Well... I finally had the opportunity to visit the range and chronied some numbers from my new S410 Xtra .22cal 8)
I'm very happy with the result I was getting and plan to do some more chrony with a higher start fill, max 2900psi at another date and time. Looking at the first 60 shot graph that started at 2800psi, I think had I gone 2900psi I'd be getting that bell curve we strive for in our PCP which means that I'd can get about 40 good full power shots instead of the 30 shots at 2800psi.
Shots 01-10: Low: 835, Hi: 864, Avg: 850, ES: na, SD: na, ft/l
34
Shots 11-20: Low: 849, Hi: 868, Avg: 859, ES: 19.79, SD: 6.63, ft/l
35
Shots 21-30: Low: 821, Hi: 848, Avg: 836, ES: 27.32, SD: 9.79, ft/l
33
Shots 31-40: Low: 786, Hi: 829, Avg: 807, ES: 43.15, SD: 13.26, ft/l
31
Shots 41-50: Low: 738, Hi: 781, Avg: 759, ES: 43.38, SD: 14.89, ft/l
27
Shots 51-60: Low: 693, Hi: 738, Avg: 716, ES: 44.92, SD: 15.58, ft/l
24
Shots 01-10: Low: 853, Hi: 874, Avg: 865, ES: 20.77, SD: 5.65, ft/l
35
Shots 11-20: Low: 841, Hi: 865, Avg: 856, ES: 23.43, SD: 7.81, ft/l
34
Shots 21-30: Low: 811, Hi: 850, Avg: 832, ES: 39.39, SD: 13.07, ft/l
32
Shots 01-10: Low: 957, Hi: 965, Avg: 960, ES: 8.24, SD: 2.82, ft/l
33
Shots 11-20: Low: 928, Hi: 958, Avg: 944, ES: 30.92, SD: 9.43, ft/l
31
Shots 21-30: Low: 888, Hi: 929, Avg: 908, ES: 41.09, SD: 13.92, ft/l
29
Shots 01-10: Low: 974, Hi: 993, Avg: 986, ES: 18.70, SD: 5.56, ft/l
31
Shots 11-20: Low: 944, Hi: 971, Avg: 956, ES: 26.81, SD: 9.43, ft/l
29
Shots 21-30: Low: 901, Hi: 938, Avg: 915, ES: 36.97, SD: 11.70, ft/l
27
I also used the Hawke ChairGun Pro to graph my POI for each pellet I used. What I did was took the three 10 shot strings and averaged the MV for the final velocity I entered into the CG Pro. As you can see both the JSB and Crosman Premier are identical yet the JSB had a 2 ft/lb advantage over the Crosman Premier.
While the Kodiak pellet had a high ft/lb and does buck the wind but the trajectory is not as flat as the other two pellets I’ll be using.
Last note, the S410 Xtra is so darn accurate right out of the box I’m speechless…
“ A top quality PCP rifle - $1000. Knowing that it’ll shoot exactly where you point it - Priceless!”
I'm very happy with the result I was getting and plan to do some more chrony with a higher start fill, max 2900psi at another date and time. Looking at the first 60 shot graph that started at 2800psi, I think had I gone 2900psi I'd be getting that bell curve we strive for in our PCP which means that I'd can get about 40 good full power shots instead of the 30 shots at 2800psi.
Shots 01-10: Low: 835, Hi: 864, Avg: 850, ES: na, SD: na, ft/l
34Shots 11-20: Low: 849, Hi: 868, Avg: 859, ES: 19.79, SD: 6.63, ft/l
35Shots 21-30: Low: 821, Hi: 848, Avg: 836, ES: 27.32, SD: 9.79, ft/l
33Shots 31-40: Low: 786, Hi: 829, Avg: 807, ES: 43.15, SD: 13.26, ft/l
31Shots 41-50: Low: 738, Hi: 781, Avg: 759, ES: 43.38, SD: 14.89, ft/l
27Shots 51-60: Low: 693, Hi: 738, Avg: 716, ES: 44.92, SD: 15.58, ft/l
24
Shots 01-10: Low: 853, Hi: 874, Avg: 865, ES: 20.77, SD: 5.65, ft/l
35Shots 11-20: Low: 841, Hi: 865, Avg: 856, ES: 23.43, SD: 7.81, ft/l
34Shots 21-30: Low: 811, Hi: 850, Avg: 832, ES: 39.39, SD: 13.07, ft/l
32
Shots 01-10: Low: 957, Hi: 965, Avg: 960, ES: 8.24, SD: 2.82, ft/l
33Shots 11-20: Low: 928, Hi: 958, Avg: 944, ES: 30.92, SD: 9.43, ft/l
31Shots 21-30: Low: 888, Hi: 929, Avg: 908, ES: 41.09, SD: 13.92, ft/l
29
Shots 01-10: Low: 974, Hi: 993, Avg: 986, ES: 18.70, SD: 5.56, ft/l
31Shots 11-20: Low: 944, Hi: 971, Avg: 956, ES: 26.81, SD: 9.43, ft/l
29Shots 21-30: Low: 901, Hi: 938, Avg: 915, ES: 36.97, SD: 11.70, ft/l
27I also used the Hawke ChairGun Pro to graph my POI for each pellet I used. What I did was took the three 10 shot strings and averaged the MV for the final velocity I entered into the CG Pro. As you can see both the JSB and Crosman Premier are identical yet the JSB had a 2 ft/lb advantage over the Crosman Premier.
While the Kodiak pellet had a high ft/lb and does buck the wind but the trajectory is not as flat as the other two pellets I’ll be using.
Last note, the S410 Xtra is so darn accurate right out of the box I’m speechless…
“ A top quality PCP rifle - $1000. Knowing that it’ll shoot exactly where you point it - Priceless!”




















































