I modified another 5 cases today in my lathe. I loaded those and the 5 I modified yesterday with 4.4 grains of Unique, a CCI LPP, and a .358 160 grain LSWC from Matt's Bullets. I also loaded another 50 in unmodified brass using Sellier & Bellot SPPs.
The round on the left is an unmodifed case. The 2 on the right are modified.
You'll note that there is still plenty of brass around the large primer.
I should be able to try them next weekend.