coastguardchas Wrote:I had a custom built Grendel by a very well known company that after resizing Alexander factory rounds with a RCBS sizing die would not chamber. the case body was not reduced enough. tight chamber. after discussion with the builder I sent him a fired case and he had another sizing die chromed to reduce the case body to chamber. not happy about that , but just another step in reloading. resized round work fine. Chas