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This is probably the best thread I have seen in my 5 years as a registered member.
Its last almost half as long as my membership! Ed - Outstanding work! Thanks for sharing this ongoing work with us. PLEASE shoot something with the 8ga and POST PICS!!!! I have to see what that monster can do to a 55 gallon steel drum. |
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THE 8GA FH BELLERED TODAY. It is in Enfield I rigged with
rear locking bolt lugs. 32" barrel, tested 3.3" plastic cases. Cases are the REM kiln gun cases. With the double cup base. I shaved base a little so that chamber will fire these as well as regular 8ga plastic. None of the firing today expanded base cups at all, so they are real strong cases. Started testing to check ignition with shotgun primers and to see if cases are any good. Starting with a 110 gr mouse ball, wad under it, and 150 gr of Blue Dot, about 5000 fps.. Gun didn't even recoil.Then a 410 gr one at 3000 fps, Then a 770 gr hollowbase slug in a wadcup up to 2000 so far with 180gr of 7383. Barrel is smoothbore .832" bore at the muzzle. Ed |
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Some 8GA FH testing- using IMR 4759, 770 gr slug,
top load of 140 gr, got 2500 fps...... Over 10,000 ft lbs..Cases extract easy. The plastic in 8ga case is twice as thick as in 12ga cases. Tried 4227 and case is too large diameter for dependable ignition.So it's old dependable 4759..Ed |
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In picture of the 8ga bolt action you can see the
ring I put on front of bolt to support large diameter 8ga casehead. It is suported against thrust by the front lugs, and total bolt thrust is supported by rear lugs and have taken the heavy loads ok.. Ed |
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On Fri May 2 8pm on the Science Channel ,they will have
an article about the heavy barrel cannons that shoot the brass cases for bomb disposal.They are the same as our 12GA FH case,when resized in my dies and are shown in this thread a couple months back in picture. It will show them using them for bomb disposal. Ed |
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Have you shot anything with those yet?
I have to see some damage pics. |
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Guys have killed deer with our 12ga plastic case loads.
Earler in thread is pics of a disintigrating 6 gal pail of water shot with our long brass 12ga case, 600 gr at 3000 fps. Ed |
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Ed,
When I stopped posting on shootingsportsman.com I never expected to see more about your projects. Now I get to continue reading along. |
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Testing 8GA FH in Enfield, 1050 gr slug in wad cup, 120 gr
of 4759, over 2000 fps. Cases extract easy. Hardly any base cup expansion...Ed |
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Mother of GOD!!1!11!!1! What kind of FPE does that put out? Definitely a MEGA- I lost my conversion charts and stuff in a recent move and can't for the life of me remember the FPE formula. |
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It is only 12,000 ft lbs. I've had 600gr
up to 3400 in testing. Ed |
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Thought you guys would like this
Royal Armouries commissioned a 2 bore/gauge There is a video of it being shot on there as well |
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I wish I had that action for the 2 bore case i designed.
I was asked how I got 8ga heavy barrel so quick. First it is smoothbore, second a 110 bucks total shipping and all. First I bought a 1.5 inch dia 4130 alloy, heat treated, shaft, 32" long. Then I had a deep hole drilling company drill a .832" hole in it. Came out centered on both ends. Then after it got here I used cylinder hone to polish the inside of the bore. Threaded it, chambered it, and put in the Enfield bolt action. The heat treating it had was just like the barrel stock that barrel guys get. Ed. |
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In the article they said they based the action on a falling block harpoon gun action
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tag thats just too awesome for words! thanks for the great documentation on these builds, very interesting!
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For those wanting to see video of the 12GA FH in
the Savage busting big pail of water, one of the kids posted it on Youtube- Titled "Grampa's Cannon". I just found out that it is on there. This was the video that the still pictures posted before, was taken from. They have the sound muted so as not to hurt camera sound system. Ed |
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Grandpa's Cannon Sound does work in this one. Absolutely amazing! |
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Load of 12 triple ought buckshot in 8ga. They are
70gr each, total 840 gr, and over 2000 fps with 125 gr of 4759. Thanks for URL for the waterpail busting video above-- Ed |
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There are now two videos of 12GA FH on YouTube,
exploding big heavy walled pails of water. The "Grampa's Cannon" one with a long view, and "Grandpa's First Shot" a closeup video, the first one, that shows how the top of heavy shelf got bent. Later kids will do videos showing muzzle blast and recoil. Also the 3 ought buckshot from the 8ga load above goes through 2" hardwood ok. I will test 8ga on waterpail also, to see what happens. Ed |
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Grandpa's First Shot Grandpa's Cannon is linked on the previous page. |
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I've got extra 28ga alloy rifled barrel now.
So along with first one in Enfield I will be doing one in Mossberg 695 bolt action. Will add a little weight to the stock and one of kids will see how it does on deer this fall.Ed Oh here is URL of the Grandpa's First Shot Video-- http://www.youtube.com/watch?v=c48zTpsgbuk |
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Figure out a commercial rifle and chambering... Me wants. Now.
I have enjoyed your updates and have read on other forums from the beginning. Great stuff. |
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I am not a manufacturer or have the means to
become one You can get 12 gauges in 3.5" chambers now or have your chamber lengthened and use 3.5" better loads, or brass from RMC that we are going to test, in 3.5" length.ED |
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For the love of God!!!!! It's good to know that if the Jurassic Park Project ever becomes a reality, a fellow ARFcom'er has it covered. So, when are you going into the production phase, and will there be a belt-fed semi-auto version available to the general public? |
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Yep that guy is a really great craftman.Got great strenght
and still has the old time flavor. ED |
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We all here like it too. Interesting the
things and equipment we're doing.Ed |
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JESUS!!!!! Isn't that pushing 'DD' territory? Don't take me wrong, I like it a lot!!!!! Wow!!!!! So, you did that test with the five gallon bucket a while back. On what are going to film this one being tested?!?!? |
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As long as it can fire from any length 12ga case in any
length chamber, anddoesn't have an explosive it isn't a DD. As for testing we will test two things, stability and penetration in about 6 ft of wood.Ed |
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You've probably been asked this a thousand times, but what's
one of those going to cost, once you get it all worked out? TIA! |
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