. I tried the XTP but the thickness of the brass caused the bullet to deform my brass before I got it seated deep enough.
Of course the 250 gr XTP is .452 rather than .451 that normal .45 ACP is so when I load it in my .460 Rowland brass I get a very light bulging of tha brass. I assume you are using .45 Super brass. Perhaps it has a little thicker wall thickness than the .460 Rowland brass as you seat it deep enough for the 250 gr XTP.
A possible answer if that is the case is to use Rowland brass trimmed to Super length. I know that Bearbait has done this in the past for his Super.
