Airforce My Texan .357 Carbine and SS experiences and chrono results

So a little bit of time has passed and both Texans have been broken......waiting on parts.
Racheal at Airforce(Super friendly and easy to work with) sent me parts and spares. Very pleased with customer service, the holidays destroyed fast shipping times.

Bring you up to speed:
New Texan Carbine .357 after a few shots developed an air valve leak, Removed valve and found a split in the delrin poppet...like a moron I refilled it...leaking to see if it would reseal. Had the tank off of the gun on my brothers kitchen counter. Pressure reached 2000 psi it was barely hissing air, bleed down my hose and BOOM! the valve poppet broke in half launching the tank across the house destroying everything it contacted shot the top hat/valve stem into the counter and into my forearm.

I believe it was 2 days later and still afraid of the Texans The new SS .357 was much a less power level than the Carbine. Testing hammer settings and ammo over a chrono the valve poppet started leaking.
Contacted Airforce and they were more than kind, sending out a complete new air tank for the Carbine and a complete new upper valve assembly for the SS.
At this point the Carbine shot 150 grain in the mid 800 feet per second on an 85 degree day at 3000 psi and the SS was shooting the same ammo same maxed out power wheel and pressures at 746 fps........that's a huge difference.

Now you are caught up.
Today I changed the Carbine Tank and the SS valve and chronographed both. Same pressure,same 45 degree temp and the same ammo size and weights. Here are the results. 5 shot groups and refills between ammo changes

Texan Carbine .357 Texan SS .357
JSB 81 grain Full Power wheel JSB 81 grain Full Power Wheel
3000 PSI 3000 PSI
1020 fps 187 ft lbs 987 fps 175 ft lbs
984 fps 971
967 958
958 941
938 158 ft lbs 2200 psi 2200 psi 921 152 ft lbs

130 grain ,357 pure lead 3000 psi
849 208 ft lbs 849 208 ft lbs
823 823
813 813
797 803
793 2100 psi 181 ft lbs 790 2100 psi 180 ft lbs

150 grain .358 pure lead 3000 psi
816 221 ft lbs 803 214 ft lbs
800 792
790 780
774 767
767 195 ft lbs 2100 psi 748 146 ft lbs 2100 psi

So the new valve on the SS seems to make a difference so far. I have pulled both guns apart and measured every part they are all the same,I did not weigh the hammers.

My final thoughts are both guns are very accurate at the 30-50 yards I tested them. Both guns are lower power levels than I expected from a $1000 plus air rifle.
The SS at 3 times out of 10 shots I have to cycle the cocking lever again to allow the safety to release, I will contact Rachael on this issue.
The SS had a stripped screw that holds the trigger plate assembly, was holding one thread and was loose on arrival, Installed a longer screw.

I just expected 150 grains to be in the 900's.....I'll research what can be done.
The carbine will ring your ears and the SS is Quiet.
Both guns in fact do have the same 24.75" barrels

The SS loading area is for sure larger than the Carbine. I can only push almost half of any slug into the carbine before my finger hurts where as the SS I can push 90% of that same .358 slug into the bore
Accuracy wise the both favor a 148 grain wad cutter from a Lee .358 mold, assuming its due to the longer contact area.Clover leaf groups at 35 yards.

I do like that the higher up in weight I go the lower the fps spreads are and consistant.
Once both guns reach 2200 psi they both hover at that pressure for about 4-5 shots. Both are 10-12 useable shot guns per fill.

What are your thoughts on the results as there is not alot of info avalible on the ,357 short barrels?
 
http://trajectron.com has upgraded power 3625psi Texan valves with spring and heavy hammer on sale now under $200.00... That might take care of your fps....I have one of there high output valves in a condor with 26inch .222 and will sling 55 grain slugs up to 1040 fps...There valves are powerful...I had the saftey problems with my Texan .510 until i did away with there auto saftey system.. I'm so glad you did some through testing with chronograph..How do your barrels clean up? Any leading? One barrel better than the other? Good work Good shooting
 
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With a carbine you do give up power due to the shorter barrel but i had no idea it was that much. I have the 308 long barrel and also have a
Trajectron kit. With power wheel at less than 1/2 way and at 3000 psi is where i found to get the best accuracy. It is capable of handling 3625 psi.

308-texan-150gr-BarsG-FN-FB.jpg
 
I was aware of the power loss but there is almost no data online on the .357......its kinda of an oddity in a Texan. Personally the amount of pistol molds avalible I love it.
With .357 I have .380,9mm,.357 and .38 molds to choose from.

I'm not willing to spend $600-$800 to gain more power on this platform by purchasing a 3650 tank,valve and spring.

At this power level I don't feel its worth the price.
Airforce emailed me their specs on what it shoots with what weights. Why can't that be advertised from the start?

Once I work around the hold sensitive issue I'll look into ways to cheaply get another 20-30 ft lbs out of it.
I use o-rings to shim the hammer spring and after a 1/4" more you get coil bind and no increase of fps so this leaves me to believe I'm at the limit of the valve.


Food for thought:
Behind the tophat there is a soft durometer oring to cushion the blow and regulate(and old condor trick) and the material diameter is about 1/8" thick.
What if I put a 1/16" thick one in its place.
Would this allow the valve to stay open a lil longer?

May waste air instead of increasing fps.......I'm not an engineer.
 
I was aware of the power loss but there is almost no data online on the .357......its kinda of an oddity in a Texan. Personally the amount of pistol molds avalible I love it.
With .357 I have .380,9mm,.357 and .38 molds to choose from.

I'm not willing to spend $600-$800 to gain more power on this platform by purchasing a 3650 tank,valve and spring.

At this power level I don't feel its worth the price.
Airforce emailed me their specs on what it shoots with what weights. Why can't that be advertised from the start?

Once I work around the hold sensitive issue I'll look into ways to cheaply get another 20-30 ft lbs out of it.
I use o-rings to shim the hammer spring and after a 1/4" more you get coil bind and no increase of fps so this leaves me to believe I'm at the limit of the valve.


Food for thought:
Behind the tophat there is a soft durometer oring to cushion the blow and regulate(and old condor trick) and the material diameter is about 1/8" thick.
What if I put a 1/16" thick one in its place.
Would this allow the valve to stay open a lil longer?

May waste air instead of increasing fps.......I'm not an engineer.
 
I was aware of the power loss but there is almost no data online on the .357......its kinda of an oddity in a Texan. Personally the amount of pistol molds avalible I love it.
With .357 I have .380,9mm,.357 and .38 molds to choose from.

I'm not willing to spend $600-$800 to gain more power on this platform by purchasing a 3650 tank,valve and spring.

At this power level I don't feel its worth the price.
Airforce emailed me their specs on what it shoots with what weights. Why can't that be advertised from the start?

Once I work around the hold sensitive issue I'll look into ways to cheaply get another 20-30 ft lbs out of it.
I use o-rings to shim the hammer spring and after a 1/4" more you get coil bind and no increase of fps so this leaves me to believe I'm at the limit of the valve.


Food for thought:
Behind the tophat there is a soft durometer oring to cushion the blow and regulate(and old condor trick) and the material diameter is about 1/8" thick.
What if I put a 1/16" thick one in its place.
Would this allow the valve to stay open a lil longer?

May waste air instead of increasing fps.......I'm not an engineer.
Do you have a heavy spring? I have a factory hammer and a heavy spring and i noticed a difference. i too changed out that Oring behind top hat with a thinner one.
 
Just curious, have you slugged the barrel and what is the dia. along with your ammo dia. . Naturally could make a heck of a lot difference in fps/fpe. Straight sided slug? Back when, some of the UPG (I believe) slug that ride along narrow rings on the slug only worked better in many airguns.
Also thought esp on airforce but all rig the pellet/slug needs to be seated fully flush to preform correctly. Perhaps touch it up with a cratex so they fully seat if you are sure your slugs are indeed the correct size. Not much cost there and might help?
And yes sir many pesky factory specs are a bit of a let down (with Many manufacturers) for some. Only AF rig I have ever had ( didnt care for the original remove bottle to fill flexing Gunpower model I tried yaers ago) is the current AF Escape UL in .25 which produces the exact factory claimed 61fpe w/35.9g JSB but the sweet spot for that is ONLY 2,100psi.
The only .357 RAW -original- made only a bit more power than you are getting but was a 100 yard MOA rifle which will hunt.

Good luck,

John
 
Just curious, have you slugged the barrel and what is the dia. along with your ammo dia. . Naturally could make a heck of a lot difference in fps/fpe. Straight sided slug? Back when, some of the UPG (I believe) slug that ride along narrow rings on the slug only worked better in many airguns.
Also thought esp on airforce but all rig the pellet/slug needs to be seated fully flush to preform correctly. Perhaps touch it up with a cratex so they fully seat if you are sure your slugs are indeed the correct size. Not much cost there and might help?
And yes sir many pesky factory specs are a bit of a let down (with Many manufacturers) for some. Only AF rig I have ever had ( didnt care for the original remove bottle to fill flexing Gunpower model I tried yaers ago) is the current AF Escape UL in .25 which produces the exact factory claimed 61fpe w/35.9g JSB but the sweet spot for that is ONLY 2,100psi.
The only .357 RAW -original- made only a bit more power than you are getting but was a 100 yard MOA rifle which will hunt.

Good luck,

John
Havent slugged the barrels yet but I sized .356,.357 and .358 with no fps diffrences.

I have a .457 CF Long that I love and it puts out what they advertise and it's a flawless machine.
Friend has had a condor .25 stock forever and besides a leaking oring every few years it's a reliable machine.
I just bought an stright side .358 mold......if it can master it.
20250115_185928.jpg


20250115_185921.jpg
 
Shot the gun today experimenting with diffrent holds
Found it likes to be held firm.

Talked to Airforce via email and explained having to cycle the cocking lever to release the saftey.
The informed me that the issue is caused by a soace/washer on the wrong spring and to move it to the sear spring.
Done that and the gun was stuck cocked and saftey stuck on.
The gun felt like the lever was scraping metal.

found some loose screws on internal moving parts.
Im sending the entire gun back to airforce.
There is almost zero lube on the moving parts.
There is alot of visible wear from the sear.

Not happy with this lemon nightmare Texan.

My Texan .457 has been a smooth machine

20250116_120611.jpg


20250116_114618.jpg


20250116_114612.jpg
 
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Shot the gun today experimenting with diffrent holds
Found it likes to be held firm.

Talked to Airforce via email and explained having to cycle the cocking lever to release the saftey.
The informed me that the issue is caused by a soace/washer on the wrong spring and to move it to the sear spring.
Done that and the gun was stuck cocked and saftey stuck on.
The gun felt like the lever was scraping metal.

found some loose screws on internal moving parts.
Im sending the entire gun back to airforce.
There is almost zero lube on the moving parts.
There is alot of visible wear from the sear.

Not happy with this lemon nightmare Texan.

My Texan .457 has been a smooth machine

View attachment 529555

View attachment 529556


Your 457 TX2 valve will have same auto saftey problems..I had multiple problems with mine until i fixed it..I have to change the carrier tube on my .510 Texan tonight..Last day of hunting season both screws stripped out... Airforce auto saftey has problems there are quite a few new Texan owners having the same problem...I like my custom condors with a super sear and no saftey at all..Nice light crisp trigger,,no creep..Much better than my Texan...
View attachment 529557
 
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