After fully mastering all rifles, other than the LR, I've moved into using it. While scoping at long range, the gun is average. It doesn't have very much stopping power, as compared to other guns, and opponents easily get away. The rate of fire improvement helps a tad while scoped, but the scoped part isn't truly the issue.
While not scoped, after the recent title update, I might as well simply lay the LR down and have the enemies assassinate me or simply blow my brains out. No fun is to be had with this weapon without scoping and at close range. It takes five shot bursts to kill someone, not scoping, compared to the new and improved four shot burst from the BR. In essense, it is 100%, completely useless. I now lose duels with all guns and very rarely get a successful kill. Going up against ANY weapon at close range, keep in mind that the main issue is that this is all while not scoping in, it is basically inevitable that one will lose a duel. DMR, BR, AR, Carbine, Suppressor, and even the storm rifle, one will lose if they are using the LR.
Having a k/d of 1.64 after mastering the Carbine and moving onto the LR, being +7,000 kills, I'm now +6800 just from using the gun for about ten hours. It's absolutely ridiculous.
I know that not many people use the LR, but take a stab at it and try out it. If its just me, which I highly doubt, then disregard this post. Fully use it, though. Make a load out based around it, and use it for a solid sit down of gameplay. See what you think. Thanks for reading.
TLDR: The LR is garbage when not scoped in and also needs to be made a four shot burst kill so that it can actually compete with the BR or any weapon for that matter.