Thread: Chamber for 223 running heavies with AICS

Originally Posted by Beetroot

I'd just get it throaded for the 80 ELDMs.
If that's what you plan on shooting you may as well get the best performance possible. They are the same price and seem to be less popular so should have less competition trying to source them'.
If you want an alternative bullet option the 73gr ELDM and 75 BTHP have reasonably good BCs and are less sensitive to seating depth as they have tangent ogives and are designed to run in AR length magazines.

I tried to get 75gr Amax and 75gr ELDMs to shoot in my Tikka but never had a huge amount of luck.
I developed a load for the 75 BTHP and it shoots pretty well. I then read that the 73gr ELDM is basically the same bullet so tried them out, exact same load, seating depth, etc, and they shot really well.
The 75BTHPs are pretty cheap and available in bulk if you are wanting a cheaper bullet alternative.

I had a 223AI project planned that kind fizzled out, maybe next year will take it up again.
Was planning to shoot 88 ELDMs and the 75gr BTHPs for a cheaper bullet. The 88s take up a reasonably bit of case capacity loaded to 2.550" (65mm) but the BC is amazing on them so was going to give it a go.

Thanks for explaining that, I didn't know about the different ogives. I've also found the 73s to work well in two different 223s. I already have a very good 224 Valkyrie that launches the 80 plus bullets with complete authority but it is a heavy chassis type configuration and I'd like a 223 that I will shoot heaps cause it's "just right" to both hunt with and capable of gong shooting to 600M - a "cross-over"