is where my iGaging microscope came in handy- I did not see any cracks when looking with the naked eye, but all that changed at 400x magnification. Here’s a picture of the complete setup:
In case you are interested in this microscope, you can check it out here: https://ebay.to/2BJfeTX
So it is now solved! I can now resume loading the original load, and not worry about these issues as long as I use the right primers. I’ll be reaching out to Winchester to find out more about this issue. Thanks again everyone!
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