I doubt if you'll get much more speed from the AI. More speed is generally minimal unless you are strapped to slow powders and/or increase the barrel length. I've owned AI calibers from 220AI Swift to 30-06AI and got nothing in return for the efforts. Handloader (US) magazine did an article about increasing case capacity and it was found that velocity increased or decreased, percentage-wise, at 1/4 the increase in powder capacity. According to their findings, if you managed to squeeze in, say, 12% more powder you'd perhaps net 3% increase in velocity if all other things remained equal.
As I have a Pressure Trace unit for measuring chamber pressures and pressure curves while the bullet travels the bore, I tend to think of things in relation to pressure, not velocity. In a given bore, pushing a given weight of projectile, it takes "X" amount of pressure to reach a given velocity. Plain physics. Now, if the pressure were reduced by increasing the volume of the case, the resulting velocity will drop in proportion to the increase of case capacity. So. We add powder to reach the previous pressure and attain the previous desired velocity. Ok. We just added powder to gain back what we lost which is Ok, I guess. But what if the cartridge was already loaded to maximum allowable pressures?? Can we add powder? Nope. Not safely. We need to change powders if we want more speed, or we need to follow Weatherby's play book and either free-bore the chamber (throat) and/or increase barrel length to add speed while keeping pressures at an allowable level.
This all sucks to hear but it's the truth. My 30-06AI got no increase in velocity at all. Ackley once wrote that cartridges that are already operating at maximum efficiency, and pressures for the weapons they are chambered in, are poor candidates for Improving as little is gained. I tend to agree but that's JMHO. ~Muir