Author Topic: Anyone with a Hatsan 95 Vortex in .22 at altitude (Read 4570 times))

CO_Steve · « **on:** January 20, 2016, 04:49:57 PM »

I got one of the refurb 95s about a month ago. It seems to want to not shoot as accurately as everyone claims. I've checked a lot of things. Today I ran some CPs through the crony and it was shooting 665-680. I know altitude slows springers down some (6000 ft) but my other guns don't suffer this much. What should I be seeing?

Steve

GD Giles · « **Reply #1 on:** January 20, 2016, 06:27:51 PM »

Mine dropped to 530 and it was a defective seal. You should be closer to 800 so there's something up for sure.

CO_Steve · « **Reply #2 on:** January 20, 2016, 06:35:09 PM »

Thanks. Were you seeing random fliers? I can put three shots in one hole at 50 feet and the next one is 1-2" off.

I'm still under warranty but I'd just as soon open it up and put a JM seal in it anyway.

S

GD Giles · « **Reply #3 on:** January 20, 2016, 06:40:37 PM »

Yes, and mine were going farther than 3" off.

Gut2Fish · « **Reply #4 on:** January 20, 2016, 08:20:32 PM »

Left to right is probably not getting used to the hold the gun requires. Up and down by a few inches is probably one or both of the seals. I've heard of a tissue test to check the breech seal.

But then if the pellets are not snug but loose or have great variance from lose to tight fit then groups will suffer tremendously too.

CO_Steve · « **Reply #5 on:** January 20, 2016, 09:11:07 PM »

I've been working for weeks trying to figure out the right hold for this thing. Just when I start to get good groups something goes off and it throws a flier, or two, or almost every shot. I ran the crony thinking I'd see some large variation but it was pretty consistent. The breech was blowing air (tissue test) but I got that sealed up with no improvement in groups. I don't have any other pellets to try right now but that's next.

GD Giles · « **Reply #6 on:** January 20, 2016, 09:20:37 PM »

Make sure the screw that attaches the stock to the action at the back of the trigger is tight. These are notorious for coming loose.

CO_Steve · « **Reply #7 on:** January 20, 2016, 09:46:28 PM »

I've checked that often, always tight.

GD Giles · « **Reply #8 on:** January 20, 2016, 10:18:47 PM »

I hope mine stays tight now that the seal's fixed.

Nathan · « **Reply #9 on:** January 20, 2016, 10:20:36 PM »

Probably needs a piston seal. Hatsan's are notorious for having undersized piston seals.

Nathan

SteveP-52 · « **Reply #10 on:** January 21, 2016, 01:25:57 AM »

Try some different pellets and see what happens. H&N Field Target Trophy and JSB Exact's shoot the best in all 4 of my Hatsan's with RWS a close 2nd in the .22 and seem to be pretty uniform size wise. I have a tin of Crosman's but they either slide in all on their own and loose or need a fairly hard push to seat. My targets looked like I used a shotgun and buckshot...lol

CO_Steve · « **Reply #11 on:** January 21, 2016, 10:12:56 AM »

H&N FTT come in different head sizes. Where should I start?

Gut2Fish · « **Reply #12 on:** January 21, 2016, 10:38:49 AM »

Quote from: CO_Steve on January 21, 2016, 10:12:56 AM

H&N FTT come in different head sizes. Where should I start?

What have you used so far? If you used JSB already then they are sized (average of course) 5.52mm. I get great results from the 18.13 grain. Been thinking of H&N in 21 grain and trying the 5.53mm. That weight pellet is offered in 5.51-5.53mm. With the smaller power plant of 95 you'd likely be better off with lighter pellet and H&N 14.66 grain feild and trophy are offered in three sizes, 5.53-5.55mm.

I'd think you can't go wrong with the 5.53mm. Pyramyd air offers 4 tins for price of 3. You could always get 2 tins of each 5.53 and 5.54. That small of difference shouldn't change much but you may find there are NO loose fits with the 5.54 size and that would be ideal. In general up to .003mm oversize of actual barrel is perfect. What you may find is the 5.54 pellets at the largest end of range in that tin are just a bit overtight which would lead to some drag down the barrel and a tad less fps but perfect left to right accuracy. Then again they may be the perfect pellet. I'd certainly try that myself as I know the 5.53 will shoot very well but have heard others say some of tin is still a tad loose. I find this with the JSB too. Now that I think more on it I'd just go all 4 tins in 5.54mm. Wish that was offered in the 21 grain...

Nathan · « **Reply #13 on:** January 21, 2016, 10:59:04 AM »

Try shooting the gun with the iron sites and see if that helps reduce the flyer situation. If it does then the issue may be the scope. If you have another scope that you know is good try swapping scopes.
Make sure you're consistent in your hold. Even a little variation in hold from shot to shot can send a pellet off, giving the appearance of a "flyer".
Try other pellets.
Check the breech block tension too.

Nathan

HectorMedina · « **Reply #14 on:** January 21, 2016, 11:12:25 AM »

Quote from: CO_Steve on January 21, 2016, 10:12:56 AM

H&N FTT come in different head sizes. Where should I start?

H&N makes the 0.22"cal FTT in 3 head sizes: 5.53, 5.54, and 5.55:

http://www.hn-sport.de/en/air-gun-hunting-target-shooting/field-target-trophy-1

JSB makes the Exact Jumbo in 3 head sizes: 5.50, 5.51, and 5.52 :

http://www.schulzdiabolo.cz/en/pellets/exact-jumbo-22/

Pyramyd Air usually stocks a wide range of pellets, and they are usually friendly enough to get you what you need.
Call them and see what they have and what they can start you with.

DO remember that these are "nominal" sizes. Meaning that if you decide to take calipers to the heads you may measure something different than what is printed and that head size preference of YOUR barrel will vary from brand to brand. Still, within a given brand and model, if you find one head size that shoots better than others, look into it, and if you find one particular pellet that seems to be "magic" from YOUR barrel, buy all the tins you cannot afford of the same lot number.

HTH

Hector Medina

CO_Steve · « **Reply #15 on:** January 21, 2016, 04:47:45 PM »

It looks like right now all Pyramyd has is FTT in 5.53.

CO_Steve · « **Reply #16 on:** January 21, 2016, 05:13:38 PM »

So I just went and shots some strings. I was paying very close attention to consistent hold and release. I got a perfectly vertical string of ten pellets about 1.5" high. I noticed some shots even sounded different than others. I think it's time to get my spring compressor project going and get a new JM seal in this thing.

Gut2Fish · « **Reply #17 on:** January 21, 2016, 06:24:13 PM »

The gas rams only pop out about 1.5 inch and without massive power. Still need a screw type clamp to put it back in though. The ratchet type trigger clamps wont quite do the job. I used a pipe clamp and blocks of wood to not scratch the gun and a thick towel laid on table. That's it. Gas rams are far easier to work on than spring, a nice build compressor isn't actually needed.

CO_Steve · « **Reply #18 on:** January 21, 2016, 06:42:45 PM »

thanks, I was wondering about that. I had a compressor a few years ago and worked on a Gamo, my first project. It needed some help to go together and so I was building something that will do anything I have, including a FWB 124. I hear they are a test. Sounds like the gas rams won't be too much of a challenge.

CO_Steve · « **Reply #19 on:** January 22, 2016, 03:43:45 PM »

So I got my compressor setup. When I pulled the last pin things only moved back about 1/2". Is there something else than the obvious I need to take out?

Thanks

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Anyone with a Hatsan 95 Vortex in .22 at altitude

Author Topic: Anyone with a Hatsan 95 Vortex in .22 at altitude (Read 4570 times))