Thread:Jenesis33/@comment-26460664-20150717023322/@comment-26289480-20150722062010

Ok lets go one by one.

1) 20.3 (type 1) is useless, eventually you will pretty much always use no2 and no3. So yeah feel free to dismantle them.

2) Upgrade equipment to next type is very rarely used, bec the huge cost on screws. OPretty much you will never do it. (Only once maybe, upgrade a 94 fire director to a 10CM HA+FD, also known as Akizuki cannon)

http://kancolle.wikia.com/wiki/Akashi%27s_Improvement_Arsenal

Lets use no 20.3 type 1 for example, first it is not needed to upgrade this bec you will have a lot of no 2 after you Kai 2 a lot of CA (mostly Myoukou class). I have 12. (and you dont need 12 for a fleet thats for sure). So there is no point upgrading no 1 to no2. Also because no 2 is still pretty bad comparing to no3. So you will eventually just use no 3.

Even for some reason, you want to upgrade. Lets see how much it will cost you:

Each time from 0 to 6. you need 2 screws, assume you dont fail, (unlikely to do so) you need 12. Then 6 onwards to 10, you need to eat 1 20.3 (type 1, it is not a big deal here but can be , you will see). and because 6 to 10 has high chances of fail to upgrade, you need to use ensure. Each ensured upgrade takes 3 screw for 20.3. So thats 12 more screws.

Then Max evolve ensured takes 10 screws. Congraultion you got a no 2 cannon. for total of 12+12+10=34 screws. (which is probaably more than what you can get in a whole month.. screws are very limited in supplies, mainly from monthly and weekly quests)

Lets look at 91 AP shell, 0 to 6 only takes 1 scerw, thats not bad, 6 in total. 6 to 10 takes 2 ensured. so thats 8. Max evlove takes 9. so total of 6+8+9=23 screws. Not that bad you say but wait:

Each upgrade from 6 onwards need to eat 1 91 Ap shell. And evolve needs to eat 3. So yep you need to have 7 spare AP shell to be eaten. Before you can get a 91 ap shell to a type 1 shell.

The other side of coin is the stats is just not worth it, 91 AP shell even at +4 is about same as a Type 1 AP. And a +9 91 AP shell is a lot better than Type 1 (+0) Shell.

But wait you say i can just upgrade Type 1 as well. Yeah good luck. Each time Type 1 Ap upgrade needs to eat 2 91 Ap shell, have fun!

SO in the end, there is no point upgrading anything. Bec the way modfication works is on square root of (+ number) so even +1 is very very good. +4 is ideal (square root to 2). Plus 9 is best, but that takes time, Bec generally +6 onwards need to eat stuff, and takes much more screws.

Thats why i say just get +4 on your 20.3 cm No 3.. and +6 on 91 AP shell, (before 7 91 ap shell only takes 1 screw each time and no need to eat other shells)

3)20.3cm is better than 15.5 cm for CA because of 2 reasons. First, 1 FP is better than 1 Accraucy. Simple as that. Unless you have very low level ships. At high level ships, hitting the enemy is no problem, so no need to plus accraucy, having more FP never hurts, (until you hit day time maximum of 150, which CA will never hits, thats why modfiying CA guns is so good, bec they can always use the extra fire power).

You say oh, sometimes my BB has more than 150 FP, is that overkill? No. bec at T disadvantage and Head on Engagment your ships suffer from FP penalty (80% in Head on, 60% in T dis). So you need 187 FP to hit the Head on max of 150 FP. (you can avoid T dis with Saiun so not generally worried about)

And when your ship get Chuuhou (Yellow/orange) you loss FP too. So having more than 150 FP is fine in most cases.

Second reason why CA should use 20.3 CM is bec of weighting bonus. CA recieve a 20% accraucy bonus in night battle ( I repeat night battle only) while equipping with 20.3cm.

So yes Firepower makes up for accuracy easily. Unless you are training in like 3-2A, where any CA can easily have enough FP to kill the enemy, but you are red faced allt he time, so you need accruacy.