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38/45 Mag. is born..

Discussion in 'Shooting Related Threads' started by PerazziBigBore, May 25, 2009.

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  1. PerazziBigBore

    PerazziBigBore TS Member

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    Maybe my last wildcat.. that might be useful.. It's a 45 Win mag. shortened and necked down to .357 I'm looking for over 1800 fps with a 95 grain bullet..and with a 7" barrel.. maybe 2000 fps if I get lucky. It will work thru a regular 1911 that's been built properly.. Hopefully.. using a 6" Longslide.. and a 7" bull barrel.. my dreams will be realized..
     
  2. PerazziBigBore

    PerazziBigBore TS Member

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    Ok.. got the picture up.. The first completed shell casing.. I'm open..any suggestions on the name.?????
     
  3. TOOLMAKER 251

    TOOLMAKER 251 Active Member

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    You will be pushing 40,000+ pressure with that configuration shell, hope the locking lugs hold up. Anytime you bottleneck a straight wall case the pressure jumps up. The 357 Sig generate 40,000 psi but the cases are made to handle it, the 45 ACP case is not.
     
  4. PerazziBigBore

    PerazziBigBore TS Member

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    The 45ACP case.. on top of being to short.. is to weak.. The case is formed from 45 Win Mag Starline brass.. Starline tells me its the strongest case they make.. I'm looking not to exceed 36,000 psi.. and the larger case capacity should let me exceed 9X25 Dillon with reduced pressure.. I know by sheer case volume..I can exceed the 9X25.. The question is.. by how much.. On another note.. I could use 40 Super brass.. but that is not avaiable until later this summer.. That will eliminate 3 case forming operations..but I'm giving up a little bit of case neck..On the plus side.. it will need no trimming and can be used right out the die.. I eagerly encourage anyones input.. as I'm sure I have not thought of everything..

    On a second note.. I've loaded and shot alot of 38/45 made from 45acp brass with 4.5 grains of bullseye..with 158 grain semi wadcutter.. Pressure is way under 18,000 psi and its an excellent paper puncher.. Feeding is flawless.. even with 148 grain wadcutters..

    This is not a shell I would shoot much..but I'd hate to not get it done before I can't get it done.. I'm also considering a 10mm necked down to 30 cal.. or maybe even 25.. Making something like a 256Winchester...

    All Good.. Mike
     
  5. ljutic231

    ljutic231 TS Member

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    You ould call the new shell a 38 H-U(Hurry Up) as agood a name as any
     
  6. PerazziBigBore

    PerazziBigBore TS Member

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    Well.. The 9X25 is still alive in my head.. I have a 357 Sig reamer..and a Nowlin barrel or a STI Comp barrel that I can open up..and use my regular 357 Sig dies..if I use a 10mm with no expander first.. Just.. I don't have a spare 10mm Longslide.. One will pop up sooner or later..

    Then.. I just bought a whole set of 38/45 form dies.. There.. I have the slide.. but not the barrel.. I will need a barrel with a 1 in 32" twist.. for the speed I'm trying to get to.. A 1 in 16" or 1 in 24" I just don't think will do it.. I'm waiting for Ross to give me his input before I do anything..

    On a much brighter note.. my 357 Sig Longslide 1911 with a 6" Clark barrel shot lights out yesterday.. Easy to build.. powerful.. and very,very accurate.. And when I shoot a handgun well.. its the arrow..as I'm blind as a bat..

    All Good Guys.. Mike
     
  7. Steve W

    Steve W Well-Known Member

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    That sound like a very hot round, make sure your 1911 frame can take it's beating.

    The old 10 mm caused much problems in the 1911 frames, this would be my main concern.

    Have fun at the meantime.
     
  8. PerazziBigBore

    PerazziBigBore TS Member

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    The 7.62X25 would be a smaller case.. The length is right.. just the 10mm case is larger in diameter.. The shell would look the same.. just be quite a bit faster with the 85 grain bullet..
     
  9. PerazziBigBore

    PerazziBigBore TS Member

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    Steve.. I'm still in the learning stages of all of this.. I do know.. with one of my 10mm... properly fitted for full lug engagement..and correct long link.. With full power by the book 10mm loads.. and a 11 pound recoil spring..AND A FULL COMP.. I can barely eject the shells more than 2 feet to the right.. Same barrel.. no comp 18 pound spring.. 40 S&W shells.. the brass ejects almost 5 feet out of the same gun.. I'm finding that a large heavy comp..properly fitted.. and not set up for speed.. but for lockup..in a heavy slide does not batter a frame like a uncomped gun can do.. The early 10mm were non comped.. and without a buffer.. smacked the hell out of the frame. As the frame is not the part.. taking the pressure as much as the slide is..If you prevent the battering.. You save the frame..

    Now.. sheering off the lugs on the barrel/slide is a different issue..

    Keep the cards and letters comming.. All Good.. Mike
     
  10. PerazziBigBore

    PerazziBigBore TS Member

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    Actually.. if you reloaded.. You could just barrel up a 1911 in 7.62X25.. and slightly reduce the overall length to fit the mag.. Use a 38 Super slide..and you'd have a pretty good shooter..
     
  11. Tripod

    Tripod Well-Known Member

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    Iowa man!!
    Whatever happened to the old .44 mag necked down to .357. I was always interested in that thing. I think they called it the .38 Bains and Davis or something like that.
     
  12. trapperpg

    trapperpg Member

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    What about calling it the Grizzly 357 Mag. LAR tried this wildcat some years ago along with a conversion kit for the Grizzly Mag..PG
     
  13. Quack Shot

    Quack Shot Active Member

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    I like the concept and a bottle necked cartridge has usually fed better than straight cases for me. I had played with the .400 Corbon and wondered what a 9mm would do. You could also form cases out of .308 or .30-06 brass, but you would need to ream the cases to get a thin enough neck for proper function. We did exactly that for the AutoMags some years ago. If you can use the .45 Mag case, then it's great as long as you can get brass. Keep us posted, I'd be interested to know how you make out with it.
     
  14. TOOLMAKER 251

    TOOLMAKER 251 Active Member

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    Tripod, that was a 357/44 B&D or Bain&Davis back in 1964 They were driving a 158 Gr. bullet at 1900 FPS +
     
  15. PerazziBigBore

    PerazziBigBore TS Member

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    The 357 Grizzly was the 45 Win Mag.. necked to 38 cal.. It used the whole case.. Humdinger of a shell.. just to long for a regular 1911.. It rivaled the 357 Bain and Davis.. which I shot years ago in a T/C break action pistol.. WOW.. it was a handful.. and deadly accurate.. I don't have enough case to rival it..and you can't beat cubic inches.. But I might come close..
     
  16. Ahab

    Ahab Well-Known Member

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    Hey!

    Why not call in .357 BBP ?
     
  17. Brian in Oregon

    Brian in Oregon Well-Known Member

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    PerazziBigBore, congratulations, you've reinvented the 357 Auto Mag.
     
  18. gun fitter

    gun fitter TS Member

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    Mike is it the Comp's weight or porting that reduces the punishment on the frame? Both?

    Joe
     
  19. Mike Michalski

    Mike Michalski Member

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    Kinda looks like my J.D. Jones .41 Avenger.
     
  20. nrasmus

    nrasmus Member

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    Call it the 357-1911

    or maybe the 38 auto ultra mag


    Just curious are these for fun or are you trying to find different loads that are accurate and still make the IPSC power factor for competition?


    Nick
     
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