Quote:
Originally Posted by ArchAngelCD
Like said above, if they are actually 18 BHN that is more than hard enough for full power 9mm ammo. With bullets size does matter so if they are .356" that are probably the correct size for current 9mm pistol barrels.
|
There are nominal dimensions, then there are actual production dimensions, and they rarely ever match. For .356 to work properly without leading, the barrel bore should be .354 to .355. If the barrel is polygonal, all bets are off.