I never knew or ever heard of a 60mg .22LR bullet.
Here it is : https://www.aguilaammo.com/products/...ad-solid-point.
This thing is amazing. It is a bit louder than 40mg sub sonic ammo in my suppressed Taurus TX-22., but is close to the other subsonic ammo and operates the action positively.
A longer barrel (20" is preferred) but I can hit a beer can at 25 yards most of the time with the pistol but is better in the 16" AR upper.
The elongated projectile has a .22short brass shell but always works.