Tuesday, September 8, 2020

INTRO: .17 HMaiR mkII

.17 HMaiR fitted with 27-5/8" .172 cal TJ Enterprises barrel, Boyds Stock, OEM Benjamin 22 cal Valve and various Hill Airgun parts

So, the build discussed here forward is version/mark 2.  The second version to the ever popular and successful .17 HMaiR (pictured above).  This time, it is built off of a much more powerful platform, the Airforce Condor.  The Airforce line of air rifles are known for being some of the MOST powerful if not, THE MOST POWERFUL airguns because of the direct valve these air rifles are powered with.  Unlike other airguns which have multiple 90 degree turns the air must take before it even hits the projectile, the Airforce valves are not only INLINE with the base of the projectile but are within about 1" of the base of the projectile.  This format, equals POWER!  Or the ability to make power!
She started life as an Airforce Condor frame and a 0DB LDC

Add a Green Mountain Barrel, Carbon Fiber 4500 psi bottle, Eagle Vision Rings and a Athlon Scope

Add a little Carbon Fiber to the barrel to wick away the shine and VOILA

Doug Noble did all the machine work to make this girl a screamer.  Not only did he machine the barrel but he also made me a custom 1 of a kind hammer, valve, valve stem and valve body.  As well as a custom breech to match the goods.  The plan this time was to push the .172 round fast and hard.  I mean, the rifle is named after the infamous .17 HMR rim-fire round and while compressed air cant equal what gun powder can do, we still can push pretty fast.  My original .17 HMaiR posted at the top of the page, shot a 24.5 gr HP at 950+ fps which was fantastic but, that gun was limited due to mainly the limited capacity of the guns 212 cc airtube and its fill pressure of 3000 psi.  It can push a 24.5 gr slug as fast as 1025-1030 FPS max but only for 1 shot then it dropped consistently after that.  The new mkII version wears a 500cc Carbon Fiber bottle that can fill up to 4500 psi which may not sound like a big increase but, in HPA terms, THAT'S HUGE GAINS!!  Double the air capacity and an additional 1500 psi!  I can now push those same 24.5 gr HPs at virtually any speed up to OVER 1250 FPS!  There is still more testing to be done though on all out power, power setting (for accuracy) and shot string numbers.

PERFORMANCE and STATS:
500cc Carbon Fiber 4500 psi Bottle
25" Green Mountain .172 cal Barrel
Airforce Condor Frame
0db LDC
Athlon Argos 8-32x56mm FFP Mil Scope
Eagle Vision Scope Rings, 30mm
Dovetail to Picatinny rail
Custom Hammer
Custom Valve
Custom Breech
Capable of 102 FPE (33 grs at 1179 fps)

Stay Tuned!

More information coming very soon on this Blue Gem!





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