Yes, I like making my own stuff if the end result is as good or better than I can buy, but a hard day's work to produce a result obviously inferior to what I could buy for 20 bucks doesn't sound like fun to me. After all the process of reforming the cases one by one in repeated steps, turning down rims and bases by crude and inexact means and trimming length repeatedly there is yet another step needed to make brass to properly fit the Nagant chamber and barrel throat, they will need to be inside reamed to reduce the neck thickness to Nagant specifications.
If factory loaded ammo comes with .308" bullets then that is what you have to accept when firing factory loaded ammo. One of the great advantages of handloading is that you can use bullets which fit the bore and all commonly available .32 pistol bullets run .311-.312", perfect for the Nagant bore. Who knows what the diameter will be a of bullet first resized buy running the loaded ammo back into the full length size die and then fired through the extra thick case mouth jammed tight in the Nagant barrel throat? And who knows what the pressure will be?
That seems like a heck of a lot of work to end up with something of questionable safety and efficiency when factory loaded Nagant ammo is one of the least expensive rounds you can buy and you then have proper brass which you can reload with readily available bullets.
Maybe it's just the inherent weirdness's of the Nagant revolver which causes people to get all weird in reloading for it.