Hey dude - Proving grounds was my second every game and it's ace!
https://www.facebook.com/HALOMILLPROVING
The nice thing is that it's a rolling game, so you can drop in and out as you want.
No set lunch time or anything like that.
The only potential issue is if you need to hire kit it may already all be reserved.
Last time I went there were 198 players! So much fun!
If you decide to go, gimme a shout. If not, I'll be there next time too ?
Thank you, will zap you if im going