Reduce Claymore Explosive Power (#3817)

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## About My PR
Claymores work off shrapnel. not delimbing someone with a shaped blast.
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## Changelog

:cl:
balance: claymores are now less explody - they have increased shrapnel
prowess to mildly compensate.
/:cl:

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code/game/objects/items/devices/mines.dm

@@ -631,8 +631,8 @@
 
 	//customize explosive power
 	var/range_devastation = -1
-	var/range_heavy = 1
-	var/range_light = 2
+	var/range_heavy = 0
+	var/range_light = 1
 	var/range_flame = 0
 
 	//using this to indicate pb

code/game/objects/items/shrapnel.dm

@@ -153,15 +153,15 @@
 /obj/item/ammo_casing/caseless/shrapnel
 	name = "directional shrapnel burst :D"
 	desc = "I May Have Overreacted"
-	pellets = 4
+	pellets = 5
 	variance = 70
 	projectile_type = /obj/projectile/bullet/shrapnel/claymore
 	randomspread = TRUE
 
 /obj/item/ammo_casing/caseless/shrapnel/shred
 	name = "point blank directional shrapnel burst"
 	desc = "Claymores are lethal to armored infantry at point blank range."
-	pellets = 3
+	pellets = 4
 	variance = 50
 	projectile_type = /obj/projectile/bullet/shrapnel/claymore/pointbl
 	randomspread = TRUE