Slow powders in .223??

[doghawg]

I'm wondering if any of you have tried loading slow burners like 4350 or 4831 in .223? I've got a couple of opened jugs that are from back in the 90's and just haven't been loading much of these. After a few decades of prairie dogging I've discovered a bunch of odds and ends and partial dust covered boxes of J-words on the back of my shelf and want to use these up for plinking loads. I've been loading for many years but never tried a combination like this.

These loads would be shot in a Henry single shot or Tikka bolt so function would not be an issue. Again, my purpose would be plinking and ringing a swinger etc. so Hornet level performance would be just fine. Has anyone gone down this road?? Thanks

[DDriller]

100% fill will get you around 2200 fps with 4350 and 1975 fps with 4831 with 55 grain bullets -- burning only around 70% of the powder according to Quick Load.

[toallmy]

I tried IMR 4350 and it shot well ( 2 inch at a 100 )but heated up the barrel and left a little powder in the barrel , this was with the RCBS mold .
Honestly I haven’t found much I couldn’t load in a bottle neck case with 4350 / 4831

[243winxb]

Have not loaded any. IMR data from 1999. Use a drop tube to load the powder, may help the compressed (C) loads.

[doghawg]

Thanks for the responses. With pressure being that low it might even work to use up some old CCI 450 for better ignition?

[243winxb]

A full case with a mag prime will produce more gas output. The bullet could move sooner, if bullet hold, neck tension is light.
Here, a crimp from a Lee Factory Crimp die may produce better accuracy.