lately me and some friends of mine have been playing octagon matches just as a quick warm up. Seems to work well to dial in aimig and straffing. Plus its pretty fun as its straight up carnage. Who else like to warm up like this with friends or what do you do to warm up if feeling a little rusty?
I’ve been using octagon quite a lot recently because I’ve been playing a lot of BF4.
P.s have you installed he octagon? It’s a really neat octagon that you can get off of my profile, try it out! 
P.p.s 1v1 me skrub h2octagon pistols only m8888