Have a couple rifles that could go this route. Too much fuss for little gain? I know it could slow down case trimming. 80-100 fps increase?
With an improved case, yes trimming will be reduced, however the brass will flow to the shoulder neck area thus thickening the brass at this juncture. Two things happen, you will produce a 'donut' inside base of neck thus requiring reaming, especially when using a bushing set up to size, or if using a Collet die the 'donut' will be on the outside requiring the neck be turned occasionally to preclude difficult chambering.
If you want a bit more velocity at the same pressure, and the two mentioned are short action, (this for Tikka T3 owners) you can change the bolt stop and magazine to one that accommodates a 3.34" oal , depending on the throat dimensions the loaded round can be up to 0.540" longer, if length of bullet allows this.
A 7.7 twist 243 Win is a very nice set up with bullets in the 105 to 115gn range.
AI is to much hassle for the gains that are realized in the 243 and 7mm08.
