Magnum Springers, do they perform as advertised? I tested mine.

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AlfredB

Member
Aug 3, 2021
16
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Texas, United States
Hello everyone,

long time reader that just signed up, I value the knowledge of the forum, so here's my contribution. I tested my Magnum springers/IGT to see how they did with different pellets from the lightest I had to the heaviest. they are all .177 or 4.5mm.

Magnum Springers/Gas ram



Rifle: Advertised speed/Power:

Gamo Hunter Extreme Pro .177 1650 fps with alloy pellets

Gamo Raptor Whisper .177 1300 fps with Gamo Platinum PBA

Diana 460 .177 1050 fps/ 27 Joules with lead pellet (19.9 fpe)

Diana 54 .177 975 fps/ 24 Joules with lead pellet (17.7 fpe)

Diana Magnum Premium .177 1070 fps/ 28J with lead pellet (20.65 fpe)

HW97K .177 951 fps/20J with lead pellet (14.75 fpe)

Hw85 .177 951 fps/20j with lead pellet (14.75 fpe)



Pellets tested:



I tested strictly for speed and power, everyone knows these guns are most accurate with the Field target trophy 8.64 and those type style pellets.

This is more for fun to see the limits of the guns tested to see how fast and slow I could make them shoot. I shot 5 shots with each pellet here are the averages.



Gamo Hunter Extreme Pro : fps/fpe (joules)



Winchester Maximum Velocity 4.32 grain -- 1612 24.9 (33.7j)

H&N FTT Green 5.56 grain -- 1425 24.0 (33.7j)

RWS Diabolo Basic 7.00 grain -- 1235 23.7 (32.1j)

JSB Exact 7.33 grain -- 1220 24.2 (32.8j)

H&N FTT 8.64 grain -- 1114 23.85 (32.3j)

H&N barracuda 10.65 grain -- 993 23.36 (31.7j)

JSB Beast Diabolo 16.20 grain -- 686 16.94 (23.0j)





Gamo Raptor Whisper:

Winchester Maximum Velocity 4.32 grain -- 1253 15.1 (20.4j)

H&N FTT Green 5.56 grain -- 1151 16.3 (20.1)

RWS Diabolo Basic 7.00 grain -- 993 15.3 (20.7j)

JSB Exact 7.33 grain -- forgot to test?? sorry

H&N FTT 8.64 grain -- 878 14.8 (20.1j)

H&N barracuda 10.65 grain -- 795 14.98 (20.3j)

JSB Beast Diabolo 16.20 grain -- 554 11.1 (15.0j)



Diana 460:



Winchester Maximum Velocity 4.32 grain -- 1431 19.3 (26.2j)

H&N FTT Green 5.56 grain -- 1240 18.99 (25.7j)

RWS Diabolo Basic 7.00 grain -- 1099 18.78 (25.5j)

JSB Exact 7.33 grain -- 1101 19.74 (26.8j)

H&N FTT 8.64 grain -- 986 18.3 (24.8j)

H&N barracuda 10.65 grain -- 869 17.9 (24.3j)

JSB Beast Diabolo 16.20 grain -- 610 13.3 (18.0j)



Diana 54:



Winchester Maximum Velocity 4.32 grain -- 1329 16.95 (23.0j)

H&N FTT Green 5.56 grain -- 1156 16.51 (22.4j)

RWS Diabolo Basic 7.00 grain -- 1024 16.30 (22.1j)

JSB Exact 7.33 grain -- 1034 17.46 (23.7j)

H&N FTT 8.64 grain -- 925 16.45 (22.3j)

H&N barracuda 10.65 grain -- 812 15.63 (21.2j)

JSB Beast Diabolo 16.20 grain -- 543 10.61 (14.3j)



Diana 350 Magnum Premium:



Winchester Maximum Velocity 4.32 grain -- 1499 21.57 (29.2j)

H&N FTT Green 5.56 grain -- 1322 21.58 (29.2j)

RWS Diabolo Basic 7.00 grain -- 1200 22.39 (30.3j)

JSB Exact 7.33 grain -- 1156 21.79 (29.5j)

H&N FTT 8.64 grain -- 1072 22.00 (29.8j)

H&N barracuda 10.65 grain -- 972 22.38 (30.3j)

JSB Beast Diabolo 16.20 grain -- 680 16.64 (22.5j)



Weihrauch HW97K:



Winchester Maximum Velocity 4.32 grain -- 1208 14.13 (19.1j)

H&N FTT Green 5.56 grain -- 1097 14.86 (20.1j)

RWS Diabolo Basic 7.00 grain -- 959 14.31 (19.4j)

JSB Exact 7.33 grain -- 918 13.73 (18.6j)

H&N FTT 8.64 grain -- 853 13.97 (18.9j)

H&N barracuda 10.65 grain -- 773 14.16 (19.2j)

JSB Beast Diabolo 16.20 grain -- 550 10.90 (14.8j)



Weihrauch HW85:



Winchester Maximum Velocity 4.32 grain -- 1224 14.37 (19.5j)

H&N FTT Green 5.56 grain -- 1113 15.32 (20.8j)

RWS Diabolo Basic 7.00 grain -- 980 14.94 (20.2j)

JSB Exact 7.33 grain -- 950 14.70 (19.9j)

H&N FTT 8.64 grain -- 882 14.93 (20.2j)

H&N barracuda 10.65 grain -- 812 15.63 (21.2j)

JSB Beast Diabolo 16.20 grain -- 570 11.71 (15.9j)





There you have it folks. I tried to be as consistent as I could. Same distance about 10 inches from the muzzle.

I used a brand new Air- Chrony Mk3 that I just bought from Airguns of Arizona.

It was 82F/ 28C with 71% humidity sea level in Houston.





Other mention, Weihrauch HW45 air pistol 280 fps with 16.2grain and 715 fps with 4.32grain.



Conclusion , yes they perform as advertised.



Alfred.






 
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Reactions: BigT
I didn’t test it I imagine it would be like a knuckle ball at distance. The FFT green is surprisingly good out to about 15 yards. At least it’s great fun to hear even a modestly powered airgun making a supersonic crack. The light alloy pellets are much harder than the lead and might put extra wear on the barrel if you use a ton of them. Noticed that they make much cleaner holes through the pellet box.
 
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Turkish built Webley Tomahawk .177 springer. Except for cosmetic stuff (stock, moderator and badging) it's the same rifle as the Hatsan Model 95. Hatsan says 1000 fps.

H&N Sniper Medium 8.5gr: Average 952 fps, ES of 7, SD of 2, 17.1 fpe

RWS R10 Match Heavy 8.2gr: Average 975 fps, ES of 29, SD of 9, 17.3 fpe

For the gentleman who said they should be advertised as miss every time? They're 5 years old but the targets shot with those 2 pellets from a rifle brand new out of the box, untuned and maybe 100 shots on it when I shot them. 25 yards, 20 shots with each.....

tommy177snipers.1629288883.jpg
 
tommy177rws-r10.1629288989.jpg

 
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I was also wondering why the 16.2 grain pellet had such bad power rating compared to the others. The only reason I could think of, is that the pellet is longer and fits snugger. It is also almost slug shaped and creates a lot more friction resistance going through the barrel and looses energy. Not sure that is the explanation. If anyone else knows please chime in. 
 
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