Our Take - Air Arms S400 ERB


Air Arms 400 ERB


.177 Caliber Pellets
 Pellet Name
Pellet Weight (grains)
Ratings at the Muzzle
Ratings at
10 Yards
Ratings at
25 Yards
Ratings at
50 Yards
 Ballistic Coefficient
Name
Advertised
Tested
Velocity (fps)
Energy
(ft lbs)
Velocity
(fps)
Energy
(ft lbs)
Velocity
(fps)
Energy
(ft lbs)
Velocity
(fps)
Energy
(ft lbs)
Average Energy
Napier ProHunter
7.72
8.00
1030
18
923
15
811
11
671
8
.016
Trophy
7.88
8.10
1034
19
926
15
813
12
672
8
.016
CP Lite
7.90
7.95
1032
19
924
15
812
12
672
8
.016
Accupell
7.90
7.96
1036
19
927
15
814
12
673
8
.016
JSB Express
7.90
7.90
1044
19
943
16
836
12
704
9
.018
SuperDome
8.30
8.40
1009
18
862
13
713
9
532
5
.010
Beeman FTS
8.90
8.20
1016
19
886
14
753
10
589
6
.012
JSB Exact
8.44
9.10
999
19
915
16
820
13
698
9
.019
JSB Straton
8.44
8.40
1024
20
907
15
785
12
634
8
.014
Logun Penetrators
9.50
9.50
1007
21
937
18
855
15
749
12
.024
JSB Exact Heavy
10.33
10.20
988
22
919
19
839
16
732
12
.023
CP Heavy
10.50
10.60
969
22
913
20
844
17
751
13
.027
Kodiak Match
10.60
10.10
976
21
885
18
782
14
649
9
.016
Kodiak
10.60
10.50
967
22
878
18
777
14
645
10
.016

Additional Data: A test of the 400/410ERB's velocity with the gun set on approx, Medium Power using JSB Exact pellets yielded 815 fps (12.4 fpe) Additional Data: A test of the 400/410ERB's velocity with the gun set on Low Power using JSB Exact pellets yielded 545 fps (5.5 fpe)
Special Note: Remember that the adjustable power on the 400/410ERB is like a rheostat. It can be set anywhere between high and low power

Break down of number of shots using a 3,000 psi fill and JSB Exact .177 pellets.
Number of shots

Average Velocity

Average FPE
 0-10
1035
20.0
11-20
1013
19.1
21-30
986
18.1
31-40
955
17.0
41-50
916
15.7


.22 Caliber Pellets
 Pellet Name
Pellet Weight (grains)
Ratings at the Muzzle
Ratings at
10 Yards
Ratings at
25 Yards
Ratings at
50 Yards
 Ballistic Coefficient
Name
Advertised
Tested
Velocity (fps)
Energy
(ft lbs)
Velocity
(fps)
Energy
(ft lbs)
Velocity
(fps)
Energy
(ft lbs)
Velocity
(fps)
Energy
(ft lbs)
Average Energy
Trophy
14.00
13.80
953
28
857
23
748
17
606
11
..014
Accupell
14.30
14.50
933
28
860
24
723
19
654
14
.018
Crosman Premier
14.30
14.40
945
28
870
24
780
19
661
14
.018
SuperDome
14.50
14.50
930
28
809
21
675
15
502
8
.010
Beeman FTS
14.60
14.90
945
30
857
24
754
19
619
13
.015
Napier ProHunter
15.40
15.20
934
29
885
26
823
23
737
18
.028
JSB Exact
15.74
15.80
927
30
876
27
811
23
721
18
.026
Logun Penetrator
 16.00
16.00
931
33
873
27
801
23
701
17
.023
Logun Penetrator 20.5
20.50
20.40
856
33
817
30
763
26
686
21
.028
Kodiak
21.10
21.70
822
33
784
30
733
26
656
21
.027

Additional Data: A test of the 400/410ERB's velocity set on approx. Medium Power using JSB Exact pellets yielded 822 fps (23.7 fpe)
Additional Data: A test of the 400/410ERB's velocity with the gun set on Low Power using JSB Exact pellets yielded 392 fps (5.4 fpe)
Special Note: Remember that the adjustable power on the 400/410ERB is like a rheostat. It can be set anywhere between high and low power

Break down of number of shots using a 3,000 psi fill and JSB Exact .22 pellets.
Number of shots

Average Velocity

Average FPE
 0-10
915
29.4
11-20
927
30.2
21-30
911
29.1
31-40
876
26.9
41-50
831
24.2


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