This gives you a basic understanding in the different caliber guns in relations to the Bushmaster's (25,30,35mm).Re: 25mm guns. I remember reading on wikipedia (yea I know) that upgrading to a 30mm bushmaster increases firepower by 50% for a 20% increase in caliber size at 70% parts commonality. 30mm seems to be the way forward and would be an easy relatively cheap upgrade for both the LAVs and RNZN, but would it be warrented given the amount of action we see? Not sure what the NZ LAV upgrade is likely to entail, but wouldn't be too surprised if its a limited upgrade. Would be interesting to see us relook at our whole turret design/options. Again, the articles in previous issues of DTR are a great read regarding this. Would sooner see us incorporate a precision missile capability than a large calibre gun.
Fiji recently recieved weapons shipments from Russia, which included RPGs (as well as 5.56mm AK101s). This should be considered. Give their history of instability and coups, some of these may fall into the wrong hands.
WARFARE TECHNOLOGY: ATK Bushmaster III Automatic Cannon
Overall gives a good impression that the 25mm is absolutely useless today, let alone into the future. 30mm is good and useful but does have difficulties against some upgraded vehicles (BMP-3+) while the 35mm doesnt so if your looking for future use then 35mm would be the logical choice, However will be interesting to see how the 40mm comes along.
Regards, vonnoobie.