I very highly doubt that his pellet probe is causing any issues at all. His video shows that the pellet probe moves a little upward when pushed in and downward when pulled out. What it doesn't show is the scale of that movement. If the gun is a .177, then that movement is well under 10 thousandths of an inch. Depending on the manufacturing of some parts of the gun, that could be an acceptable tolerance. Unless he's feeling a lot of resistance pushing in the pellet (like you sometimes can with the .35 they have), he's probably not damaging the pellet at all. Not only that, but we don't know the conditions he shoots under. If they shoot a gun in their facility with no wind, no elevation change, etc, they will get a different grouping than somebody outside on a windy day for sure. But 3/4" at 30 yards really isn't bad. Also, the picture he posted shows that most of his groups are 1/2" or less. His #1, #6, and #8 targets are actually pretty darn nice, especially considering those are .177 holes. It seems to me like the shooter is throwing off the shots on some of the other targets when the gun can obviously do well with 5-6 (I'm assuming) consecutive rounds.P.S. it's not that nobody else has that issue, it's that the probe movement isn't an issue in the first place, its just a fact of their guns sometimes. My BT65 .30 has a very slight probe movement that you can really only see when looking for it. It's there, but its not a problem. The pellets still seat fine, and the gun still is as accurate as I need it to be.
Well for what it's worth my gun was refurbished ,I tried all kinds of stuff to get my at44 to group . recrown, polished ends of barrel , different fill pressures ,many different pellets , the only thing that came close to a good group was baracuda hunters but even those wasn't very good out to 50yd. Finaly I decided to buy another barrel as a last resort. After installing it I knew it was much better before even shooting it.the difference in working the side lever was so very noticable.smoother cycling . the funny thing about it all is I was concerned the new barrel was to loose when installing it , the new one is very easy to slip in . old one was tight. And when incerted as far as it could go the countersunck holes in barrel did not match up with grub screws ? New one does perfectly. But I can't say with absolute certainty it was the barrel because after ordering the new barrel my air cylinder rolled off bench and broke the air valve so it was also replaced at the same time as the barrel.Shot good after replacing those ,,, and shoots really great after doing valve mods and adding regulator.My only complaint with the gun now is it's so heavy... Also, while it still shoots the baracuda hunters good it really loves AA field heavys . my gun is a 22 thow.
Hello.I have made a mod on my AT44-10 so i can swap .25 and .177 barrel so i know this: where the probe comes out of the breech and into the magazine there is a screw underneath the breech, small grub screw. The screw holds in a probe guide, as the bigger (10.9mm) hole is drilled right through the breech, so probe needs to be guided in front, and also the spring that is pushing probe back is retained by that guide. its just a small piece with groove for bolt and hole through. I noticed my bolt was wiggling too, and when i measured, the probe is around 6.4mm and the hole is 7mm so there is a bit too much room. try and take it out and have a machinist make you another one with smaller hole (delrin?). Maybe it will (or not) fix the sealing problem but it is a good thing to try
No problem. of course i have to swap pellet probe or it wouldnt seal. Sorry, i do not have pictures now, i basicaly made two piece pellet probe, thinner part screws in the bigger part.Here is the picture of the screw, remember i have 10 shot version so check if it is the same on yours.I am talking about screw on the far left of the picture, small grub screw
If you dont have a lathe or know some machinist Ithe only way is to buy a new pellet probe for right calliber. If you have acces to lathe or know someone: When you take out pellet probe, its diameter is first 10.8mm, then around 8mm diam. aprox 9mm long where the spring sits, and then it is little less than your caliber. I cut the slimmest part of the probe of right where caliber diameter started, drilled and tapped 3mm hole in the thickest half of probe, and then made new part of correct caliber, and also tapped so it can be screwed on. When you get the probe out you will know what I mean.Im glad i can help, but I would like to get credit for it, since i didnt see anyone make it before Also i made this about a month ago, so the measurements may not be 100% correct, but when you take it out youll see from there
Yes, all three. I thought ill have to adjust indexing mechanism, but i spoke with a friend and we made conclusion that Hatsan is just enough sloppy made it wont have an effect on indexing, it still works. Also i didnt make a big taper like on the original probe, just slight and it works with .177 10 rounds, as .25 only has 9.