Bull Boss Arrived Have A Couple Concerns

[josixpack]

Got the Hatsan Bull Boss .25 yesterday along with the Hatsan bipod and a Leapers 3-12 AO 44 SWAT scope with high rings and the 60mm adjustment ring. Attached all the accessories and sighted it at 10 yards. 

Holly cow, this thing is a beast or the BOSS!!  I thought my Air Force Talon SS .25 hit hard but I’m pretty sure the boss smacks things around a little harder and accuracy is spot on at 10 yards.  Couple times I thought I was out of pellets as they were going through the same hole time and time again.  The side cocking lever and 9 shot magazine are awesome. It was dark out so I couldn’t get outside to shoot any farther.  Maybe tonight was well as some chrony readings.

Few things do bug me a little, one is the air tube moves up and down just a little bit and rattles against the barrel.  Should this be happening? Does anyone else have this issue??  Not that big of a deal and I’m thinking some soft end of Velcro stuck to the underside if the barrel will fix it.  Also, the gauge on the air tube, very hard for me to read and I don’ t like that I have to put my head in front of the barrel to even try to read it.  Maybe a magnifying glass and a couple mirrors? Lol! Removing the air tube made it somewhat easier. Finally the fill probe seems a little finicky on how it’s inserted into the fill hole as i have to move it around some in order for it to fill which kind of freaks me out dealing with high pressure air.  And as everyone says it is a little heavy but shoulders well. 

Hopefully none of my concerns are deal breakers and overall first impressions are very good.

Thanks for any input!

[customcutter]

I've been seriously looking at the Bullboss also.  You are not the first to report problems with the air cylinder rubbing the barrel.  IIRC one poster had accuracy issues and sent it back.  Next one was better.  I have a BT 65 so I can sympathize with checking the gouge.  The H in Hatsan stands for Heavy. LOL. Stretch out the legs and make sure you don't have an accuracy problem at longer distances.

Good luck.

[Zebra]

I've been seriously looking at the Bullboss also.  You are not the first to report problems with the air cylinder rubbing the barrel.  IIRC one poster had accuracy issues and sent it back.  Next one was better.  I have a BT 65 so I can sympathize with checking the gouge.  The H in Hatsan stands for Heavy. LOL. Stretch out the legs and make sure you don't have an accuracy problem at longer distances.

Good luck.

The Bullboss is based on the AT44 action. The air cylinders do have some flex unfortunately. If you apply too much torque to the stock screws then the cylinder will touch the barrel. I don't think there is any way around that except to make sure you don't over-tighten them.

You don't want the probe to be a loose fit. You only need to worry if it is tearing the O ring as it goes in. You could try divers grease on the probe to help it go in a little easier. You could drill out the hole if needed but I would see that as a last resort for obvious reasons.

Hatsan guns are ok for the price but you'll have to put up with some build quality issues. They are mass produced so you can't expect perfection. In general, I think they do an ok job considering. I find it more frustrating when I get issues like that (or worse on $1500 air guns).

[josixpack]

I may have seen that, however, my issue is not that it rubs but that there is some flex as mentioned so the end if the air tube knocks on the barrel a little bit.  The only thing holding it in place is the screw probe on the other end so I don’t know if you could get around that.  The Velcro may stop the knocking sound.

 I filled it over lunch and again had a hard time getting a seal so it would fill.  Finally, after moving he probe some and opening the tank valve a little more it finally sealed and starting filling.  I did leak air until it got to about 1500 on my tank gauge and then it started to fill. 

Also, I got a couple extra magazine plus the two that came with the gun and one will not advance when cocked.  The other three work fine.  Although, I don’t know if it was one that came with the gun or one of the extra I bought.  Should I call Hatsan or pyramydari?

[pcp_Dave]

I'd call Pyramyd. They have made things good for me.

[Hagen]

I sent mine back for the exact reasons you specified. The air cylinder would hit the barrel at the shot. It was causing the pellets to clip when they left the barrel. Wasn't to noticeable close but stretch it out and couldn't hit a 2 inch dot at 25 yards.

My fill probe was the same also. Had to jack with it to get it to fill. It was the only gun I've had with a removable fill probe, so might be normal?

Good luck
Hagen

[LDP]

Unacceptable. I would be sending it back no question.

[Rallyshark]

I may have seen that, however, my issue is not that it rubs but that there is some flex as mentioned so the end if the air tube knocks on the barrel a little bit.  The only thing holding it in place is the screw probe on the other end so I don’t know if you could get around that.  The Velcro may stop the knocking sound.

 I filled it over lunch and again had a hard time getting a seal so it would fill.  Finally, after moving he probe some and opening the tank valve a little more it finally sealed and starting filling.  I did leak air until it got to about 1500 on my tank gauge and then it started to fill. 

Also, I got a couple extra magazine plus the two that came with the gun and one will not advance when cocked.  The other three work fine.  Although, I don’t know if it was one that came with the gun or one of the extra I bought.  Should I call Hatsan or pyramydari?

Definitely send back the magazine.  I'm not sure about the gun.  It depends on how much wobble you have with the air cylinder.  Is it flopping around and rattling on the barrel easily?  If that is the case, yes send it back.  If you are just able to move it a little under tension, that is normal.  If it is almost or touching the barrel, this would be amplified of course.  If that is the case, it is more of a judgement call on your part.  I mean there is a little flex to it, but it shouldn't be flopping around.  I can make mine tap the barrel slightly if I shake it up and down, but it isn't something that happens without me trying to make it do it.  Mine is very close to the barrel, but other than that its a tack driver.  If yours is like mine, and the gun shoots great, then the small patch of velcro may be fine if you're fine with it.

I've found the fill probes to be a tight fit on all the Hatsans I've had, and I usually rotate it a little while inserting it.  I goes in at an odd angle too.  If it is to the point of cutting the o-rings, then that isn't acceptable.  I will say it shouldn't have to be pumped up to 1500psi to seal.  If that were the case, I'd never get my guns pumped up, since I hand pump.

The most important thing is to see how it shoots at 25-50 yards.  10 yards won't tell you what you need to know.  If you try different pellets and can't find one that groups under an inch at 25 yards, send it back in my opinion.  The Bullboss is a rough gun, but it shouldn't be to the point of inaccuracy and parts flopping around.  Descriptions on here may not tell the whole story, and are hard to convey exactly in some cases.  Long story short, its a bit of a judgement call.  Most importantly, if you aren't happy, send it back!  Don't be afraid to send it back if it doesn't meet your expectations.  PA will take care of you if that's the case.

I've been very happy with mine, and they do have great power out of the box, and even more with some elbow grease   I don't know your shooting ability, and everyone is different, but I personally wouldn't be happy if it wouldn't group .5" at 25yards. 

[smythsg]

The cylinder on my Bullboss moved quite a bit also and I considered sending it back for that reason. However I did notice that when I screwed the cylinder on very tight it would just rest against the barrel and not move. I also considered the velcro trick and may still try that, but so far it seems to be staying in place and not affecting accuracy. (time will tell)  As you can tell, I did keep the Bullboss and other than the weight I like it a lot. Hatsan does need to do something about the cylinder movement, maybe in the Version 2...haha

[Tofazfou]

Hatsan air cylinders are known to be on the loose side.  Tighten it down well

[josixpack]

I may have seen that, however, my issue is not that it rubs but that there is some flex as mentioned so the end if the air tube knocks on the barrel a little bit.  The only thing holding it in place is the screw probe on the other end so I don’t know if you could get around that.  The Velcro may stop the knocking sound.

 I filled it over lunch and again had a hard time getting a seal so it would fill.  Finally, after moving he probe some and opening the tank valve a little more it finally sealed and starting filling.  I did leak air until it got to about 1500 on my tank gauge and then it started to fill. 

Also, I got a couple extra magazine plus the two that came with the gun and one will not advance when cocked.  The other three work fine.  Although, I don’t know if it was one that came with the gun or one of the extra I bought.  Should I call Hatsan or pyramydari?

Definitely send back the magazine.  I'm not sure about the gun.  It depends on how much wobble you have with the air cylinder.  Is it flopping around and rattling on the barrel easily?  If that is the case, yes send it back.  If you are just able to move it a little under tension, that is normal.  If it is almost or touching the barrel, this would be amplified of course.  If that is the case, it is more of a judgement call on your part.  I mean there is a little flex to it, but it shouldn't be flopping around.  I can make mine tap the barrel slightly if I shake it up and down, but it isn't something that happens without me trying to make it do it.  Mine is very close to the barrel, but other than that its a tack driver.  If yours is like mine, and the gun shoots great, then the small patch of velcro may be fine if you're fine with it.

I've found the fill probes to be a tight fit on all the Hatsans I've had, and I usually rotate it a little while inserting it.  I goes in at an odd angle too.  If it is to the point of cutting the o-rings, then that isn't acceptable.  I will say it shouldn't have to be pumped up to 1500psi to seal.  If that were the case, I'd never get my guns pumped up, since I hand pump.

The most important thing is to see how it shoots at 25-50 yards.  10 yards won't tell you what you need to know.  If you try different pellets and can't find one that groups under an inch at 25 yards, send it back in my opinion.  The Bullboss is a rough gun, but it shouldn't be to the point of inaccuracy and parts flopping around.  Descriptions on here may not tell the whole story, and are hard to convey exactly in some cases.  Long story short, its a bit of a judgement call.  Most importantly, if you aren't happy, send it back!  Don't be afraid to send it back if it doesn't meet your expectations.  PA will take care of you if that's the case.

I've been very happy with mine, and they do have great power out of the box, and even more with some elbow grease   I don't know your shooting ability, and everyone is different, but I personally wouldn't be happy if it wouldn't group .5" at 25yards.

I'll give pyramyd a call they've always treated me well.  Just thought if it was one that came with the gun pyramyd may not be responsible.

It's definitely not flopping around by any means just a little flex and it shoots real well at 25 yards. I'll have to wait to open things up any further.

Filled it this morning and had a little better luck.  I'm thinking i just need to get used to it.  Could pelgun oil be used on the orings?

Haven't had a lot of time with it but so far i'm loving it and think it a keeper!

Thanks for all the input!

[Harold999]

they do have great power out of the box, and even more with some elbow grease  

Do you know how much fpe gain is possible with tightening the hammer spring? Or are there better options to get more power?
I also wonder what the heaviest .25 pellet is that will still fit in the mag.

[Rallyshark]

I may have seen that, however, my issue is not that it rubs but that there is some flex as mentioned so the end if the air tube knocks on the barrel a little bit.  The only thing holding it in place is the screw probe on the other end so I don’t know if you could get around that.  The Velcro may stop the knocking sound.

 I filled it over lunch and again had a hard time getting a seal so it would fill.  Finally, after moving he probe some and opening the tank valve a little more it finally sealed and starting filling.  I did leak air until it got to about 1500 on my tank gauge and then it started to fill. 

Also, I got a couple extra magazine plus the two that came with the gun and one will not advance when cocked.  The other three work fine.  Although, I don’t know if it was one that came with the gun or one of the extra I bought.  Should I call Hatsan or pyramydari?

Definitely send back the magazine.  I'm not sure about the gun.  It depends on how much wobble you have with the air cylinder.  Is it flopping around and rattling on the barrel easily?  If that is the case, yes send it back.  If you are just able to move it a little under tension, that is normal.  If it is almost or touching the barrel, this would be amplified of course.  If that is the case, it is more of a judgement call on your part.  I mean there is a little flex to it, but it shouldn't be flopping around.  I can make mine tap the barrel slightly if I shake it up and down, but it isn't something that happens without me trying to make it do it.  Mine is very close to the barrel, but other than that its a tack driver.  If yours is like mine, and the gun shoots great, then the small patch of velcro may be fine if you're fine with it.

I've found the fill probes to be a tight fit on all the Hatsans I've had, and I usually rotate it a little while inserting it.  I goes in at an odd angle too.  If it is to the point of cutting the o-rings, then that isn't acceptable.  I will say it shouldn't have to be pumped up to 1500psi to seal.  If that were the case, I'd never get my guns pumped up, since I hand pump.

The most important thing is to see how it shoots at 25-50 yards.  10 yards won't tell you what you need to know.  If you try different pellets and can't find one that groups under an inch at 25 yards, send it back in my opinion.  The Bullboss is a rough gun, but it shouldn't be to the point of inaccuracy and parts flopping around.  Descriptions on here may not tell the whole story, and are hard to convey exactly in some cases.  Long story short, its a bit of a judgement call.  Most importantly, if you aren't happy, send it back!  Don't be afraid to send it back if it doesn't meet your expectations.  PA will take care of you if that's the case.

I've been very happy with mine, and they do have great power out of the box, and even more with some elbow grease   I don't know your shooting ability, and everyone is different, but I personally wouldn't be happy if it wouldn't group .5" at 25yards.

I'll give pyramyd a call they've always treated me well.  Just thought if it was one that came with the gun pyramyd may not be responsible.

It's definitely not flopping around by any means just a little flex and it shoots real well at 25 yards. I'll have to wait to open things up any further.

Filled it this morning and had a little better luck.  I'm thinking i just need to get used to it.  Could pelgun oil be used on the orings?

Haven't had a lot of time with it but so far i'm loving it and think it a keeper!

Thanks for all the input!

I would just use a wee bit of silcone grease on it.  You can get a small container of it at any hardware store.  I've used it many times, but now I use the silicone grease that came with my Hill Mk4 pump, because it is a little thicker.  You can actually order a tube of the Hill grease too I think.

they do have great power out of the box, and even more with some elbow grease  

Do you know how much fpe gain is possible with tightening the hammer spring? Or are there better options to get more power?
I also wonder what the heaviest .25 pellet is that will still fit in the mag.

The amount of fpe gain would depend on where it is shooting currently.  If you were to go min to max I would guess you would have an adjustment range from 30-50fpe(+ or - 5fpe).  If you want the best you can get, you will want to mod the valve/ports and adjust the hammer spring as well.  I think the 31 grain barracudas will fit, but I'm not positive on that.