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[Timelord]

I see. I still don't understand why there would be a steel ball bearing mounted in the nose.
1) The pellet is more akin to a slug & therefore will have a higher weight than a conventional pellet. This will result in two things
a)The slug/pellet will fly more slowly due to absorption of some of the kinetic energy in its initial acceleration
b)This will require higher pressure air rifles to maintain an adequate velocity.

2)The slug/pellet as shown, being heavier than a conventional pellet will have much more mass impact on the target. Being soft lead it will dump all this energy into the target. The soft lead will expand anyway as a part of this process.

The reason I do not think the ball bearing is sound logic - other than the points already mentioned, including the one about the pellets not being as accurate - is because the ball bearing will do a few things
1) Decrease the nose weight
2) Act as a hollow head point in relation to the lead mass, but possibly not quite deforming as uniformly as just a cavity would.

Why would you need a hollow point in a .22 air rifle pellet? Genuinely - is this a valid configuration (not being an airgunner)?
If the ammunition is for hunting small game - especially in a survival feed me scenario, then hollow point expanding ammo of a small calibre is likely to make a real mess of the game you wish to put in the pot. Is this correct? Can the .22 pellets be used ok normally for larger game?

I know a bit about firearms ballistics but not for airguns. It should be similar, but I am interested to know from someone who does. Thankyou, TL.