Sierra .22 55gr Semi Point No 1350
SIERRA .22 CALIBER (.224) HIGH VELOCITY 55 GR. SMP
In rifles, the Semi-Point design allows this style of bullet to expand faster than a Spitzer style due to a generous amount of exposed lead at the tip and the slightly larger opening in the jacket. Capable of outstanding accuracy, this bullet can be an excellent choice for varmints and small game in many early 22 centerfire rifles, which have slower twist rates than those commonly used today. The Semi-Point shape reduces bullet length for a given weight, making the bullet easier to stabilize. The penalty is that a Semi-Pointed bullet has a lower ballistic coefficient than a Spitzer-pointed bullet of the same weight. This bullet can also be used in modern rifles with faster twist rates.
In handguns, because of the velocity constraints caused by short barrels, the primary usefulness of a Semi-Point bullet design is in cases where the twist rate may not be adequate to produce the best accuracy with a Spitzer bullet. The relative shortness of the Semi-Point design can improve bullet stabilization and accuracy. This bullet will not give explosive expansion at longer ranges, but due to the wide jacket opening and generous exposed lead tip can be useful at shorter ranges for fur bearers whose pelts are to be preserved.