Hercules Bully owners- I may have solved the flex scope rail issue

That one is from Vortex but you can find them on amazon,eBay,midway and other places, what’s nice is you can get different offsets, different heights, it would bring your scope mounting back a bit to the 1st rail mount but yet keep the scope forward and be more sturdy. Probably cut off a bit more front rail if you wanted to clean that up a bit more.
 
Here is a taller one that I have on one of my ARs so I can leave the flip up sights on for backp if needed, I use them on 4 of my PBs.

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Nice find with that picatinny bottle clamp! I will definitely be ordering one of those!

I think I'm going to shorten and modify my stock scope rail to mimic the bullmaster rail and replicate what you have done. But, I will also fill those hollow voids with black epoxy to see if that adds some rigidity. 

That offset scope rail looks like an interesting option too
 
https://m.ebay.co.uk/itm/280cc-400cc-500cc-buddy-bottle-bipod-torch-triple-picatinny-clamp-50mm-60mm-/132750460009



make sure and tell him at the message center at check out, that you have a carbon fiber bottle that’s 61.50mm on your Bully. When you first pic the different options for bottle size, click on 60mm, then you pick how wide a clamp you want. I chose the 45mm wide, the widest he has, cause it comes with five picatinny lugs. It’ll give the bottle a beefy look. Him and I have messaged each other, and he knows that carbon fiber bottles are 61mm, so make sure and note that as a reminder to him that your Bully has a CF bottle.

with the rate of exchange, shipping, etc, it came out to $44.72 US dollars.
 
Nice find with that picatinny bottle clamp! I will definitely be ordering one of those!

I think I'm going to shorten and modify my stock scope rail to mimic the bullmaster rail and replicate what you have done. But, I will also fill those hollow voids with black epoxy to see if that adds some rigidity. 

That offset scope rail looks like an interesting option too

Matt, I thought also of filling the voids with either JBWeld or a product I like a lot called Mr Stickey. Awesome stuff, but I didn’t want to chance it not working. My Uncle is remaking that rail for me but at 3” shorter in length, and a solid one piece that mimics the bullmaster rail. Call it silly, but I like to have options. In case one day I want the bottle cover back on, I’ll slip it on with my uncles rail, or I may keep it as is for awhile with the bullmaster rail and that bottle clamp.

got an email out to a buddy of DonnyFL, who Donny thinks can shorten my barrel shroud so the moderator starts about an inch after the end of the bottle. If he says that job is a piece of cake, I’ll order a new shroud from Hatsan and just have it shipped to him.
 
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This is a pic I found on the web, so I know someone has shortened his shroud. Wish I knew who owned this gun, then I could call him to find out who did it and how many(if any) internal baffles he kept from the factory. I like this look a lot. 

My other option is to see if this shroud is the same as the ones on a Marauder. If so, I know Tim Hill sells custom length shrouds for marauders, and I’ll hit him up on a length. Got to make sure the threads are the same as it screws into the receiver first.
 
So I was about to buy that bottle clamp(which is pretty sweet btw) ...then I had an idea I figured I would try first... this is not as good as what you have done but it is ok for reusing the stock equipment. Lots of fun with the Dremel.

I cut up and modified the stock bottle cover... I trimmed and reattached the bottom 2" of the cover with the rail on it directly to the bottle. I used a very strong 3m double sided automotive tape. It is attached very rigidly...that 3m tape is no joke. 

I separated and reshaped the rail attachment rings. I noticed all of them have some pretty sloppy fitment on the barrel shroud. On the inside of the mounts I wrapped short pieces of electric tape cut to width and length...this was a pain to get right and took a few tries. I got it so the rings were very snug and tight...I had to use silicone oil to get them over and down the barrel shroud. The rail seems much more rigid now but still not as good as a solid machined aluminum piece. 

Now the bipod attachment is totally isolated from the scope rail and barrel/shroud. I still have to test it but I can only assume the accuracy should improve. 


 
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Hey, Matt, you’ve been busy, lol. Just the fact that you isolated that barrel shroud from the bipod you’re ahead of the game. 

As soon as that bottle clamp comes in from the UK I’ll post pics of that. Just switching over to the bullmaster scope rail and getting rid of that bottle cover my groups greatly improved! I knew this gun could shoot, I just had to find the flaw-



that grouping at 32 yards, is truly a big deal for this gun, cause out of the box I was lucky to get a 4” group. Now it’s stacking pellets!
 
Nice! It's a bit chilly here with snow today but I might still have to get out and do some shooting. I like that color combo on your Bully!

Question regarding the Donny moderator... can the endcap of the existing barrel shroud be unscrewed and a Donny moderator simply added on? Basically, keeping the Hatsan quiet energy baffles in place and stacking on the additional moderator. This seems like it would be the most quiet setup. 
 
Matt, I don’t know if you were addressing me or Imold Jim. Yes, the end cap of the bully just unscrews, but you need to get one of his adapters. I would send you a link, but once you go on Donny’s site it’s self explanatory as he lists what the adapters are for as far as gun makes.

now, I have to tell you as part of a learning experience thru Imold and Donny, if your velocity is above 900 FPS get the Emperor model as Imold did. His is ultra quiet and he’s pushing the factory speeds. If under 900, get the Shogun or what other make Donny offers for a 30 cal. If you do order a Shogun, ask Donny to ream out the exit holes on his moderator to .357. Mine was pellet clipping with the standard hole so I had him enlarge it. Not a fault of Donny’s, but what Donny explained makes sense. It’s all about paying attention to tolerances and concentricity, and maybe mine didn’t come that way from the factory. 

im actually borderline at 870 FPS. Took me 12 whole turns counterclockwise on the hammer spring to drop it to that speed, and the sweet spot is at 2900 FPS, so I only fill to 3000. I’m good for at least 20 shots at that velocity. My Shogun did help some, but still a bit loud. I think even at 870 I should be bumping up to the Emperor. I swapped out the media that Donny uses inside his Shogun for a white styrophome wrap, the stuff plumbers wrap their riser pipes with before a concrete slab pour to protect their ABS pipes by adding cushion against the concrete. Helped big time in reducing the rapport. The other night I took out the factory bully baffles and wrapped them with the same material. Haven’t shot the gun yet to see, but I’ll let you all know for sure.
 
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Here’s an example. To clean out my barrel, I take the shroud off along with all the innards. Inside the shroud are two baffles and this plastic cup spacer. Mine was split. Only have shot about 600 pellets thru my gun, so how does this happen? You ought to check yours out to see if anything has happened to it. I have a replacement from Hatsan on the way.
 
Thanks for the info! I actually have removed that plastic cup from mine but kept the other baffles.

If I am shooting below 900fps (which I am with the heavy pellets) is there any reason NOT to get the emperor model? 

I did manage to get out to my shooting spot today and do some shooting. I'll post my groups later when I get some time to take pictures of the targets. Starting at 3400psi and ending at 1900psi, I shot 5 full magazines (5 groups of 14) at 50yds with JSB monsters (22 cal , 25grain).

All 5 groups of 14 ranged between 2" and 2.75". Unfortunately, I overdid it on the coffee and skipped breakfast so I could not get rid of the shakes! Because I was so shaky I don't feel like I could determine if I had improver the guns accuracy. Considering that though I think I did ok...this week I am going to replicate, but instead have a beer first! I also want to try with barracuda power pellets because those shoot really good in my bully.

Also I did a little experiment... my bully shoots the cheap crosman pellets at supersonic speeds...they are just too light and not accurate in the bully. I wondered, what if I shot two pellets per shot? So, I shot a whole magazine of them that way...seven shots, with two pellets per shot. I was quite surprised. The pellets did not spread out at all. I had expected them to spread out and be very inaccurate. The overall group was not that great...2.8" spread at 50yds... but each pair of pellets went through the exact same hole very cleanly. I tried it a gain at 75yds, got a 4.4" group, but still each pair of pellets cut a clean hole. I'll post pics later 
 
I have a Hatsan Bully in 45cal . I cannot believe this gun was designed by anyone who knows anything about guns and scopes. I see you are attempting to isolate the movement of your scope by disconnecting the scope rail from the front two rail screws that hold the bottle cover. I followed your lead and disconnected from those also, only then I noticed the third mount from the front is not solidly mounted and also allows the rail to move back and forth only stiffened by the only solid screw attached to the rail, the back screw which is too darn small to hold anything. Have you succeeded in getting any better accuracy from your gun with the mods you made? I am thinking a ring that firmly clamps to the barrel and attaches to the rail in the third screw position would fix this gun. I think Hatsan was in a hurry to satisfy customers that think the Hercules is too heavy and failed to thoroughly check out the new design.