WWII 3 Inch M5 Anti-Tank Gun

[JoshIronshaft]

As soon as I have convinced myself that the T116/M79C direct fire sight is rare I find a better one than the one I have on ebay.



This one has the original eye cup/boot and it has the crosshairs in it, so this is an upgrade.

The glass is really dirty.

Does anyone have tips for cleaning old optics? I might have to take this one apart to clean the glass inside.

[JoshIronshaft]

The ultimate tractor attachment:



Videos of test firing blanks using 1 lb of black powder in an anti-static bag, nothing else:

https://imgur.com/F3bNf2Q

https://imgur.com/FNIFtk5

https://imgur.com/QhSwWxS

https://imgur.com/WUy4aWB

I had planned on cutting down cheap 3"/50 Navy cases but they are just a hair too big in every way. I cut one down and even the very bottom of the case wouldn't fit in the chamber. So instead, I am using cut down steel 76mm T19E1B1 cases for the T124 gun. These cases were already damaged at the mouth and a good price so no tears were shed cutting them down. These used a thread in primer so I had adapters machined to accept the press in primer assemblies. The primer assembly uses a 50 BMG primer and a gas check. No primer tube. The 50 BMG primer has enough heat to puncture the bag and ignite the black powder. To reload the primer in these blank cases I use a long punch to knock the primer and gas check out of the bottom, then use my large arbor press to push everything back in. I have seen others make a hand press tool to do this in the field so I will have to make one of those.







Next test will be sending a projectile down range.

[Emptymag]

Oh my goodness!
I'm calling the authorities!

[olderguy]

Little bit of overkill, even for the 8 point buck that frequents my backyard.

[GOYABEAN]

The ultimate tractor attachment:



Videos of test firing blanks using 1 lb of black powder in an anti-static bag, nothing else:

https://imgur.com/F3bNf2Q

https://imgur.com/FNIFtk5

https://imgur.com/QhSwWxS

https://imgur.com/WUy4aWB

I had planned on cutting down cheap 3"/50 Navy cases but they are just a hair too big in every way. I cut one down and even the very bottom of the case wouldn't fit in the chamber. So instead, I am using cut down steel 76mm T19E1B1 cases for the T124 gun. These cases were already damaged at the mouth and a good price so no tears were shed cutting them down. These used a thread in primer so I had adapters machined to accept the press in primer assemblies. The primer assembly uses a 50 BMG primer and a gas check. No primer tube. The 50 BMG primer has enough heat to puncture the bag and ignite the black powder. To reload the primer in these blank cases I use a long punch to knock the primer and gas check out of the bottom, then use my large arbor press to push everything back in. I have seen others make a hand press tool to do this in the field so I will have to make one of those.







Next test will be sending a projectile down range.

OUTSTANDING flag.gif

[Curmudgeon]

I have the strangest boner right now

[Walleye Hunter]

It is very nice. Great job.

[bogey1]

I'll take 3.

[ImminentDanger]

I know I saw that Wabbit somewhere around here!!!

What a great project and your efforts are to be commended! Live History is so much more exciting than only book learning.
Kudos for preserving that bit of history and taking it to shows where others can appreciate your efforts.

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