Haven't tried it myself, but if you're looking for something extra stable, there are such distribution sleeves that are used with anchor mass in hollow brick.
https://www.fischersverige.se/sv-se...karhylsor/injektions-ankarhylsa-plast-fis-h-k
https://www.fischersverige.se/sv-se...karhylsor/injektions-ankarhylsa-plast-fis-h-k
Imagine two scenarios.
1 that you do not encounter cavities, and then it's as usual with fastening according to your preference in the form of plugs, expansion fittings, or some kind of chemical product
2 that you encounter troublesome cavities, and then it's solved by either not drilling much further and using anchor compound (a bit of a gamble, but you often notice if you've just encountered a little cavity or more...) or drilling larger holes for a sleeve according to a previous post
If you have tools at home for both, it shouldn't be a problem.
1 that you do not encounter cavities, and then it's as usual with fastening according to your preference in the form of plugs, expansion fittings, or some kind of chemical product
2 that you encounter troublesome cavities, and then it's solved by either not drilling much further and using anchor compound (a bit of a gamble, but you often notice if you've just encountered a little cavity or more...) or drilling larger holes for a sleeve according to a previous post
If you have tools at home for both, it shouldn't be a problem.