Originally posted by JB73
realistically you will get better performance from the 2 cannon ammo load because of the decreased weight....
2 x shvak weighed 42Kg each = 84Kg
3 x B20 weighed 25kg each = 75 kg
In fact the 3 cannon had ammo box/belt room for 170 rnds per gun but rarely used it mainly loading 130 to 150 rnds per gun.
I do not know the total weight of a 20 x 99 round and shell. but if it was 1.5 the weight of the projectile (97 grams) @ 150 grams then the 9kg saving between the 2 x Svak and the 3 x b20 would allow an additional 60 rounds.
I think we can assume that the weight of a 3 x b20 @ 150 rpg is pretty much the same as a 2 x Svak at 200 rpg.
re the 3 cannon advantage.
As a very regular La7 pilot of average capability I can say that the 3 cannon is a significant benefit over the 2 cannon.
Its the difference between several kills and many assists.
Edit
There is another reason why the two ac may be split in future patches. HTC are vastly improving the object shape accuracy as they upgrade each ac. Exentually they will come to the La7 and the fuselage covers over the cannon are quite different for the 2 and 3 cannon versions.
This would be the time to split the La7 into eg La7_44 and La7_45