@DontSilenceMe
Have you actually used a fully equipped R301 with all the addons as 'Level 3'?
With the Level 2 or Level 3 Extended Mag, you have 25-28 rounds!
Have a look at this Wiki;
https://apexlegends.gamepedia.com/R-301_Carbine
Yes Light Ammo is Low Damage, but because of the Speed of the R99 and R301 with Level 3 Mags on them, you hold down that mouse and you SHRED people down! Be sure you are doing Head Shots and watch them drop! Of course make sure you have A LOT of Light Ammo!
When I play with an R301, it's all I'll carry so I can carry like 300 Rounds of Light Ammo.
Get an R301 equipped with all the goodies and you'll see how powerful it can be. 😉