Expander Dies for 338?

Cosmic338

Ammo will become Currency
Full Member
Minuteman
Dec 11, 2020
185
167
United States
Should I use an expander die for my 338 Lapua after neck sizing? If so what’s a good expander to get? I see 21st Century offers .0005 increments. Is it really necessary? It seems if it is shouldn’t I have just gotten a FL Size die?