TESTING NEW CO2 ADAPTER
My new CO2 adapter came today. Decided I wanted a medium power option with lots of shots for extended shooting sessions in the back yard (15-30 yds). Too late for targets so set up the chrony in the shop. No tophat adjustments, just as I received the adapter. I know 6 shot strings are not as good as 10 but wanted to get an idea how the setup was goin to perform.
My gun: TalonSS w/ 24″ bbl and bullseyebills frame extender, w/ baffles.
temp 65deg (per weather channel, No thremometer of my own)
pellet: 14.3gr cp hollow points (metal tin), keeping with the idea of cheap/extended shooting sessions
pw2
625,665,645,594,623,633
pw4
674,680,678,675,675,669
pw6
672,692,695,685,688,695
pw8
699,711,693,714,707,682
pw10
726,721,716,712,700,697
(starting to get excessive “smoke” unexpanded gas)
pw12
almost no velocity increase but much more “smoke” didn’t bother to document velocity as each shot was decreasing by 30fps or so (excessive cooling effect i beleive)
Did get to shoot a little outside before dark (warmer) a couple shots over the chrony yielded 720-750fps on pw8 did not document so don’t remember exactly.
No targets for accuracy yet, will follow up with some 25yd groups this weekend but seems good; I have a set of spinner targets set at 35yds ranging from 1″-2.5″ and could hit the smaller ones easily and pick my point of impact on the larger ones.
Looks like a legitimate 720fps plinker w/ 14.3gr crossmans (16.46ftlb) and gobs of shots without pumping 😀 . Birds and small game under 35yds beware 😈
I am equipped to fill my own co2 (have 2 20lb bulk tanks that cost 12 bucks each to fill) so much cheap and effortless shooting to come.!
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I never tried CO2 with my adapter because I use an HPA paint ball tank with a regulated output of 1350 psi. It gives me the best consistency at 860 fps using 14.3gr .22cal pellets. The power wheel doesnt change the velocity.
It costs me $12 to refill my 88 Cubic Foot carbon fiber tank fill station to 4500 psi. I
mike,
Oops overlooked pellet size in my description, it is .22 (don’t know of a 14.3 gr .177 available from crossman :lol:.
It does seem wierd to shoot though as compared to Kodiacs at 900+. I have to remind myself that 14.5ftlb is still more than the Brits are legally allowed without special permit and they hunt with their guns.
I have 1 9 oz and 2 12oz. If scope was too low to begin with the 9oz helps a lot, my 12oz is almost the same size as the hp tank.
Will post some target results after the weekend if the weather gets better (rain/hail/tornados here today). Hoping for a consistent 750fps on an average 80 deg. day with medium weight pellets and good (.75″ or less) groups out to 35yds or so.
Good info I have a Co2 adapter but no chony so this is usefull. I have a 12oz and a 9oz tank. Also what size pellet are you shooting .177 or .22?
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Have to assume that’s a 24″ barrel….seems a bit too fast for an 18″ an d way-way too fast for a 12″ (oops…now I see it…is a 24″). Good numbers, that’s more than enough power for 40-50yard shooting.
Get the same power-plateau but it happens earlier with a 12″ barrel. Past #7 just squirts gas, doesn’t add to speed (this one is a 5mm). As the temp. increases, found that there is a vel. increase up to about setting #9…not a whole bunch, but measureable. Suspect you might find the same thing, will have to test later in the summer to find out.\
Will also find there is a “sweet spot” setting where the vel. variations are low. Not 100%, but best accuracy lives somewhere near that spot (looking at your short list, am thinking it’s somewhere in the $4 to #8 range).
One other bit. Might find that it cools down quicker than “open barrel” co2’s. Like an SS, the gas gets trapped inside the frame, and gets to give it’s full cooling effect to the metal rather than just venting off into the air straight from the muzzle. Just need to pace your shooting to stay ahead of the cooling-curve.