I checked my 26 Nosler brass with an RCBS #35 shell holder, which is recommended and with an RCBS #4. I load for .38-40 so, I have #35 shell holders. The .38-40 has a thicker rim than magnum rifle brass. The shell holder bevel caught the extractor groove and didn't allow the 26 cases to sit down flat.
The brass was hard to fit in a #4 due to the case extractor groove not being deep enough. I took some off the #4 shell holder lip with a Dremel, which allowed an easy fit. I'm going to leave that modified #4 shell holder with the 26 set up. That's the way to go rather than the #35, IMO.
DF
