I just went on Lee, Lyman and RCBS web sights, and they no longer list any Bullet sizers smaller than .224".

I have an older Lyman H&I die in .223. You will just have to find yours like I found almost all of mine. Find someone sell old/used reloading equipment. and go through box after box. I have between 40-50 sizers and carry a list of what I have, so I don't end up with repeats. I also did have 4 sizers 2 Lyman, 1 RCBS, and a Starr! Along with about 8 of the Lee sizers.

Usual price for used H&I dies is $5 although they always are asking $10-12. Find 4 you want an pull out a $20 bill, they take it every time!

If the earlier suggestion of .224 is still too big, Drill a smaller hole in a chunk of any metal 1/2" or more thick, and lap out. Then you can pan lube raw castings, or resize .224 sized bullets.

Hornady used to make .222 and .223 jacketed bullets for early Hornet and Jet. They are still cheaper than factory ammo!

Ivan