To me, being a former racer, AI's are just like hot rodding a car.
Some cars or cartridges respond well to hot rodding. Other are a waste of time.
Now days there are cartridges that can do the job you want without hot rodding,but wheres the fun in that.
The AI's I have or have been around are alot of fun to work with just don't go over 5% more powder,as stated in Ackleys book, than the parent cartridge and always be looking for pressure signs. My 25-06 AI is a real pain, didn't gain much at all. The 30-30 AI as a lot to gain, it can equal a 300 savage with ease but will never be a 308