Sythetic Flashpup Adventure Started

[Rallyshark]

Interesting..the previous testing was done unregulated.
This time i lower the reg down to 150 bars. i got 899fps with 34 grains. That big plenum really does wonders.

Nothing at all wrong with that.  I'm sure the shot count will be decent as well.  60 fpe in that little gun makes for a good compact hammer  

[darkcharisma]

well, it is not exactly compact compared to other bullpups. But this will be a "do all" gun. bench, bush, free hand.

center of balance is under the triggger and really close to the grip. I will be adding a longer barrel for power and bench work, may even add .30 cal or .172.

[Ed24]

Hey guys, just wanted to jump in here with my syn .22 pup. Just shot the best group I've ever shot with any gun 50yards shooting Air Arms 18gr at 825fps. The whole 5 shot group is 1/4" and center to center about 3/16" you gotta love these things!!!

[mrbulk]

well, it is not exactly compact compared to other bullpups. But this will be a "do all" gun. bench, bush, free hand.

center of balance is under the triggger and really close to the grip. I will be adding a longer barrel for power and bench work, may even add .30 cal or .172.

Duy, what gun is that below the FlashPup? The "Priest"?

[Rallyshark]

well, it is not exactly compact compared to other bullpups. But this will be a "do all" gun. bench, bush, free hand.

center of balance is under the triggger and really close to the grip. I will be adding a longer barrel for power and bench work, may even add .30 cal or .172.

I'm sure it could handle either one of those calibers too.  You could slap a 350cc bottle on it too, if you wanted.  If you want to go .177 instead of .172, I've had really good results from the unchoked LW poly barrel.  It would save you from making the ammo, unless you like to do that...  It is sub MOA with all of the NSA slugs, your gun has the juice to push them easily.  I don't always recommend that to everyone, since the slugs work best around 1000+ fps, and it takes a good breathing gun to move them, especially the 18-21 grain ones. 

I think it could handle .30 to with a longer barrel for sure.  I guess the limiting factor may be the breech and probe?  That bottle block happens to be in the perfect spot for an added barrel band.  That would really close up the "box" on all the mounts and make it very rigid.  It may take a little stress off the factory barrel band.  Like I said before though, the sky is the limit almost with whatever you want that gun to do now.  Great job! 

Hey guys, just wanted to jump in here with my syn .22 pup. Just shot the best group I've ever shot with any gun 50yards shooting Air Arms 18gr at 825fps. The whole 5 shot group is 1/4" and center to center about 3/16" you gotta love these things!!!

That's a great group! 

well, it is not exactly compact compared to other bullpups. But this will be a "do all" gun. bench, bush, free hand.

center of balance is under the triggger and really close to the grip. I will be adding a longer barrel for power and bench work, may even add .30 cal or .172.

Duy, what gun is that below the FlashPup? The "Priest"?

Yep, that's a Priest I believe. 

[darkcharisma]

I think NSA just released the new bulk version of .177. i wonder if they will shoot out of your unchoked Lw poly barrel?

if they do moa groups still, ill grab one poly barrel for sure.  i will probably play with FX liners in the .25 and .30 cal while waiting for more data on the nee .177

i plan on using liners and thimbles to mount barrels, so the breech should be fine i think.

its getting heavier...4400kg with that tiny scope. almost bullboss territory

[Rallyshark]

I just ordered a box of each weight, so I should be able to let you know soon!

Wow, that little gun is gaining weight. I guess that bottle and block are heavier than I thought?

[darkcharisma]

Looking forward to that.

i pretty much cut off only 20cc worth of tubing and add a bottle and a block probably +1lbs. that scope with the scope cam is probably +1.5lbs. thats why i pulled out the Priest, unscoped+carbon bottle, it weights 2991grams vs the FX Impact unscoped at 3100grams vs the flashpup loaded 4400grams.  weight does matter! looks like adding longer barrels will make it a good looking bench gun. which i dont mind...

[Rallyshark]

I didn't even think about the fact that you were starting with almost as much weight, prior to adding the bottle.  That makes sense.  The good news is making a barrel out of a slug liner won't really gain much if any weight, if you're using carbon to sleeve it.  Actually, I think both the 500 and 600 mm ones I did were lighter than the factory barrel.  I used 6061 for the threaded piece on the end to also keep the weight down.  I think the 700mm one I did was only slightly, if any heavier than the factory barrel. 

On the .177 poly barrel, I made it the same way starting with a .47 blank, because I didn't want to put a .63 chunk of steel on the gun.  The only options for that blank from LW are .47 or .63.  They have the .55 listed, but apparently that diameter isn't available here.  I turned down the breech end of the blank and made a thimble(like the liners), and also turned down the muzzle end just a little for the aluminum threaded section.  I did everything I could to keep the weight manageable, since I had a Bullboss once, and I didn't want to turn the Flash into another one, haha. 

[Rallyshark]

I think NSA just released the new bulk version of .177. i wonder if they will shoot out of your unchoked Lw poly barrel?

if they do moa groups still, ill grab one poly barrel for sure.  i will probably play with FX liners in the .25 and .30 cal while waiting for more data on the nee .177

i plan on using liners and thimbles to mount barrels, so the breech should be fine i think.

its getting heavier...4400kg with that tiny scope. almost bullboss territory

Duy, I just did some quick testing with the new NSA slugs, and I say go ahead do that unchoked polygon barrel   I imagine the unchoked standerd rifled barrel would do very well too.  They are just as accurate as the old 15.5 grain were.  Even the 12.5 grain are accurate.  Also, I told a lie about how I did my polygon barrel    I did not do a thimble on the breech end.  I only had to take wee bit off for it to fit the breech, since I used the .47 OD barrel.  The hole in the breech on the flash is just a hair under .47.  I had a brain skip there.  I did turn down the muzzle end a little for the aluminum 1/2-20 piece on the end though.  I hope that helps.

[darkcharisma]

whats the group like at 50 and 100 yards? under 2 inches at 100?

[Rallyshark]

whats the group like at 50 and 100 yards? under 2 inches at 100?

I was only able to do a quick test after work today at 30 yards, so I'll have to get back to you on 50-100.  I have little doubt they'd be under 2" at 100 yards.  They behave pretty much just like the 15.5 do, and it would do 1" at 100 with those.  I'm kind of excited about how well the 12.5 grain did too.  I probably shot one of my best groups with slugs at 30 yards with those at 1035 fps.  Every group I shot today with both weights was under a dime, regardless of speed.  That was with a barrel I haven't cleaned in a while too.  This barrel has always done a little better at 50 than at 30 yards, I guess because the slugs haven't completely settled down at 30?  I'll put it like this, I've never had them de-stabilize at long range like some pellets do. 

[Rallyshark]

Duy, I just did some testing at 45 yards, which is the longest I can shoot at my house.  The 12.5 and 15 grain NSAs are still holding up just fine.  All groups can be covered by a dime.  No pics, because I was shooting other stuff and a lot of it.  You know, when you start using holes as targets over and over...  I still think an unchoked polygon or standard unchoked LW will work great with the .177 slugs and your SFP  

[darkcharisma]

thanks for all the testings. i got some slugs ordered. ill dig into the barrels bin once it gets here.

[Rallyshark]

I'm sure you'll come up with something that makes those little slugs work for ya

[503Manny]

So, it looks like COVID has also affected air rifles supply. It looks like there's not any Flashpup Synth available at any store any time soon. Not even refurbs at Hatsan's website.

Any of you fellas has gotten bored of yours? I'll be happy to take that weight of your shoulders...

[Rallyshark]

Mine ain't going anywhere,lol!  It is shooting too good, and I've put too much work into it.  Fwiw, I wouldn't sell my Wood Flashpup either for the same reasons

[darkcharisma]

I rarely sell my guns, i collect and pile them up. I think all the airguns i decide to buy will almost become a "don't sell" gun.

[mrbulk]

Mine ain't going anywhere,lol!  It is shooting too good, and I've put too much work into it.  Fwiw, I wouldn't sell my Wood Flashpup either for the same reasons

I was shopping hard for one at one time but couldn't find any, then I bought a bunch of other stuff and that was it for me for awhile...and now buying all these suppressors...

[screwwork]

So, it looks like COVID has also affected air rifles supply. It looks like there's not any Flashpup Synth available at any store any time soon. Not even refurbs at Hatsan's website.
Any of you fellas has gotten bored of yours? I'll be happy to take that weight of your shoulders...

.177 and .22 cal are in stock at pyramyd air
https://www.pyramydair.com/product/hatsan-flash-qe-pcp-air-rifle?m=4581