For me it is whatever rifle I own which just wont shoot well lol. I don't think cartridge really has much to do with it unless you decided to build a rifle which requires forming brass and then decided you do not like forming brass. Assuming a rifle "CAN" shoot as good as you want it to, then I think all cartridges are likely equal in terms of handloading. Again, this is assuming you aren't doing a wild cat which means you must form brass or something weird. Just my two cents.What's you least favorite hunting rifle cartridge to handload for among rifles owned and why?
20 practical. Those little bullets suck. I pinch my fingers constantly.
I loaded for a 17 Rem on an original Rockchucker.What's you least favorite hunting rifle cartridge to handload for among rifles owned and why?
I share your frustration with the 17m Rem. I load my wife's Rem 700 in that caliber. She liked it better than the .308 I got for her. With large hands, I finally resorted to some electronics tweezers that hold the small pill. Saves the pinched fingers and dropped projectiles.