I have loaded thousands of 9mm, and it has presented some challenges that I haven’t experienced with other calibers.

There are good comments and advice posted here.

But the OP is taking about a 929 eight shot 9mm revolver that uses moon clips and has a barrel and chamber throats of a .357 mag.

My experience with the 986 (a sibling of the 929) has been much different than loading for my 9mm pistols.

Loading for my 986 required a lot more work figuring out how to produce accurate, reliable and lead free loads. At times it was a study in frustration, much more than loading for my pistols.

But it can be done.