Replace your default SNIPER RIFLE data line with this one :

#$ SNIPERRIFLE		INSTANT_HIT	240.0 100.0	358	-1		6	sniper		6	 125	0.7  -0.05  0.2 	0  0	0.75 1.0 	 6 20  7	6  20  7  99	A014
$ SNIPERRIFLE		INSTANT_HIT	150.0 100.0	358	-1		6	sniper		6	 125	0.7  -0.05  0.2 	1  300	1.0	 1.0 	 6 20  7	6  20  7  99	A014
#$ SNIPERRIFLE		INSTANT_HIT	260.0 100.0	358	-1		6	sniper		6	 125	0.7  -0.05  0.2 	2  999	1.25 1.0 	 6 20  7	6  20  7  99	A014
