If I may......neck down 223 brass to 20 cal......the dies I use are.......
223 FL die to size body w/o stem.....
Redding 223 bushing die with .227" bushing
Forster BR seater for the 204 Ruger......(or 223)
brass of your choice........Rem 7.5 primer for me.......your favorite 223 powder.........
I use H4895......25-26 grs.......moly 40 V max........expect 3850-3900 fps..p/dogs die fast...
Its 'Practical' most guys have 223 dies of some sort....Benchmark also works very well....
