New 177 Pellet to hit the market…
I have just finished testing a revision to the Skenco UltraMag 177 pellet (pictures below). They will be stocked by PyramydAir in May 2012.
Improvements:
* Very consistent head and skirt diameter.
* Very tight 5 shot groups.
* Cleaner and more consistent casting.
* Lighter at 10.7gn vs the older 11.2gn
Terminal Ballistics
* 0.86″ – 22mm – Penetration depth
* 0.25″ – 6.4mm – Terminal diameter
Head – Skirt – Weight
* 4.52mm – 4.68mm – 10.78gn
* 4.50mm – 4.70mm – 10.78gn
* 4.50mm – 4.70mm – 10.54gn
* 4.52mm – 4.68mm – 10.78gn
* 4.50mm – 4.68mm – 10.78gn
* 4.50mm – 4.70mm – 10.60gn
And now some pictures….
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33 yards / 30m / 100 ft with TALON SS 177 12″ @ 2500psi PW4.0
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3 shot group 0.375″ c-t-c
5 shot group 0.75″ c-t-c
5 shot group 1.00″ c-t-c
All Replies
Viewing 6 replies - 1 through 6 (of 6 total)
The older 177 was too tight in a LW barrel due to manufacturing tolerances of the pellet. The new pellet is at the sweet spot for LW and matches the H&N specifications very closely.
i got a few tins in .25, they fit comfortably. howerver, my barrel is a tight bsa which i am approximating to be .243-.246…are these typically too loose in LW barrels?
thats the basic idea, the lead peels back and the penetrator keeps going, cool
The tip is centered at manufacture. I understand they changed the tip insertion process to prevent pellet deformation. The head and skirt size measurements I took were from three different rotations to make sure everything was consistent.
The accuracy tests show just how accurate these pellets are. Remember that I wasn’t shooting from a gun vice – instead I lined up and made each shot off a sand bag rest… so the variation in group size is partly due to human error.
100 feet is a long way… my heart/pulse was causing the cross hairs to move at 12x magnification 🙂
how do you center the metal tip, they look rough, if the tip is not cetered woudnt it spiral.
Viewing 6 replies - 1 through 6 (of 6 total)
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Estimated stock date at PyramydAir is May 2012.