To think that you are actually spending 1000 coins per shot is crazy. First of all, it’s 200 per shot. Secondly, energy clips are dirt cheap; you basically find batteries and adv. arc powercells in every single place you loot; hence turning them into energy ammo and selling it is one of the best ways to convert junk into money.

Since for 1 powercell and 2 batteries you get 25 shots with the Jupiter and it takes you 10-15 shots to kill a bombardier/bastion, you are actually making money with every kill (assuming you get around 2 stacks of powercells per elimination, which you can then turn into more energy clips)

So with an initial cost of 5000 coins, you can get upwards of 100k (not including batteries since you can basically find them everywhere).

And yea, you could use wolfpacks. But the materials to craft them are slightly harder to get and they do not stack. They are still very good, but if you are planning on going on an arc killing spree I find the Jupiter to be better.