Talk me into using the 15cm on the Borsig.

I can't justify using the 15cm on the borsig, because of the reduced DPM and Pen. My buddy runs a 15cm on his borsig, and I always hear him complaining about "bouncing off the side of a <insert poorly armored vehicle name>"

I got my Borsig 3rd MoE through the use of the 15cm but i was in a platoon of tier X's and i was spamming HEAT rounds.

The 12.8cm is more of gun aimed at snipers to ruin people while having a gun that pretty consistent. I mean its the same 12.8 from the E-75 so basicallly any tier that you are matched up against you should have no problem with if you remain hidden. I do like the 12.8cm and mainly because of the APCR rounds, This is extremely useful in this tank because you will have less lead on targets because the shell velocity is far greater than that of AP rounds which is absolutely Ideal if you plan on sniping.

The 15cm is more of a gun if you want to piss off players really because 750 alpha with turret and 335 HEAT pen lol. The 15cm is great at excelling in situations where you can abuse the tanks low silhouette to hide in small undulations and small parts of cover. Its also very useful for brawling because you can be sitting behind players come out of cover with HEAT loaded and put a very unforgiving shot into another player. The shell velocity on this is absolutely crap (slow) and the shell tends to derp into the air then land on targets sort of like artillery. This is a pain in the rear end when you spot a long range target, I sometimes wish i had picked the 12.8cm for this reason.

To be fair you couldnt go wrong with either of these guns but as a general opinion.

12.8cm - Sniping.
15cm - Brawling.

Tell him to stop firing HEAT rounds then lol 

HEAT + Spaced armor = 90% of the time 0 damage. 

Its not so much that hes bouncing half of the time, Its more of a case that hes actually either penetrating the layer of spaced armor and doing no damage because of the characteristics of HEAT rounds. 

The clue is in the name (H.E) - It explodes on impact. 

You still don't need AP, because 6s and 7s get demolished by HE. If you don't pen, you're still going to take a large chunk of their health and leave them with major module and crew damage. I could see maybe carrying 1 or 2 AP for spaced armour. But no more than that. Shooting weak spots with a 0.40 accuracy gun from any distance is a useless endeavor. You either need the guaranteed damage of HE, or the high pen of HEAT. I generally fling HE at distance at the beginning of the match, then shoot HEAT from medium range.

Some men just want to watch the world burn

XD by splashing enemies for 400? waiting on a gun with a 20 second reload 0.4 accuracy and the shell velocity the equivalent of the P.IV H's derp gun when you couldve fired AP and shaved off half the health of a tiger or completely one shot a tier 6. 

the 12.8cm is more consistent of the 2 and the most useful when you get tiered up. but the 15cm is the most fun, especially in t8 games.

I use both. one for stat padding and effectiveness, the other for fun.

i dont need to try it, I have 3 MoE's on my borsig and i dont like wasting money on targets to go bankrupt in my garage. If you feel the spamming of HEAT is necessary go for it lol i aint going to persuade you not to  but i do think its a donkey move knowing you could just resolve the issue by firing AP at tigers etc while making money and having fun. 

The 15 cm is a derp gun. You play it like a derp gun. You've never used it, yet you're telling me playing the 15cm like a derp gun is the wrong thing to do. You play the 15 cm to have derp fun while also having good camo. Keep using the 12.8 cm. But if anyone wants to use the 15 cm, the way I'm using it gets me the best results.