I've seen a few opened up to 223 and 222's as the Hornets were a bit anemic and the couple I've shot were not what I would classify as accurate. If a 223 reamer would clean up the chamber it might be worthwhile at around $700 as any collector value is long gone. Also, the Hornets have a very specific bolt face and bolt nose and once it is modified you'll never find another one to bring it back to original.
And slow twist. So, in .222/223 version, you're stuck with light weight bullets. I think those old Hornets are 16 twist.
The bolt face would need to be opened .028', (from .350" to ,378").
The COAL is more, but don't know if the gun has already been altered to accommodate the .22-3000. That round is for sure longer than the 1.72" Hornet, may be as long as the 2.1" .222.
Lot of questions.
DF
