Flash BT, XL?

[VaporTrail]

Oh for the love of pete. Seriously?  Now a forward side lever Flashpup...I'm on board with that! Lol...its almost like I'm a little Hatsan fanboy.    I hope they make it forward side lever.

Thanks for the tip on the barrel. I wonder if it'd be worth it to crank the speed up a little more. I think I saw something like 1021 at one point with the 28gr slugs. Maybe I'll move up to a 30-something and keep the speed at 970ish.

I don't know why, but these Bullbosses just seem find a place with me. I enjoy them.

[Rallyshark]

Oh for the love of pete. Seriously?  Now a forward side lever Flashpup...I'm on board with that! Lol...its almost like I'm a little Hatsan fanboy.    I hope they make it forward side lever.

Thanks for the tip on the barrel. I wonder if it'd be worth it to crank the speed up a little more. I think I saw something like 1021 at one point with the 28gr slugs. Maybe I'll move up to a 30-something and keep the speed at 970ish.

I don't know why, but these Bullbosses just seem find a place with me. I enjoy them.

It is a rear side lever, not forward, unfortunately.  If the gun is shooting good at  where you have it, I'd leave it alone man.  If you want more speed, go with a lighter slug would be my thoughts.  That thing is a little beast where it is set already,lol. 

[Rallyshark]

I made a change to the barrel band set up on the Turkenstein.  I used a BT65/Flash barrel band with the screw section lopped off to secure the barrel at the end of the air cylinder.  That bad boy ain't moving at all now   I finally got a chance to stretch it's legs today as well!  It did outstanding with the regulated tune and the 18 grain NSA slugs.  I guessed on a HS adjustment, but they were probably shooting around 880-900fps, and I was getting 42 shots before a refill was needed. 

The gun was shooting pieces of gravel off the top of a gate at 110 yards with ease.  I also stretched it out farther, and was hitting an aspirin bottle at 165 yards    I hit it 3 times, and stopped, because I didn't want to walk down there and set it back up a anymore.  A can at 150 yards would be very high percentage shot.  I'm pretty darn happy with the Turkenstein after today.  I feel like I finally built the .177 slug shooter I've been wanting to build for a year or two now.  Having a .177 that can RELIABLY make shots at those ranges is pretty awesome.  As for energy, those little slugs hold engery better than one would expect at those distances.  At 150 yards, it was still doing a clean pass through on a water bottle full of water, so that will still take out critters at that distance.  Next time I go out, I may have to try it unregulated with a full head of steam and 21 grain NSA slugs.  I'm thinking 200 yards may be doable on some evil cans and bottles

[Thane]

150 yds with a .177 is impressive! I've got a .177 Bullboss that's been collecting dust, time to liven it up.

[Rallyshark]

150 yds with a .177 is impressive! I've got a .177 Bullboss that's been collecting dust, time to liven it up.

Those .177 slugs are awesome, if you can get a barrel that likes them! This unchoked polygon barrel is the third barrel I've tried with them, and the first one that really liked then.  The Bullboss shouldn't have a problem getting decent speed out of them. What was great is I didn't have shoot them super fast to get accuracy from them. They do shoot even better out of this barrel around 1000 fps though.

[Rallyshark]

I did a little more shooting with the .177 slug gun today, but this time I focused on the NSA 15.5 grain.  I settled on a tune 935fps.  I'm happy to report that the 15.5 grain do as well at distance as the 18 grain slugs do   I was able to hit a can at 150 yards 5 shots in a row, and yes, the aspirin bottle at 165 was also a victim of the little bitty slugs,lol.  As a matter of fact, I managed my longest airgun hit ever on a target at 175 yards(lasered) with the 15.5 NSAs.  I don't have any pictures, but there were two witnesses.  In case you're wondering, that was with a 26 MOA dead center holdover, haha! 

Keep in mind all this was regulated and nowhere near what the gun is capable of power wise.  After today, I'm even more convinced that I can make a 200 yard shot, unregulated with some more speed behind the slugs.  That is especially true for the 18 or 21 grain cruising around 1000 fps.  Next time I make it to the range, I will pull the reg and up the juice so I can test that theory.  I could probably do it with the gun where it is currently tuned, but I'd probably have dial that one in, and I don't like to dial in shots(because I'll forget I did it later and miss ).  Right now, I'm just loving me some tiny little bullets!

[Taso1000]

Hey Donny!

Great results with the NSA slugs!  What twist rate does that LW poly barrel have?  17.7"?

Thank you!

Taso

[Rallyshark]

Hey Donny!

Great results with the NSA slugs!  What twist rate does that LW poly barrel have?  17.7"?

Thank you!

Taso

I don't know how I forgot to reply, sorry about that   Yes, it is the standard 1:17.7 twist.  It seems to do best at higher speeds with this twist.  The slugs shooting at slower speeds are dang accurate, but don't settle down until around 50 yards, and they are money at 100 yards.  If I kick the speed up to 950-970 depending on the slug, they are settled down at 30 yards   Those barrels you have will probably behave much better at slower speeds too I'd think!  Have you got one mounted to a gun yet? 

[Taso1000]

Thanks Donny!

Yes.  I have one mounted in a Daystate Airwolf with a Heliboard Xtreme so that I could easily adjust the velocities on the fly. 

The problem is that I haven't found a place to shoot 100 yards and beyond local to where I live.   

Taso

[Rallyshark]

Thanks Donny!

Yes.  I have one mounted in a Daystate Airwolf with a Heliboard Xtreme so that I could easily adjust the velocities on the fly. 

The problem is that I haven't found a place to shoot 100 yards and beyond local to where I live.   

Taso

Oh man, that should be an AWESOME setup right there!  Have you shot it at shorter distance, and what kind of speed are you getting out of it and which weights?  I've been wanting to hear about your barrel ever since you said you where getting them made  

[Dan H]

Donny nice "figure it out " on this one … I know you were thinking it might work before … glad to hear the results that it works  …. 

Ok now I just wonder if I can put the bt65 air tube on the Vectis lever action ?... it states that it has the aluminum tube on the Hatsan web site ,another question if it works is the  length ,and weight amount of the  air tube  …

 I have the bt65 carnivore .30,and gladius .25 with the same air tube , I need to do some measuring ,and see what this adds up to … 

[Rallyshark]

I'm glad too, haha!

The cylinder will probably fit the Vectis, but your problem will be the short barrel. If I remember correctly, you'll need a barrel that is at least 22" long to clear the end of the cylinder.  That is, if you want to have an LDC

[Dan H]

I'm glad too, haha!

The cylinder will probably fit the Vectis, but your problem will be the short barrel. If I remember correctly, you'll need a barrel that is at least 22" long to clear the end of the cylinder.  That is, if you want to have an LDC

It looks like that air tube would be about even with  the air stripper at the end of the Vectis ,and there is  clearance issues with the under side of the air stripper … so yep ! a new barrel/LDC ! I don't think I would go there since I am trying to keep it light/cheap ,and I got a bunch of long barrel guns in .25 's any way ….

[Rallyshark]

I'm glad too, haha!

The cylinder will probably fit the Vectis, but your problem will be the short barrel. If I remember correctly, you'll need a barrel that is at least 22" long to clear the end of the cylinder.  That is, if you want to have an LDC

It looks like that air tube would be about even with  the air stripper at the end of the Vectis ,and there is  clearance issues with the under side of the air stripper … so yep ! a new barrel/LDC ! I don't think I would go there since I am trying to keep it light/cheap ,and I got a bunch of long barrel guns in .25 's any way ….

This is why I built this gun as a pup from the start, because I knew I wanted a longer barrel to make the power, and I'm not that keen on a 50" rifle   I totally agree with you.

[Dan H]

I'm glad too, haha!

The cylinder will probably fit the Vectis, but your problem will be the short barrel. If I remember correctly, you'll need a barrel that is at least 22" long to clear the end of the cylinder.  That is, if you want to have an LDC

It looks like that air tube would be about even with  the air stripper at the end of the Vectis ,and there is  clearance issues with the under side of the air stripper … so yep ! a new barrel/LDC ! I don't think I would go there since I am trying to keep it light/cheap ,and I got a bunch of long barrel guns in .25 's any way ….

This is why I built this gun as a pup from the start, because I knew I wanted a longer barrel to make the power, and I'm not that keen on a 50" rifle   I totally agree with you.

Maybe at some point Hatsan will make a long version of the flashpup design , like they did with the gladius … 

[Rallyshark]

I will say, a longer barrel COMPLETELY changes the tuning options!  The extra length really helps make the power easier, and stretches the strings a bit on the higher power tunes.  On my SFP .22 with the 700mm liner barrel, I'm getting 20 shots around 53-54 fpe out of that little 165cc cylinder    The Turkenstein isn't nearly as efficient with the 23.5" LW barrel, but most of that is due to the fact that I'm shooting .177 slugs.  Those little buggers take some air to move!  On the bright side, the Turkenstein is insanely quiet for a 30+fpe .177.  The efficiency is better when I'm not running it regulated too. 

[Dan H]

I will say, a longer barrel COMPLETELY changes the tuning options!  The extra length really helps make the power easier, and stretches the strings a bit on the higher power tunes.  On my SFP .22 with the 700mm liner barrel, I'm getting 20 shots around 53-54 fpe out of that little 165cc cylinder    The Turkenstein isn't nearly as efficient with the 23.5" LW barrel, but most of that is due to the fact that I'm shooting .177 slugs.  Those little buggers take some air to move!  On the bright side, the Turkenstein is insanely quiet for a 30+fpe .177.  The efficiency is better when I'm not running it regulated too.

Every time I get the option I go long barrel … like with the XP Ranger .45 I just couldn't resist  ..and had Dan build his 36inch barrel with matching air tube set up , the air tube is special chromoly with the best wall consistent specs that comes from 1 company with a burst rate of 18,000 or so psi  ...

I have  had thoughts of running the gun at over 5000 psi with a higher pressure spring , right now I am pushing the .425 g flat nose about a 1 inch long piece of lead at around 900fps at 4300 psi ..

Now since the barrel is 36 inches long you get a long hard kick out of this gun when you fire it with the 425g  , you have to use a strong hold on the gun to get the accurate shots the TJ barrel is capable of , some guys over in Europe use weights attached to the end of the air tube for better control     

To be honest the real fun  shooting /plinking with the gun is 140g smooth round ball that I cast on low power 3400psi at around 1200 fps teathered to a scba 88 tank ,so you can shoot like crazy !  …. so this gives a great example of how a longer barrel can deliver crazy power out of ,and air gun …. all be it a extreme example at 36inches …LOL .. .       

[Rallyshark]

I will say, a longer barrel COMPLETELY changes the tuning options!  The extra length really helps make the power easier, and stretches the strings a bit on the higher power tunes.  On my SFP .22 with the 700mm liner barrel, I'm getting 20 shots around 53-54 fpe out of that little 165cc cylinder    The Turkenstein isn't nearly as efficient with the 23.5" LW barrel, but most of that is due to the fact that I'm shooting .177 slugs.  Those little buggers take some air to move!  On the bright side, the Turkenstein is insanely quiet for a 30+fpe .177.  The efficiency is better when I'm not running it regulated too.

Every time I get the option I go long barrel … like with the XP Ranger .45 I just couldn't resist  ..and had Dan build his 36inch barrel with matching air tube set up , the air tube is special chromoly with the best wall consistent specs that comes from 1 company with a burst rate of 18,000 or so psi  ...

I have  had thoughts of running the gun at over 5000 psi with a higher pressure spring , right now I am pushing the .425 g flat nose about a 1 inch long piece of lead at around 900fps at 4300 psi ..

Now since the barrel is 36 inches long you get a long hard kick out of this gun when you fire it with the 425g  , you have to use a strong hold on the gun to get the accurate shots the TJ barrel is capable of , some guys over in Europe use weights attached to the end of the air tube for better control     

To be honest the real fun  shooting /plinking with the gun is 140g smooth round ball that I cast on low power 3400psi at around 1200 fps teathered to a scba 88 tank ,so you can shoot like crazy !  …. so this gives a great example of how a longer barrel can deliver crazy power out of ,and air gun …. all be it a extreme example at 36inches …LOL .. .     

Nice!  You're playing with bigger chunks of lead than I am, haha.  That barrel is longer than my whole gun!  The same principals apply though.  The longer barrels do give you a lot more options on tuning for sure.  I have to stick to the smaller calibers where I am, otherwise I'd only be able to shoot them somewhere else.  I mean, I like shooting at my house, but the large calibers just wouldn't be safe to shoot at home. 

[Rallyshark]

Thanks Donny!

Yes.  I have one mounted in a Daystate Airwolf with a Heliboard Xtreme so that I could easily adjust the velocities on the fly. 

The problem is that I haven't found a place to shoot 100 yards and beyond local to where I live.   

Taso

Taso, I was thinking...  You should just ship that Daystate to me, so I can test it for you  

[Rallyshark]

I got a couple more pictures of the Turkenstein today with it's new Bushnell Nitro 5-20x44 FFP mounted   These pictures also show the extra barrel band I added at the end of the cylinder to make it super rigid.  It is a BT65 barrel band with the screw mount on the bottom chopped off.  It has two smooth faced grub screws in the band to keep it fixed on the cylinder with NO movement.