Reduced .223 Rem Loads

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Dec 13, 2017
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SE AZ
Does anyone have a reduced .223 Rem load they'd like to share?

I'm looking to down load one of my straight pull 223's for an ultralight predator/fur-friendly rifle in 22 Hornet-level velocity until I have an ultralight 17 caliber AR barrel built.

Lyman has some lower pressure, reduced speed, lead bullet loads which can get me started using some powders I have on hand like AA #9, Unique, and IMR-4198, but I would appreciate hearing recommendations from folks here.
 
No bluedot 😱
Unique can be used but 4-5.5 grains but be careful. Research first.
Different pistol powders can be used.
I found some older Handloader magazine data that used 8.0gr Unique under a 40gr Nosler ballistic tip and cast loads go a bit higher in my Lyman book (maxes around 10-12gr iirc, but away from my books right now). Not saying I would go higher, but the Lyman data was constrained in those max loads by speed for cast, not pressure.
 
I’ve used some of Lyman’s lead bullet data with fast pistol powders, but ignition was questionable with so little powder in the case. Many hang fires.

The lowest velocity loads from Sierra are only a few hundred fps faster than the Hornet data.

4895 seems to work well in bottleneck cartridges and still have decent case fill. Hogdon even made a suggestion that anything from 60% of max loads on up are safe.
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The reduced 4895 loads would be my first choice but you can still find older IMR manuals online and I have used some of their old data with 4227 for reduced loads before, in several calibers.

(I have some old cans of IMR4227 that are likely older than I am - I'm working through one can when I need reduced stuff for the kids, and I'll likely never open the other, they can sell it to some old junk collector when I'm gone)
 
Hogdon has a tab on their reloading page for subsonic and reduced loads.
I have also had good luck with tite group around 4-5.5 grains ~1700 fps in my straight pull with 40gr speers
 
I found what I’m looking for to use what I have on hand.


Between the cast loads with IMR 4198 and full power loads with the same powder up to 60gr bullets, I figured I was in the clear to experiment a bit in the middle. This confirms it.
 
I’m not sure how “reduced” my load is but I’ve been using it for many years on Fox, coyote and deer with excellent results.

23.3gr IMR3031 under a Nosler 60 grain BT. I call this my “universal” load because it shoots MOA or less in just about any 223 I’ve ever shot it in. This gets me 2550 from a 12.5” SBR and kills stuff with authority. It’s actually a bit odd how well it works. Tiny exits on Fox and coyote and immediate death.

This is the exit from about 80 yards.

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