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  1. #11
    Advisory Panel Jim Tarleton's Avatar
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    P.O. Ackley performed some amazing pressure tests with various rifles, including a lever action Winchester. He would test fire one, then cut off a lug, repeat the test, to the point one would believe the rifle would fail, but many didn't. I believe the tests are within one of his handloading manuals. He couldn't blow up an Arisakaicon either. There were two standouts for strength, the Arisaka and I forget the other one.

    Michael Petrov posted a series of test using LN Springfields that boggled my mind. Those tests are posted either here or on Joustericon.

    I have a Model 98 in which I have separated cases under pressure, one blowing off the floorplate and shattering the stock. It is a 257 Roberts and it is still my favorite hunting rifle. In 1968, I bought 10,000 rifle primers and most of them went through that rifle before 1972 when I graduated (finally). It still shoots MOA. I bought the barrel from PSA for $14.95 out of a comic book. It has one of the old externally adjustable target triggers with 3/8" triggers and several years ago I added a Mod 70 style safety.
    *********************************

    "Me. All the rest are deados!"

    67th Company, 5th Marines 1st Sgt. Daniel "Pop" Hunter's response to 1st Lt. Jonas Platt's query "Who is your Commander"?, Torcy side of Hill 142, Belleau Wood, 8:00 am, 6 Jun 1918.

    Semper Fidelis!

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    A Collector's View - The SMLE Short Magazine Lee Enfield 1903-1989. It is 300 8.5x11 inch pages with 1,000+ photo’s, most in color, and each book is serial-numbered.  Covering the SMLE from 1903 to the end of production in India in 1989 it looks at how each model differs and manufacturer differences from a collecting point of view along with the major accessories that could be attached to the rifle. For the record this is not a moneymaker, I hope just to break even, eventually, at $80/book plus shipping.  In the USA shipping is $5.00 for media mail.  I will accept PayPal, Zelle, MO and good old checks (and cash if you want to stop by for a tour!).  CLICK BANNER to send me a PM for International pricing and shipping. Manufacturer of various vintage rifle scopes for the 1903 such as our M73G4 (reproduction of the Weaver 330C) and Malcolm 8X Gen II (Unertl reproduction). Several of our scopes are used in the CMP Vintage Sniper competition on top of 1903 rifles. Brian Dick ... BDL Ltd. - Specializing in British and Commonwealth weapons Chuck in Denver ... Buy-Sell-Trade .. Guns, Cars Motorcycles Your source for the finest in High Power Competition Gear. Here at T-bones Shipwrighting we specialise in vintage service rifle: re-barrelling, bedding, repairs, modifications and accurizing. We also provide importation services for firearms, parts and weapons, for both private or commercial businesses.
     

  3. #12
    Contributing Member rcathey's Avatar
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    Michael Petrov also talked about tests he did with a trapdoor.

    Apparently, it was SO STRONG he didn’t fee right about posting the results. I would really love to see them!

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  5. #13
    Advisory Panel Jim Tarleton's Avatar
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    I am pretty sure Michael's tests are on a Joustericon forum. Sadly, I think Mike deleted them. I have PO's tests somewhere upstairs, where I haven't been in 10-years. I wonder if that coon still lives up there?

    People are funny about what is safe to shoot and what is not. I have a Rem Rolling Block in 7mm. I shoot commercial ammo in it. One day I was plinking with it and as soon as I fired, something hit me in the forehead. I reached up and picked a fired primer out of my bleeding forehead. The source was no mystery. I was a mile deep in a swamp filled with cottonmouths the size of your calf muscle. I also know it is "technically" impossible for the primer to blow past the lock in a RRB unless the hammer is all the way back. I related the event to a friend of mine, and he called a 10 on the BS meter Always safety conscious, I calmly asked him if he wanted to give her a go. An hour later, that sucker was picking a fired primer out of his forehead.

    I think I know how it was done.

    The rifle is disassembled and locked away ever since, along with another RRB 45-70 project and my whole CCH setup. It is amazing what a little rap on the head will do for you. Did I mention I have a cute little dimple in my forehead now?
    *********************************

    "Me. All the rest are deados!"

    67th Company, 5th Marines 1st Sgt. Daniel "Pop" Hunter's response to 1st Lt. Jonas Platt's query "Who is your Commander"?, Torcy side of Hill 142, Belleau Wood, 8:00 am, 6 Jun 1918.

    Semper Fidelis!

  6. #14
    Contributing Member rcathey's Avatar
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    Quote Originally Posted by Jim Tarletonicon View Post
    I am pretty sure Michael's tests are on a Joustericon forum. Sadly, I think Mike deleted them.
    I did manage to find some reference to this through a google search on a different forum. This is coming from someone who claimed to talk to someone who claimed to be there...so take with a few grains of salt. Still very interesting:

    "The Springfield Trapdoor belonged to Don Neal, another single shot aficionado.
    John said they kept adding 3031 powder to the case until approaching .458 magnum pressure and still the Springfield held. They had to knock the case out from the muzzle with a rod as the pressure rose. She finally blew with 40 grains of 2400 sending the block skyward as they could not get enough 3031 into the case to make Springfield fail.
    His postmortem showed that the barrel had split at the extractor cut and the escaping gas had taken the action apart."
    -Ryan

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    Legacy Member Calif-Steve's Avatar
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    I recall reading the US Army re-barreled several Trapdoors into .30-40 configuration. At lower velocities all ran well. However, as they approached higher velocities the gun began to unlock itself. The Army decided to build more Krags and leave the Trapdoors in .45-70.

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    Contributing Member rcathey's Avatar
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    30-40 Trapdoor…now that’s a rifle I’d love to have!

  10. #17
    Advisory Panel browningautorifle's Avatar
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    I've seen replica trapdoor carbines unlock with standard loads.
    Regards, Jim

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    Legacy Member Wineman's Avatar
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    Back in my High School days circa 1974 one of my slightly older classmates (but still a friend) had a Rossi 12 gauge 3" magnum single shot. He had the barrel shortened to the USAicon limit. While it would not unlock, it would disassemble itself during firing as the forearm would come off and shortly the barrel would also make a move. I don't know if anything else was done to it but it was not much fun to shoot and kind of scary.

    Dave

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