Okay guys after much research and coming up dry here is my problem (i know i could call Whidden but i want to try anyone with first hand experience first). Here is what i'm wanting to do...Uniform the Meplat of the Matrix .277 175gr bullet, then tip it with the Whidden tipping die. Here's the problem, the Meplat trimming bodies and Whidden collets are only availlable in 6.5 or 7mm calibers. Has anyone Meplat trimmed or Whidden tipped their .277 cal bullets? What set up did you use?