The original .22 WCF used a .228" cast or swaged bullet with it's black powder charge.

The original .22 Hornet used a .223" groove diameter barrel and bullet.

Hornady and Speer both make .223" and .224" bullets for Hornets.

The original rate of twist was 1-16", same with the first .220 Swifts all the same rate of twist as the standard .22 Long Rifle rim fire.

CZ .22 Hornet's also have or had 1-16" twists. Mine had a .224" throat tightening to .223" at the muzzle.
It and the my second CZ Hornet were both very accurate with both .223" and .224" bullets, it didn't care.