Strangely enough, with all my specialty ammo, (22 K-hornet, 300 Whisper, 338-08 {had it made 3 years before the 33 Fed came along}, 9.3x74R, and the .375 HnH), I've always de-primed prior to resizing, use a Lyman "M" die for neck belling, and a Lee hand prime, all before charging the case.
This has given me excellent accuracy, consistent (to my mind a t least) bullet pull and piece of mind.
None of the above rounds listed above get shot up in the several hundred per week, so though this process is slower, it works for me.
I'll likley use the same procedures for my .416.
