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Author Topic: The Twenty-Year Pistol... .450 SMC 1911 Longslide  (Read 5514 times)

Diamondback

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Re: The Twenty-Year Pistol... .450 SMC 1911 Longslide
« Reply #30 on: January 10, 2025, 08:50:48 PM »
Slide has arrived... now the nasty part begins, lapping and filing to fit.
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Big Frank

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Re: The Twenty-Year Pistol... .450 SMC 1911 Longslide
« Reply #31 on: January 11, 2025, 03:39:07 AM »
I never had to fit anything, including so-called gunsmith fit parts like barrel bushings that dropped right in. It sounds like a PITA to fit everything, but the payoff is worth it. I'm looking forward to seeing it completed.
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Diamondback

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Re: The Twenty-Year Pistol... .450 SMC 1911 Longslide
« Reply #32 on: January 11, 2025, 10:17:25 AM »
I would suspect frame/slide fitting is easier when the same shop makes both. As it it, I'm going to have to have the firing pin port hogged out when I start the Magnums.. Fusion bores for 9mm pins.
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Big Frank

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Re: The Twenty-Year Pistol... .450 SMC 1911 Longslide
« Reply #33 on: January 11, 2025, 02:44:09 PM »
As long as you don't go too big. .45 ACP is a lot more forgiving in that area because of the low pressures compared to most other calibers. 3,000 PSI lower than .22 LR, as a matter of fact.
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""It may be laid down as a primary position, and the basis of our system, that every Citizen who enjoys the protection of a free Government, owes not only a proportion of his property, but even his personal services to the defence of it, and consequently that the Citizens of America (with a few legal and official exceptions) from 18 to 50 Years of Age should be borne on the Militia Rolls, provided with uniform Arms, and so far accustomed to the use of them, that the Total strength of the Country might be called forth at a Short Notice on any very interesting Emergency." - George Washington. Letter to Alexander Hamilton, Friday, May 02, 1783

THE RIGHT TO BUY WEAPONS IS THE RIGHT TO BE FREE - A. E. van Vogt, The Weapon Shops of Isher

Diamondback

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Re: The Twenty-Year Pistol... .450 SMC 1911 Longslide
« Reply #34 on: January 11, 2025, 04:20:20 PM »
True, but remember this is a .450 SMC, not a .45ACP - though I will be using a 9mm pin, lighter recoil spring and ACP ammo for Phase One function testing. I have no idea how I'll know when it's time to step up to Plus-P for Phase Two, or up to SMC though - otoh true SMC brass is supposed to be beefy enough containing the powder detonation that any Plus-P rated gun can eat a steady diet of it too.

Also worth noting that I ordered most of my parts as Heavy Duty, Bulletproof or similar "high-side-of-tolerances extra material" with full intent of having to file them until they fit and function. This is how our ancestors did it under Browning's watchful eye, after all...
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Re: The Twenty-Year Pistol... .450 SMC 1911 Longslide
« Reply #35 on: Today at 06:51:33 PM »
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Big Frank

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Re: The Twenty-Year Pistol... .450 SMC 1911 Longslide
« Reply #35 on: January 11, 2025, 08:06:00 PM »
I was thinking about possible primer flow under the higher than .45 Super pressure, and thought the firing pin hole better not be too big. That's something I never had to worry about because I didn't have anything like .450 SMC.
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""It may be laid down as a primary position, and the basis of our system, that every Citizen who enjoys the protection of a free Government, owes not only a proportion of his property, but even his personal services to the defence of it, and consequently that the Citizens of America (with a few legal and official exceptions) from 18 to 50 Years of Age should be borne on the Militia Rolls, provided with uniform Arms, and so far accustomed to the use of them, that the Total strength of the Country might be called forth at a Short Notice on any very interesting Emergency." - George Washington. Letter to Alexander Hamilton, Friday, May 02, 1783

THE RIGHT TO BUY WEAPONS IS THE RIGHT TO BE FREE - A. E. van Vogt, The Weapon Shops of Isher

Diamondback

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Re: The Twenty-Year Pistol... .450 SMC 1911 Longslide
« Reply #36 on: January 12, 2025, 01:46:27 PM »
Frank, IIRC primer flow was one of the problems with Super, and SMC addressed it by switching to Small Rifle primer instead of Large Pistol. IF I can ever get a hold of Fernando Coelho at Panteao, that'd be a question for him.

Hey, does Fearless Leader Mike B. ever post here anymore?
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Rastus

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Re: The Twenty-Year Pistol... .450 SMC 1911 Longslide
« Reply #37 on: January 12, 2025, 06:00:14 PM »
Quote from: Diamondback on January 12, 2025, 01:46:27 PM
<snip>
Hey, does Fearless Leader Mike B. ever post here anymore?

Rarely.  Unfortunately.  He's a wealth of knowledge to access.
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Diamondback

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Re: The Twenty-Year Pistol... .450 SMC 1911 Longslide
« Reply #38 on: January 15, 2025, 09:18:45 PM »
Quote from: Rastus on January 12, 2025, 06:00:14 PM
Rarely.  Unfortunately.  He's a wealth of knowledge to access.
Pity. MB was there back in the old days of AmBack when this thing was conceived, and thought he might appreciate some of the Old Guard's input finally being made hardware.
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Rastus

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Re: The Twenty-Year Pistol... .450 SMC 1911 Longslide
« Reply #39 on: January 16, 2025, 07:18:12 AM »
Send him a private message.  He may check them.  I know Marshall checks his.  It would be good to have Michael drop in every so often
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Necessity is the plea for every infringement of human freedom.
It is the argument of tyrants; it is the creed of slaves.
-William Pitt, British Prime-Minister (1759-1806)
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