Arbor press seater

375 rum. I did see anything bigger that 338 on the website?

I posted the link above. The 375 CT die is relatively new. When I first inquired with them about custom 375 dies, they said they didn't have one large enough. Now that they have the larger seater for 375+, you might try calling them to see if they can provide a blank for their larger size die.
 
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