For some reason, I like to have a penetration/impact/power rating for weapons and not having infantry and vehicle armor saves on different charts. Weapons will still have a FP rating determining the number of shots/bursts/etc, but the chart will be used for armor saves.
Any comments would be appreciated!
Edit: uploaded a screenshot of the chart.
I've created a all-in-one armor save chart which includes a range of armor values (both infantry & vehicles) and weapon power. I haven't play tested this yet, but plan to in the near future.