Anzio Ironworks now offers a 39 pound 20mm shoulder-fired firearm, in convenient break-down form (handy for checking in one's baggage at the airport).
That's 20mm vs. 12.7mm for a .50 BMG.
ACE suggests you wear a shoulder pad while firing this one.
Seriously, Anzio recommends reduced loads for shoulder firing. Good idea! But, doesn't that kinda water down the reason for going to a larger round?
The pickup fifth wheel/gooseneck mount might be a more practical way to go.
Back in February, an A-C-E post featured a 20mm rifle made by converting a 14.5mm rifle to accept one barrel from a 20mm Vulcan cannon. Wisely, it is fired via remote control.
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Found this message (presumably a legitimate post by an Anzio person) on a message board:
Have been meaning to post on the board for a while but we have been extra busy lately. Have gotten a bunch of calls and wanted to clarify some info floating around. The rifle we have available now will shoot and can handle full power 20mm loads (percussion primed) if you use the pintle mount. But if you want to shoulder fire it with a scope you run into some more problems. We will be working with different powder loads and different projectiles over the summer to find what works best for shoulder firing. We are in the process of buiding a test fixture for measuring the recoil of full power ammo before we let anyone try it shoulder fired(and we have actually had a number of volunteers). I just don't want to risk anyone getting injured with not so much the recoil but with the pushback sending the scope into their forehead. As test results happen will post them on the board. The muzzle brake in initial testing has proved very effective. We also have been working with a scope manufacturer to get a high magnification scope that will have more eye relief and that will be guaranteed to work on the 20mm. Will work on getting more info and pics/videos on the site over the next few weeks. Call me anytime if you have any questions, comments or suggestions.
Thanks,
Mike
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