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Old April 2, 2014, 04:41 PM   #1
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Help with seating depth-.45 ACP W/200gr.SWC

Looking to a little input on your favorite seating depth for the 452460 or the plated 200gr. SWC
in a 45acp automatic that gives you good function.

Seems like I recall seating the bullet shoulder 1/32nd" above the case mouth as being a popular starting spot.
Sound about right? Or do you go about it differently.

Thanks, JT
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Old April 2, 2014, 04:58 PM   #2
Mike / Tx
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To be honest I never really measure mine. I did onced upon a time long ago when I first started out loading for my 10mm, but after getting things set up and rolling I just left the dies set for the best load I had going and went on my happy way.

That said, nowadays I am pouring my own cast bullets and as such am changing things up fairly regularly. Since I might load any one of several different bullets I just use this, "The Plunk Test" as a guide and go on with things.

I will make up a half dozen dummies when I try out a new bullet and as long as they flow through the mag and chamber OK they get loaded for real and shot for accuracy. I also admit to using one of the Wilson case gauges as well. The one I have is actually a bit tighter than the chamber of my 1911, so if they fit it they will fit the chamber. Even so I will also run a randomly picked dozen or so of the new loaded rounds through the Plunk Test just to be sure things are as they seem.

Hope that link helps.
Mike / TX
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Old April 2, 2014, 06:01 PM   #3
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1/32" above the case mouth is about right. For my gun - a vintage 1984 Colt 1911 - The correct COL is 1.238" for your basic 200g LSWC. Which is something closer to 1/64" above the case mouth; although like Mike, I've never actually measured it.

For your gun, it might be something different. Actual mileage may vary. You must perform a plunk test for your gun and that bullet to find the correct COL. Cartridge Overall Length isn't something that is variable in nature. It's either right or it's wrong. And it must be determined for each and every bullet type, and each and every gun for which you load it.
Gun control laws benefit only criminals and politicians - but then, I repeat myself.

Last edited by Nick_C_S; April 2, 2014 at 06:07 PM.
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Old April 2, 2014, 06:27 PM   #4
filthy phil
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I pull my bbl, see where the factory round sits, flush with the ramp, and try to duplicate that.
Speer 200lswc

Works fine in glocks and sig 1911
glocks gen4 :21, gen 3 17tb, 19, 30s (×2) , sig tacpac 1911,
colt 6920(x2), cia underfolder ak, npap underfolder

Last edited by filthy phil; April 2, 2014 at 06:33 PM.
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Old April 3, 2014, 09:36 AM   #5
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I load the 200gr SWC to match the profile of factory ball ammo.
Never bothered to actually measure, as this works just fine.
Walt Kelly, alias Pogo, sez:
“Don't take life so serious, son, it ain't nohow permanent.”
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Old April 3, 2014, 02:43 PM   #6
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Bill Wilson's load is/was 5gr Bullseye, any primer and OAL @1.25". A friend had trouble @ 1.24" and no problems @ the 1.25"
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Old April 3, 2014, 06:36 PM   #7
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My 1911 loves 1.230 length rounds.
Gun control means: Being able to hit what you are shooting at.
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Old April 3, 2014, 06:56 PM   #8
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My OAL for the 200gr SWC setting on top of 5.7 grs of Win 231 was 1.245.
This was a good load for the old major power USPSA/IPSC, these loads fed fine in every 1911 style gun I used them in.

Best Regards
Bob Hunter
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Old April 4, 2014, 09:36 AM   #9
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Thanks for all the tips.

Sounds like its time to load up a dummy ( I am referring to the ammo at this point) or six and get function by racking the slide quick-like.

I like the idea of leaving the seating plug alone where it is set for 230 FMJs and will start there.

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Old April 4, 2014, 04:18 PM   #10
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If this bullet is seated too long it will stick in the bbl, it may fire or it may not go into battery. I had some that fired great in a particular gun but if you had to unload a round from the chamber you could tell it was sticking in the chamber. Friend of mine made some too long and they wouldn't all go into battery and would stick in the bbl, hard to rack the slide back to clear it. Take the Bbl out and do the plunk test to make sure it isn't too long.
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Old April 4, 2014, 05:41 PM   #11
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I use an RCBS cast 200 grain SWC, and I load it to an overall length of 1.168, and that seems to function pretty well in my barrels. With the semi-wadcutter I've found loaded lengths that will go into a case gauge perfectly and still regularly malfunction in the gun. With bullets other than round nose simply using a go-no go gauge to determine whether it will function is not always enough.
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