Odd 45 cal 220 gr bullet...

bjm42 · January 31, 2021, 02:50 AM

220 gr .45 projectile. Sorry no picture. No load data in my 4 manuals. What is it, & how used?
I'm calling it "half jkt" lead nose flat point. Diameters: .450 @ jkt, .451 @ base of knurled lead "upper half" of bullet; length is .645. These were a gift, but history unknown. Will try in Glock .45, if I can find load data.
Maybe can be used in 45 Colt?
Appreciate some wisdom, so I know what I'm dealing with. Thanks

nhyrum · January 31, 2021, 03:01 AM

I've got no personal experience with them, but I have heard of half jacketed bullets, or, as you said, half jackets. 451 would be a bit small for 45 Colt, I believe those might be a 45acp bullet. If I had them and had nothing else to shoot them in, I'd load them in a Colt and just not expect great accuracy from them

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std7mag · January 31, 2021, 08:49 AM

Possibly a hunting bullet for 45 Colt.
The 1/2 jacket lets the bullet expand more, faster.

Rod47 · January 31, 2021, 12:35 PM

I have never seen what you describe as a bullet for 45acp. This sounds like a bullet for a revolver cartridge. Hornady made half jackets back in the 60's

Jim Watson · January 31, 2021, 12:43 PM

I recall the old Hornady half jacketed bullets, but the "knurled lead" part does not fit.
Also 220 grains is an odd weight.
I conclude them to be the product of a small shop, or DIY bullet maker.

Load data:
Powder charge in middle of 230 grain .45 ACP range.
Seat to where it fits the magazine and chamber and runs up the feed ramp from magazine to chamber. If it will at all, depending on shape.

rc · January 31, 2021, 12:53 PM

If they feed through 45 auto, then should be good in 45 auto.

**44 AMP** · January 31, 2021, 03:56 PM

The nose profile should give you a clue, SWC or flat tip would be meant for revolver use, RN for semi auto.

Back in "the dark ages" a fair number of people swaged their own half and 3/4 jacketed bullets.

The alloy of the lead wire used for the cores was usually very soft, sometimes even pure lead. jacket material could be bought, or "found" and some bullets were jacketed using brass from fired cases or copper from pennies, or other sources.

The real issue with half jacketed pistol bullets (home made or factory) is velocity. Specifically TOO LOW a velocity can allow the core to separate from the jacket, in the gun barrel, and can leave the jacket stuck in the bore.

Full speed load levels don't do this, but light loads can, so be aware and load them accordingly.

MarkCO · January 31, 2021, 04:12 PM

Jacketed Flat Nose. Speer made them in .357, .41, .44, and .45 calibers for magnum revolvers, many used them in IHMSA. Complete bullets as well as the cups in those calibers. Soft lead with a crimped on jacket. Yes, folks made their own as well. I still have my cannelure machine to mate the jacket to the core, just have not made any in a long time. Herter's, Corbin and others made and still make the cups.

I'd not use them in an auto-loader myself.

bjm42 · January 31, 2021, 06:21 PM

Thanks all for advice.
I think I will just pass them on to a professional reloader I know.
I am just not one to "guess" my way into harm's way.

January 31, 2021, 02:50 AM	#1
bjm42 Member Join Date: April 23, 2011 Location: Placer Co, CA Posts: 47	Odd 45 cal 220 gr bullet... 220 gr .45 projectile. Sorry no picture. No load data in my 4 manuals. What is it, & how used? I'm calling it "half jkt" lead nose flat point. Diameters: .450 @ jkt, .451 @ base of knurled lead "upper half" of bullet; length is .645. These were a gift, but history unknown. Will try in Glock .45, if I can find load data. Maybe can be used in 45 Colt? Appreciate some wisdom, so I know what I'm dealing with. Thanks Last edited by bjm42; January 31, 2021 at 02:56 AM. Reason: correct description

January 31, 2021, 08:49 AM	#3
std7mag Senior Member Join Date: June 23, 2013 Location: Central Taxylvania.. Posts: 3,611	Possibly a hunting bullet for 45 Colt. The 1/2 jacket lets the bullet expand more, faster. __________________ When our own government declares itself as "tyrannical", where does that leave us??!! "Januarary 6th insurrection". Funny, I didn't see a single piece of rope...

January 31, 2021, 03:56 PM	#7
44 AMP Staff Join Date: March 11, 2006 Location: Upper US Posts: 30,479	The nose profile should give you a clue, SWC or flat tip would be meant for revolver use, RN for semi auto. Back in "the dark ages" a fair number of people swaged their own half and 3/4 jacketed bullets. The alloy of the lead wire used for the cores was usually very soft, sometimes even pure lead. jacket material could be bought, or "found" and some bullets were jacketed using brass from fired cases or copper from pennies, or other sources. The real issue with half jacketed pistol bullets (home made or factory) is velocity. Specifically TOO LOW a velocity can allow the core to separate from the jacket, in the gun barrel, and can leave the jacket stuck in the bore. Full speed load levels don't do this, but light loads can, so be aware and load them accordingly. __________________ All else being equal (and it almost never is) bigger bullets tend to work better.

January 31, 2021, 04:12 PM	#8
MarkCO Senior Member Join Date: October 22, 1998 Location: Colorado, USA Posts: 4,362	Jacketed Flat Nose. Speer made them in .357, .41, .44, and .45 calibers for magnum revolvers, many used them in IHMSA. Complete bullets as well as the cups in those calibers. Soft lead with a crimped on jacket. Yes, folks made their own as well. I still have my cannelure machine to mate the jacket to the core, just have not made any in a long time. Herter's, Corbin and others made and still make the cups. I'd not use them in an auto-loader myself. __________________ Good Shooting, MarkCO www.CarbonArms.us

January 31, 2021, 03:01 AM	#2
nhyrum Senior Member Join Date: March 10, 2016 Posts: 598	I've got no personal experience with them, but I have heard of half jacketed bullets, or, as you said, half jackets. 451 would be a bit small for 45 Colt, I believe those might be a 45acp bullet. If I had them and had nothing else to shoot them in, I'd load them in a Colt and just not expect great accuracy from them Sent from my SM-G975U using Tapatalk

January 31, 2021, 12:35 PM	#4
Rod47 Member Join Date: August 3, 2017 Posts: 45	I have never seen what you describe as a bullet for 45acp. This sounds like a bullet for a revolver cartridge. Hornady made half jackets back in the 60's

January 31, 2021, 12:43 PM	#5
Jim Watson Senior Member Join Date: October 25, 2001 Location: Alabama Posts: 19,180	I recall the old Hornady half jacketed bullets, but the "knurled lead" part does not fit. Also 220 grains is an odd weight. I conclude them to be the product of a small shop, or DIY bullet maker. Load data: Powder charge in middle of 230 grain .45 ACP range. Seat to where it fits the magazine and chamber and runs up the feed ramp from magazine to chamber. If it will at all, depending on shape.

January 31, 2021, 12:53 PM	#6
rc Senior Member Join Date: April 28, 2001 Location: CA Posts: 1,930	If they feed through 45 auto, then should be good in 45 auto.

January 31, 2021, 06:21 PM	#9
bjm42 Member Join Date: April 23, 2011 Location: Placer Co, CA Posts: 47	Thanks all for advice. I think I will just pass them on to a professional reloader I know. I am just not one to "guess" my way into harm's way.