This is a fairly blunt bullet. The flat area on top is 6.5mm across. The bullet is 14.3mm long, the same length as the Speer Golddot and 0.1mm shorter than the Remington hollow point of the same weight.
The hollow point is 3.5mm in diameter, straight sided and 6mm deep. The sides of the cavity are not pre-scored or pre-segmented.
Straight sides and no pre-segmenting suggests that it will exhibit sub-par terminal ballistics if the target is covered with heavy hair (like a boar or a bear) or denim. The cavity fills up with "fiber". The packed fiber does not exert pressure on the sides of the cavity and, therefore, it does not initiate expansion. Mentally picture stuffing the cavity with a spit wad that you allow to dry out. That is how a cavity packed with fiber behaves.
Tapered sides perform better than straight sides because the packed fiber acts as a wedge.
|An elastomer plug bulges when compressed which should disrupt the sides of the tip, initiating expansion.|
There is a way to "save" the straight sided cavity design. Hornady has been designing innovative bullets with "flex tips". The actual flex tip is a stiff elastomer. Elastomers act like liquids. Pressure on one surface generates pressure on all surfaces that attempt to contain it.
|Picture from HERE|
Note added later: Rainier LeadSafe plated, 124 grain 9mm hollow-point bullets do expand when fired into test media at 1100fps.