IMR 4007SSC in 223?

C

cobweb

New member
Has anyone tried to use IMR4007SSC in a 223?
I see WIN 748 and BL-C(2) listed for 55 through 77gr loads. The 4007SSC is slightly slower than both of these, so I was wondering how it would work.
 
4007ssc works real well with heavier bullets.

I use it with Hornady 75gr HPBT with very good results.

69gr hpbt is good too.
 
Hornady's 8TH Edition Handbook lists loads for 75gr, and 80gr bullets. IMR's web site lists loads for the same. The powder is a bit slow on the burn rate for the 223 Rem. 26.5 to 27gr is about all you can stuff in the case. That is around max load for the 75gr to 80gr pills, soooo, do your own math for the 69gr Sierra. Velocity will be lower, but accuracy is great, at least it is with the 75gr'ers.

26.0gr with 75gr BTHP is what I am using now, and they are compressed.

28.0gr fills my cases level full.
 
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