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Old June 14, 2011, 09:08 PM   #1
kxkid
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Imr 4198

Who has used it in 223?

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Old June 14, 2011, 09:30 PM   #2
Jim243
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I use IMR-4198 for 7.62x39 only, it is a faster burning powder than H-335 or other powders use in 223. There are loads from Hodgdon for the 223 but it will not use enough of the case space to give good results. With most reloads you want your powder to fill the case 90% or better.

The powder is recommended for smaller size cases like the 222 Remington or the 221 Fireball or a 45-70 rifle.

There is a ton of better powders for the 223, I would recommend H-335, IMR-8208 XBR or H-4895.

Jim
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Old June 14, 2011, 09:33 PM   #3
A_Gamehog
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I have since the 80's

It's been reformulated recently but still shoots the same. made in Australia

22 Grains IMR 4198
any brass same make I used New Lapua, Nosler, Lake City 09, Hornady, it did not matter they all shot good.
any primer
52 Grain Hornady match or Sierra match 52's

No better powder in the .223 in my mind for 40-55 grain bullets.

Especially accurate in the AR-15's burns clean.

1/2" or better in my AR-15 or .223 Bolt @ 100 yards all day long..
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Old June 16, 2011, 10:22 PM   #4
Kevin Rohrer
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It's a fast burning powder and works well for short-barreled rifles. I use it in my 20" barreled .308 Scout Rifle.
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Old June 19, 2011, 07:13 AM   #5
dodge
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I don't use in my .223 but do use it in my 45/70 with a 350 gr FN.
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Old June 19, 2011, 08:10 AM   #6
steve4102
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Quote:
Hodgdon for the 223 but it will not use enough of the case space to give good results. With most reloads you want your powder to fill the case 90% or better.
Actually IMR 4198 is a fairly bulky powder and about 22gr will give 100% case filling in the 223/5.56.
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Old June 19, 2011, 06:04 PM   #7
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I use both 4198s in my old 222. 20.0 grains with a 50 grain bullet of either will shoot one hole groups off the bags.
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Old June 19, 2011, 07:10 PM   #8
Jim243
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Quote:
about 22gr will give 100% case filling in the 223/5.56.

That's strange since 25 grains of H335 will only do 85% of case volume. A max load for IMR 4198 for that bullet is "20.4" grains for the 55 gr. Sfire and "20.4 grains" for the 55 gr. SPR SP. After the gunpowder settles in the case I would guess about 65% of case by volume. This if from the Hodgdon's 2011 Annual Manual for Reloading.

Jim

Quote:
Actually IMR 4198 is a fairly bulky powder and about 22gr will give 100% case filling in the 223/5.56.
No it is not, it is about 3/4 the size of H-4895 and you do not get a compressed charge with H-4895 till you are OVER 26 grains.

Quote:
I use both 4198s in my old 222. 20.0 grains with a 50 grain bullet of either will shoot one hole groups off the bags.
That is what it was designed for the 222 not the 223. If you want a faster buring powder than H-335 try IMR 8208 XBR it works extreemly well in the 223 Remingtion.
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Last edited by Jim243; June 19, 2011 at 07:27 PM.
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Old June 19, 2011, 10:20 PM   #9
jhansman
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I tried it for my Howa 1500 Varminter .223 and a 60 gr. bullet, but could never find a load that performed as well as H322 does, so I'm using what I have left for my AK-47 (Saiga) loads. I tried it after reading several threads that recommended it as a target powder, but alas...
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Old June 19, 2011, 11:40 PM   #10
steve4102
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Quote:
No it is not, it is about 3/4 the size of H-4895 and you do not get a compressed charge with H-4895 till you are OVER 26 grains.
Sorry ,but you are mistaken. Take the time to load 26gr of IMR 4198 into a 223 case and watch it overflow. 22gr will be just below the neck shoulder junction.

Edit to add info.
Nosler #6 lists load density with each powder charge. In the 223 section, 22gr of IMR 4198 has a Load density of 91% with 50/52gr bullets.

QuickLoad lists 22gr of IMR 4198 as 100% with 55gr Hornady FMJ.

Last edited by steve4102; June 19, 2011 at 11:51 PM.
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Old June 21, 2011, 05:55 PM   #11
chris in va
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I just loaded a bunch of 223's using 4198. The max charge of 20 grains gets it up toward the case neck but isn't a compressed charge like 4895 is at 26gr.
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Old June 21, 2011, 06:10 PM   #12
Quantrill
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20gr. of 4198 was my .223Rem choice of powder for years with the 55gr. FMJ.
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