why am i doing this

code/modules/projectiles/gun.dm

@@ -153,8 +153,8 @@
 		shake_camera(user, recoil + 1, recoil)
 
 	if(stam_cost) //CIT CHANGE - makes gun recoil cause staminaloss
-		var/safe_cost = clamp(stam_cost, 0, STAMINA_NEAR_CRIT - user.getStaminaLoss())*(firing && burst_size >= 2 ? 1/burst_size : 1)
-		user.adjustStaminaLossBuffered(safe_cost) //CIT CHANGE - ditto
+		var/safe_cost = clamp(stam_cost, 0, user.stamina_buffer)*(firing && burst_size >= 2 ? 1/burst_size : 1)
+		user.UseStaminaBuffer(safe_cost)
 
 	if(suppressed)
 		playsound(user, fire_sound, 10, 1)

code/modules/projectiles/guns/ballistic/shotgun.dm

@@ -44,10 +44,9 @@
 	if(HAS_TRAIT(user, TRAIT_FAST_PUMP))
 		recentpump = world.time + 2
 	else
+		if(!user.UseStaminaBuffer(2, warn = TRUE))
+			return
 		recentpump = world.time + 10
-		if(istype(user))//CIT CHANGE - makes pumping shotguns cost a lil bit of stamina.
-			user.adjustStaminaLossBuffered(2) //CIT CHANGE - DITTO. make this scale inversely to the strength stat when stats/skills are added
-	return
 
 /obj/item/gun/ballistic/shotgun/blow_up(mob/user)
 	. = 0