The endcap on the Talon SS
My Condor SS’ POI is dead on for about 50 to 60 shots. This is with a starting velocity of around 800-820 FPS. When the pressure drops, however, the POI changes- they go left or sometimes right. No, the velocity doesn’t rise indicating that the pellets are going too fast, as I’ve checked to make sure. I’ve also checked to see if the pellets are clipping. Does the endcap on the SS have anything to do with the change in the chamber pressure which affects the flight of the pellet before it leaves the muzzle? I’m thinking that there is a buildup of turbulence inside at lower bottle pressure; it’s as if to say that the air has less time to escape, which, as a result, affects the flight of the pellet. Has any of you TSS owners noticed this?
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Viewing 9 replies - 1 through 9 (of 9 total)
I’m still going to take a wild guess and think the pellets hit a velocity they are getting unstable…this might be because the air blast in the frame is overtaking the pellets at the lower speeds?
Wierd problem you got there 😆 refill after 50 shots 😉
Have you tried turning the tophat down to the fps they start going crazy and see if they still do it? maybe do a LONG shot string all they way to 600 fps or so while shooting a new dot every 5 shots and map out the accuracy curve vs. fps.
Clean the barrel really good like Synopsis said…surely won’t hurt, I clean my barrels all the time(every 200-300 shots prolly).
I’m curious to see how you fix this..if it’s fixable?
Jim.
I know that I read somewhere when I first got my SS that turning the power wheel over 9 or 10 will release too much air. The extra air supposedly creates turbulance which will cause erratic shot placement as well as waste air. I am not sure if I read this on this forum or if it was in the AF literature.
How old is the rifle, or how many shots have you run through it before cleaning? Maybe when the velocity drops a little the lead buildup starts to induce drag and begin to randomly pull shots to the left or right…
If it is the shroud it should be somewhat consistent since everything is pretty much the same on each shot and the internals are symmetrical…
Photo22 cleaned his barrel after just 500 shots and noticed a buildup of lead that effected his accuracy…
Have you tried it with the cap removed, only issue is it sounds like a rimfire .22… 😕
The problem occurs using CPs and Kodiaks.
Does it do this with different pellets? maybe the pellet is getting unstable at lower fps? just kinda guessing though as I havn’t noticed/paid attention to this yet…
Unless you have clipping I’m not sure how the endcap would throw off only some shots and not others.
Jim.
Oh, have you messed with the tophat clearances? That changes the number of shots per fill based on used air.
Larger gap, more air used per shot.
Smaller gap, less air per shot.
Use of chrony to set tophat is best practice…
Yes, I did adjust the tophat clearance. It’s the reason why I get that amount of shots. Actually I’d get more as the POI only drops about a pellet diameter at 20 yards.
50-60 shots is what I get from my TalonSS with the small valve and stock striker, if your running the Condor tank your doing fine, just refill after 50 shots…
Oh, have you messed with the tophat clearances? That changes the number of shots per fill based on used air.
Larger gap, more air used per shot.
Smaller gap, less air per shot.
Use of chrony to set tophat is best practice…
Not as well versed as many on this board, but I haven’t noticed that effect.
Will mention that it would be very easy to test for…just take the cap off, the rifle doesn’t depend on it for barrel-stabilzation, so only the air pressure trapped behind the cap should change (and it will be loud!).
I’ve not been able to get 50-60 “good” shots from a fill, at least not set to high vel. (maybe with the micro-meter tank or a standard tank set for traditional match-target speeds). May be better to stop at 25-30 and top it off.
Viewing 9 replies - 1 through 9 (of 9 total)
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Blackops,
I’ve cleaned the barrel again after doing so about 500 shots before. The thing with me is that as long as the pellets have pronounced rifling marks on them after they’ve been shot, the barrel is fine and that the pellets should shoot straight. I haven’t yet tested the gun after cleaning as I ran a Boresnake with Break Free CLP through the barrel around fifteen times, and when I was done, it was late.
I’m sure I’ll get to the bottom of this. It’s just a matter of time. The good thing is that I’ve eliminated some of the other possible causes. I’ll keep you posted.