452 or 451 or LLA

Mark Daiute said:
Well folks, it was too simple. Seat to 2.20. Issues all gone. Thank you to everyone.
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....until you get premature slide lock from the fat nose base snagging the slide release lever as it feeds up out of the magazine. Ask me how I know...

The 230-2R is just about perfect for 1911s, the nose shape fits the front magazine radius, it can be seated to the proper OAL, works in both standard, SWC, and hybrid feed lip magazine styles, works very well with tumble lube, and is quite accurate.
 
the 2r is the better design.

the 68 has the rounded edges on the meplat part of the nose to duplicate the same contact point a the old school jacketed bullets.
that's why it feeds so successfully.

the store bought bullets from magma are also an excellent design, they give you latitude on the in-out relationship and can be super simple to seat right flush to the front drive band and run without any experimentation.

anyway.
i don't hear too many people make a comparison between the JMB designed 1911's and the JMB designed lever rifles.
but they feed ammo exactly the same and need the same attention paid to the shape and length of the bullet/case combination.
the original cast bullet designers knew this and copied what worked even if it was disguised just a little bit.

it was the copy cats that come along and screwed things up with a 'better idea'.
 
Rear-pivoting cartridge lifter, an innovation attributed to JMB but I think was actually invented by Colt's and later Marlin's guy Andrew Mason. Enables the action/receiver to be one full cartridge length shorter.

I tried explaining to someone once that all of JMB's levergun designs were falling blocks. "bbbut but it's gotta bolt". So, does that make it an 1873? "Well no...."
 
the 63 had the simple lift and push system, the 73 added the toggle.
the 86/92 was a new system and super simple with the up and down motion acting as the locking link as well as the feed mechanism.
you can see the idea still carried forward clear until now in shot guns and such.
move the hammer here instead of here the bolt down here instead of up here and it all makes sense.
 
JBinMN said:
Mark,
Just so you know, when I was using the 1.20" for the example for extrapolation last night I just took a guess with that COAL for the 2R bullet.
I went down to my reloading area and checked some manuals and some of my own bullets and I am using a COAL of 1.265" for the 2R.
(I use 1.17" for the 230TC bullet)
The Bullet OALs I used in the earlier example are correct at 0.660 for the 2R and 0.628 for the 1R.
Difference of 0.032".

To keep the bullets bases the same you would be limited to the 0.032" for seating the 1R to keep the same remaining volume of case capacity for both bullets.

So, subtracting 0.032 from 1.265 = 1.233" COAL for a safe load for your 1R is better than going with a shorter COAL to keep a reasonably safe pressure through out the powder range for the powder you are using.
Just thought I'd mention that.
I am trying to type this out on my phone so please forgive any mistakes .
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Ian said:
....until you get premature slide lock from the fat nose base snagging the slide release lever as it feeds up out of the magazine. Ask me how I know...

The 230-2R is just about perfect for 1911s, the nose shape fits the front magazine radius, it can be seated to the proper OAL, works in both standard, SWC, and hybrid feed lip magazine styles, works very well with tumble lube, and is quite accurate.
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It was pointed out to me that I mentioned a COAL of 2.2 when I meant 1.2. My mistake.
 
Ian was just pointing out that he left the slide release too long in the 1911 he made from the various pieces of asteroid he found in his back yard.
chuckle.
 
fiver said:
the asteroid catcher required too much angle iron i guess?
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Naw, it was the FAA giving me guff for the tower not having enough warning lights on it. Funny thing and I'll take a picture to show you sometime is there are two areas about 30' across on my little patch here where the ground is covered with little orange jelly bean and M&M sized nuggets of meteorite. Probably from the same object.
 
i found a geode patch like that out in the Wyo. desert once.
i picked up a bunch of little round rocks and was sitting there cracking them open with a sledge hammer looking for a couple of good ones when the company man walked out of the van to see what the hell i was doing.
i showed him a few i'd broke in half that had crystals in them to satisfy his curiosity.

i seen him pick a bunch up when we were rigging down.
 
One of my vacations in WY, I brought my trail bike and was riding all over the Big Horns. While on the deserty west side, I stopped to gather some fist sized gastrolyths (location given to me by a gas station employee). Then a official lookin dude in a truck came out of nowhere to shoo me away from that area, saying it was a University dig site (Dino bones). I guess taking some rocks wasn't allowed.
 
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