Enough people have asked about this round that I decided to show what actually goes into it. It is a flame throwing thundering round. I have had an indoor range clear out around me before and even had one person ask if I was OK. They thought the gun exploded. A bit of history, the reason this round was created was to push a 9mm bullet to the velocity needed to qualify for the IPSC Major power factor of 175 in the early 90's. The short-necked and steep-shouldered cartridge holds twice the powder of a .38 Super Auto case. Basically they needed a 9mm to go fast enough to qualify for the specific power factor. The did this by necking a 10MM round down to 9MM and re-chambering their guns. Then the IPSC lowered the power factor and 38 super was again able to hit it. So the 9x25 Dillon fell by the way side. Only two companies make ammo for it and its very expensive. That left me one option if I wanted to shoot this round - make my own brass and load my own rounds. First I had to find the gun to re-chamber. A Glock 20 is a 10MM pistol and there was already a conversion barrel available for it. That was much easier than trying to have a custom barrel made for a 1911 or other gun. Then I contacted Dillon Precision and got a set of Dies so I could start forming brass and experimenting with loads. Here is the process. First off you have to take your 10MM brass and form it into the correct shape and size. This is easy enough. Lube the brass put it in the press and stroke it into the re-sizing die. Below Pre formed 10MM with lube And a stroke of the ram and it is resized to 9X25 Dillon. Now here is where I ran into an issue. That part went great, however the first time I tried to load it the bullets kept crushing the case. To remedy this I went online and found a 9MM flair die. Basically it slightly expands the case mouth to allow the bullet to seat right without crushing the case. You can see the pin that the case slides over to gently expand it below. Now the bullet sits much better in the case mouth and can be pressed into it without crushing it. Next I seat a primer in the primer pocket and pour the powder using electric powder measure. I just put in what I want and it pours, measures and beeps to let me know its done. It will also alert me if to much poured. Good when dealing with a highly volatile round. Now that the charge is poured I seat the bullet using the seating die. Shown below, it cups the bullet and guides it into the case. And finally since I flared the case to accept the bullet I use the crimp die to push the case mouth back tight against the bullet. This also holds the bullet in and stops it from sliding in or out under the recoil of shooting. Visual of the steps from start to finish. A Picture of a night time flame ball. And a video of it in action. With a bonus 460 S&W mag at the end...
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December 2016
AuthorDirt roads, getting lost, dark nights in the middle of no where and photographing adventures. Travel
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