AirForce Texan Part 2
Guest Blogger Thadeous from TnT Air
Sighting in, Velocity and Grouping
I only had 143-grain round ball with me during my trip, so this is what I used in my first 100-yard sight-in. It only took me five shots to get a 100-yard zero. I was shooting at an old concrete septic tank. I didn’t have a chrony with me, so didn’t know what velocity I was getting. But even at 100 yards, it is hitting with some major force. It was turning the lead ball into paper. I could only guess it was travelling over 1000 fps. This was later confirmed after I got home by a Beta Master Chrony. What really surprised me was how loud this thing is. Out in the open desert, it sounded like a .357 magnum going off. I was thinking to myself “I sure cant shoot this thing in my back yard.” In my little town, there are no regulations on shooting airguns, regardless of power or caliber, but having had neighbors call the cops when I shot my .25 Condor, thinking it was a .22 and having cops show up, just to tell me its ok to shoot as long as I am safe, THEN asking if they can take a few shots of the Condor and saying how cool it was, to tell me that I MAY upset the neighbors with the noise, but there’s nothing wrong with what I am doing, to go ahead and shoot.
Whew, there’s my run-on sentence for the day. I don’t think the AirForce Texan will fly as easily in the back yard, where I have a 300-yard range set up. Which is fine; I have a nice 200-yard range set up half a block away.
Shooting the AirForce Texan 100 yards with the round ball was a pleasure. I was shooting 5-shot groups that were around 1 inch, center-to-center. I couldn’t believe how accurate this was, especially with round ball. It made my Thompson muzzle loader look inaccurate as heck.
After getting home and setting up the chrony, the real business was about to start. After seeing the velocity it was shooting, I pulled up Chairgun and punched in the numbers. Seeing where I should be at 200 yards, I set up a cardboard box and drew a circle on it. After adjusting the scope for a zero at 200 yards, I fired 3 shots using round ball. Three shots under 3 inches center-to-center at 200 yards. I couldn’t believe it. The accuracy is amazing, I couldn’t wait to get some slugs and see what they could do.
After getting some 405- and 350-grain round-nose slugs in the mail from Hunters Supply, I started messing with the bullet tuner. The bullet tuner is the foundation of the AirForce Texan. It’s not like the power wheel we all are used to on the Condor and Talon guns. The tuner is different in that the slug is what determines
how long the valve stays open. I have found in testing that the 143-grain ball has the best shot curve with most velocity and shot count when the tuner is turned all the way in, then backed out three quarters of a turn. Starting with a full tank at 3000 psi, I was able to get a maximum velocity of 1044 feet per second. Which gives me 346.74 foot-pounds of energy. After 10 shots, the velocity fell to 839.8, and 223.99 fpe, with an ending tank pressure of 1500 psi. That is still plenty of energy left with shot number 10.
Shooting the 350-grain slug, I was able to get 5 good high-powered shots. Shot number one was 809.7 fps. Shot five dropped down to 713.1 fps. That’s 509.65 down to 395.29 fpe. I don’t think I found the perfect tuner position for the 350-grain slugs because it used more air than the 405-grain slugs after 5 shots. Ending pressure was 1850 psi. The 405-grain slugs shot from 765.4 down to 681.9 fps over a five shot string. That’s a whopping 526.19 foot-pounds of energy in shot one. Shot five was down to 418.26 fpe. The bullet tuner on the 405-grain slugs was backed out almost to the last marker on the frame.
To my surprise, the gun shoots round ball just as accurate as either of the slugs I tried. I next set up some boxes as targets at 150 yards to see what kind of groups I could get with the two weights of slugs.
In part 3 of the review, Thadeous will provide some shot string numbers and give us his final thoughts on the AirForce Texan.
Thadeous n Thora Moore
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