I have stock Texan tx2 valve .510 cal and am shooting 650 grain spire point bt at 750 fps. I can't keep any adapter for dovetail to pictany adapter s to work with the heavy recoil. No matter how tight they are. I had the utg adapter and it had 3 vertical screws to put forces both ways and eventually failed. I think I'm going to have to drill and tap the receiver and base together. I don't see any other way. In the pictures I put white out around receiver and base so I had a visual to make to check for movement. Help ideas comments appreciated. I tried 3 styles of adapter s and all have eventually failed.
Tuning Airforce Texan Severe mounting problems dovetail to weaver pictany adapter s????
- Thread starter RM.510bigbore
- Start date
I have stock Texan tx2 valve .510 cal and am shooting 650 grain spire point bt at 750 fps. I can't keep any adapter for dovetail to pictany adapter s to work with the heavy recoil. No matter how tight they are. I had the utg adapter and it had 3 vertical screws to put forces both ways and eventually failed. I think I'm going to have to drill and tap the receiver and base together. I don't see any other way. In the pictures I put white out around receiver and base so I had a visual to make to check for movement. Help ideas comments appreciated. I tried 3 styles of adapter s and all have eventually failed.
ive driiled receivers before, not to tap them but to run a setscrew in far enough to hold it .. ive pretty much never felt goid about marring up a gun like that though ... id exhaust other ideas first befire doung it again ... maybe ask airforce support what they think and recommend .. also utg stuff although a great value fir budget guns is some of the weakest pot metal aluminum on the planet .. think steel ...
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Try these. Been using them on different guns I've had for a few years. Never had any problems with them. They go INSIDE the bottom of picatinny rings & hold TIGHT!
WestHunter Dovetail to Picatinny Rail Adjustable Adapter, 11mm to 20mm Rail, 2Pcs https://www.amazon.com/dp/B08CBSSBRS/ref=cm_sw_r_cp_apan_glt_fabc_AV2J4XPHQ0KCFSXNCWT6
WestHunter Dovetail to Picatinny Rail Adjustable Adapter, 11mm to 20mm Rail, 2Pcs https://www.amazon.com/dp/B08CBSSBRS/ref=cm_sw_r_cp_apan_glt_fabc_AV2J4XPHQ0KCFSXNCWT6
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I had the same problem on mine.
I put a utg dropper mount on, and it hasn't budged since:
https://www.pyramydair.com/product/utg-drooper-scope-rail-11mm-to-weaver-adapter-compensates-for-droop?a=4191
I put a utg dropper mount on, and it hasn't budged since:
https://www.pyramydair.com/product/utg-drooper-scope-rail-11mm-to-weaver-adapter-compensates-for-droop?a=4191
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From an old set of dovetail rings, cut off the rings and loctite down just the bases to back up your original mounts. If you have the room for that. Can't tell what sort of optic you have. Sightmark?
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Yes sight mark wraith and a cold shot adjustable base the scope and rangefinder are super heavy compared to regular scope. That is a great idea about cutting a dovetail ring and using it as a stop. I have some extra dovetail scope rings im going to try that today.
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I just bought that utg adapter from pyramid air too wimpanzee it looks well built. So I'm going to try the new ugg adapter and cut off a old scope ring and lock tite it in front of the base. Gerry I tried those style adapters and they move real easy under recoil. I'm trying this and then if it doesn't work last ditch efforts it will go on a mill and get tapped to secure receiver and base together. This is a great community and so appreciate the advise I receive from my peers
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I used the Hawke Sport Optics 2-Pc Adapter, 3/8" to Weaver Rail.
https://www.pyramydair.com/product/hawke-sport-optics-2-pc-adapter-3-8-to-weaver-rail?a=4162
https://www.pyramydair.com/product/hawke-sport-optics-2-pc-adapter-3-8-to-weaver-rail?a=4162
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A BKL will never move.
https://www.bkltech.com/Dovetail-to-Weaver-Picatinny-Adaptor-Mounts-s/7.htm
John
https://www.bkltech.com/Dovetail-to-Weaver-Picatinny-Adaptor-Mounts-s/7.htm
John
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Think the problems fixed for now 60 rounds down range and no movement yet. Thank to my friends on airgun nation. Here's my current setup
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Well another 100 rounds down range and the utg adapter is slowly sliding forward. It is super well built and has two set screws. I really don't think any of the adapters are going to hold up to the recoil from my 650 grain slugs. I'm going to buy the eagle vision adapter 11mm to 20mm. It has two set screws and is much lower profile. I have the same Chinese copy of that eagle vision adapter but it does not have set screws and is not as well made. So I'm going to get the eagle vision adapter and drill and tap it to my Airforce permanently. I really don't want to buy the bkl because all the adapter s slide forward from the recoil. Height is a concern to since I'm running the cold shot mil base already. So eagle vision adapter actually threaded in place is what I'm doing next. What's the worst thing that can happen is if the recoil snaps the threads in the Airforce frame. I gotta figure it out slipping bases are not very accurate lol. The bkl and eagle vision are the only adapters I haven't tried yet.
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Going to mount the range finder on my Airforce frame and get some weight off of the whole mount. I'm sure the extra weight and recoil from the 650 gr are not helping.
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I contacted Airforce and let them know what I was experiencing with the adapter s moving. They were very nice and helpful and I'm trying two of the Airforce pictany adapter s. I am trying to exhaust all options before drilling and tapping the frame. Sorry to beat in your ears but if this info is out here it will help someone else running into the same problem. I will say Airforce customer support is great something you don't see very much today
. Thank you airgun nation friends. Will keep you updated!
. Thank you airgun nation friends. Will keep you updated! 
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I just wanted to post a picture of the top of my frame you can see it just drags the adapter s toward with recoil. The 2nd picture is all the adapter s I have tried and failed with so far. This has been my number one problem. Onei I hope to solve
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That one second from right, are there three turn down recoil pins available? Understand your being loathe to begin drilling holes in the rail, but wouldn't all you need be just a dimple for the recoil pin to settle into?
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Yes almost all of them have recoil pins. I'm going to try the Airforce pictany adapter. Before drilling anything. I just want everything secure I have been chasing my tail and have way more time mounting and sighting in repeatedly than I should.
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You'll be just fine. Airforce does (for some years now) own BKL. Havent tried any labeled "airforce" but lot's of BKL branded. Pretty sure if you want say 2 piece's you'd want "BKL" but no matter.
Once correctly tightened you can remove the screws and beat them about the head and heck with a mallet and the darns things wont move a bit! I picked up a free set on a gamo 1000 just for that reason, note the spreader screw holes used to ever move the thing.
John
edit: Just recalled and checked my escape ul which does have an "airforce" bi-pod mount, same extrusion manufacture -and things may be different these day's?- but the finish in the BLK's somehow seems a bit prettier, the af mount does match the af rifles finish though.
Once correctly tightened you can remove the screws and beat them about the head and heck with a mallet and the darns things wont move a bit! I picked up a free set on a gamo 1000 just for that reason, note the spreader screw holes used to ever move the thing.
John
edit: Just recalled and checked my escape ul which does have an "airforce" bi-pod mount, same extrusion manufacture -and things may be different these day's?- but the finish in the BLK's somehow seems a bit prettier, the af mount does match the af rifles finish though.
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Airforce. Air guns U1075 dovetail to picatinny mount adapter. I just cast up #250. 510 650 grains spire pt boat tails up. if the Airforce mounts don't move on my 50 cal Texan that will be great. The quality is good and they seem very tight. Will keep you posted while I sling a bunch of lead. Thank u all for your patience
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Do you have a suppressor on this? If not what thread is on the end? I have a test muzzle brake that I carved out for a Hammer sitting here going to waste. Just wondering if that might help with some of the issue.
Also what is the maximum length of bullet? I'm guessing over an inch long because a 650 spire point is going to be fairly long.
Also what is the maximum length of bullet? I'm guessing over an inch long because a 650 spire point is going to be fairly long.
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