Checking some of my 45-70 brass today I was shocked to see how over length it was. I'm embarrassed to say just how much. Suffice it to say, way over length. So went to my 40 + year old Forester trimmer to trim. The mouth of the 45 case came right out to the very edge of the Forester cutter. This is a fairly new cutting shaft & is sharp but has refused to trim these cases. I have had no problem with it trimming smaller diameter case mouths. I went to my grinder & ground the case mouths down close & was finally able to use the Forester for the final little bit. This works but takes considerably longer. It appears I need to look into a different trimming process for this 45-70 brass. Recommended to trim back to 2.10 . Have any of you 45-70 loaders incountered any problems like this ? .