https://mech.nav-alpha.com/#1f537ef3_COR-BR I keep running into issues with the 2xUAC10 and HPPC build. The one UAC10 is way off to the left and down in the arm. So often in a brawl I'm hitting teammates or structures, or I have to go way out to get the arm clear. So I put this together with the thought that whenever I'm pointing at something I don't have to worry about convergence. I've only run a couple games, but I'm not disliking it so far. EDIT: Updated the build to Carlo's suggestions.
4 ton of MRM ammo for 1xMRM20 is way overkill. 1 ton and full ammo skills is enough for 20 strikes. Drop 2 ton of ammo, RL, half ton of armor and you can fit a bigger MRM30. https://mech.nav-alpha.com/#1f537ef3_COR-BR
I like the way you think. I threw the 20 on there because I had one and wanted to test the idea. I'll rework it to your idea tonight. Thanks!