I used to be a huge fan of SOH pro, but having more ammo is alot more important to me now. So, I roll with scavenger, and have learned to avoid and hide while reloading. Having to run around and find dead people's weapons have gotten me killed plenty of times as well.
+1, I don't kill a guy and stand still while reloading...you reload when you know it's safe...
There's not many guns I can't use either (Sniper Rifles), but having a weapon of choice on a particular map set up how you want it is a big +.
The last couple of days I have been forcing myself to use other weapons. I was so "entrenched" with the M4 that whenever I used something else in the past it would be for 1 game and I would be like YUCK I suck with this one, LOL.
After about 25 or so games I am like the Scar more and more each day. I find I am decent with it on just iron-sighting which is a surprise as I love the M4/ACOG setup I run with all the time.
I just got the Raffica this w/e so I will have to fiddle with that some as well.
Reloads - I am bad with this one as I always seem to either be reloading or needing a reload right when someone is popping around the corner. Bang I'm dead. Gotta work on that timing.
Wasteland -- this map frustrates me for 2 reasons. Every game I play lately seems to be nothing but a clusterf**k in the main "tunnel" area. I mean EVERYONE goes there and seems to be nowhere else so I am either running around this big a$$ map hoping to find someone to fight with or I have go play clusterf**k in the tunnel with the other 11 people - very annoying.
The other problem on this map is that no matter where I am or what I am doing if I get killed the friggin' system spawns as far away from the action is as humanly possible. This is so annoying as you then have haul you butt all the way back to the front of the map. Dumb spawn system. This has only been a recent thing btw.
SCAR is a great gun, better for medium-long range engagements but not poor anywhere. The iron sights on it are some of the best in the game because they don't obscure alot of your view. What level are you at now?
The M93 is a great MP but it's 3 shot burst, if you don't like the FAMAS or M16 you're not going to like the Raffica.
As for reloads (and this is something I struggle with) don't reload just because you kill a guy. Make sure there's no one else around and get to cover before reloading.
As for Wasteland...it's honeslty one of my favorite maps. I'm not sure why everyone fights for the tunnels...try this next time. Scavenger + Danger Close (if you have it, if not it's not a big deal) + X assault rifle + M203 + Thumper or AT4, stand on a hill just outside of one of the enterances to the tunnels and lob nades in there for a while. They'll either get tired and try a different tactic or you'll get a ton of kills. People like to sit still in there, not sure why as it's a death trap.