I've had a set of custom Whidden dies for .338LM Improved 40 for about 7 years now and they've been fine, but the seating die has increasingly been giving me consistency issues. The symptoms are that if I load say 20 rounds, the first 5 or so will seat consistently, then slowly it'll start seating long little by little. As I turn down the micrometer to adjust, nothing changes...then all of a sudden I feel a big change when I raise the ram. I've pulled it apart several times, cleaned it, but the problem persists. I even experimented using my vanilla .338LM Redding seater but I got some ugly runout.
It's frustrating and I'm ready to ditch that die and get something new. Any recommendations for who to get a custom seater from? This wildcat is still my preferred ELR cartridge, so I plan to shoot it a lot longer.
It's frustrating and I'm ready to ditch that die and get something new. Any recommendations for who to get a custom seater from? This wildcat is still my preferred ELR cartridge, so I plan to shoot it a lot longer.