.223 barrel is WRONG! The .223 grove diameter is typically pre-WWII based upon the wildcat development of the Winchester .22 Centerfire, they used .22 rimfire barrels due to availability and low cost. The Browning 1885s are recent manufacture.
"The 22 Hornet's ancestry is generally attributed to experiments done in the 1920s using the black-powder .22 WCF at Springfield Armory. Winchester adopted what had so far been a wildcat cartridge in 1930, producing ammo for a cartridge for which no commercially-made guns yet had been built. It wasn't until 1932 that any company began selling commercially-made guns for the cartridge. Older guns generally have a slower twist rate of 1-16" of barrel length for lighter bullets with a .223 caliber dimension. Newer guns feature a faster 1-14" twist for 40 to 45-grain bullets in the more standard .224 caliber." |
.22 Hornet
History
Developed by American wildcatters in the 1920's, the .22 Hornet was adopted and officially introduced by Winchester in 1930. At the time the most commonly used rifle for converting to .22 Hornet was the 1922 Springfield .22 long rifle. Because the groove diameter of the .22 long rifle measured .223”, the Hornet was loaded with .223" caliber bullets. The Production of commercial rifles eventually saw the change from .223" to .224" groove diameters, today,
Hornet projectiles are still offered in either .223" or .224" calibers.
Also, I would not recommend using a CCI 450 - unnecessary. Try a pistol primer for such a small case, many find improved accuracy. I have a semi-custom HW in .22 Hornet, 1-16 twist, .224 barrel.