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Posted: 12/23/2014 4:09:55 PM EDT
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One of the few 223 powders that I can find is IMR-4320.
I've got a Ruger AR 556 and Hornady 55 grain bullets. I know nothing about 4320 other than it is available. Is it any good in a 223 (used for plinking at 50 yards)? |
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Quoted:
I made fifty test loads each with 4320 and Xtreme 55g .223 FMJ, SIE 69 & 77 HPBT. Won't be able to shoot them until January. I have a pet 4320 load with Hornady 68 grain HPBT bullets that hovers right around 3000fps and is very accurate. Makes me wonder why people are go gaga for Varget. I think there are a lot of sheeple that love Varget but I'll leave that discussion for someone that likes to argue on the internet. 
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| Its the first powder I ever loaded with, 25.0 grains topped with a 55 grain fmjbt made some respectable groups at 100 yards out of a 16" carbine. The only complaint I have is that it is a long grain powder that doesn't meter as well as a ball powder does. So keep an eye on charge weights if you're looking for consistency and expect to cut a few kernels in your measure (at least my uniflow does). |
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Quoted:
Its the first powder I ever loaded with, 25.0 grains topped with a 55 grain fmjbt made some respectable groups at 100 yards out of a 16" carbine. The only complaint I have is that it is a long grain powder that doesn't meter as well as a ball powder does. So keep an eye on charge weights if you're looking for consistency and expect to cut a few kernels in your measure (at least my uniflow does). It's not a long grain powder at all. It's an extruded powder, but much shorter cut than IMR 4895/4064/etc. It's more in line with H322/RL15 on metering qualities in my experience. |
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I like IMR-4320. I tried it with Sierra's 55gr HP #1390 in my VTR-15. I ended up getting a .700" 5 shot group at 100 yards with it.
I would not be very sad if it was the only thing I could find. I also have used it with 150gr bullets in the 7.62x54R with very good results. It's a good old powder. :) Motor1 |
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Quoted:
IMR-4320 is my go-to powder for .223 with 55- 68 grain bullets now. I like way better than 748 or Varget. Sad to say though I ran out a few months back and can't find anymore... dammit. I guess I'm gonna be forced to try that new CFE 223 stuff now. http://www.grafs.com/retail/catalog/product/productId/7348 The note about having less than 5 in stock is a very recent addition so if you want some I'd act soon. I just bought 16 pounds. |
| I keep a few pounds on hand, as well as H4350 and Unique pistol powder for when times are tough as far as finding powder. I have an old Lyman (I believe) manual from the 70s or 80s that lists a IMR4320 load for a lot of different cartridges. I have had good results with it in .22-250 and 5.6x57. I have never used it in .223 though. If I get some free time I may have to work up some loads with 69gr. SMKs to see what it will do. |
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