Benjamin Bulldog Transfer Port Power Modding
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- Опубліковано 11 жов 2024
- This is the 4th video in the "how to" series for the Benjamin Bulldog.
In this video we skip the unboxing that we saw in part 1, the tear down which you can find here.
• Benjamin Bulldog .357 ...
We also skip part 2. The complete tear down. Which can be found here.
• How to Disassemble a B...
Part 3 was the Trigger tuning and can be found here.
• Bulldog Trigger Tuning
In this video we pick up with drilling out the valve and barrel to be the same size as the transfer port with the guide removed.
If you have any questions or comments please leave leave them in the comment section below.
Very Cool... Thanks Mr.Matt... Glad that youre still keeping the Videos and Info. Coming Along.
Thank you sir, We are trying. Luckily Paul "Airgun Reporter/American Airgunner" Capello is here to help and he's doing a great job of taking the load off of me so that we can have some fun and make these videos again.
@@pitbull_airguns paul is an icon.
@@markmtbrider I agree, Paul Capello is a legend. It's an absolute honor to have him running the shop.
Yes i finally did mine and was amazed Thanks for such gteat videos .Its all pitbull complete and so much more power
Yeah, I dig on my new modification done by PITBULL.
Just the right amount of bite, nothing more nothing less. Mat you ROCK. I’m just now able to
Get out and put her to the test and see for myself what this MOD has done. I’m throughly impressed by the work done there at PITBULL’S SHOP.
ACCURATE, my Pitbull is more than I’ve expected & THANK YOU all for your hard work.
⚔️🧂🇺🇸🗽🇺🇸🧂⚔️
Simply outstanding!💥👍👍👍👍👍
Nice video ,now i am getting the idea about why you all do this for more power an the such ,cant wait to get mine out to you for this uprade ,as well as knowing the rifle is well put together ,or back together,wow nice to know how much one can do to these rifles too ,
Hay Matt great video, I would love to see a install video for the 3D printed depinger if you could. Thanks.
That is definitely on the list.
Nice work great video I don't even have this gun I do have an air bow though that's why I'm here
Great video watched it a dozen times so i can do mine Thanks alots
You're very welcome
Did you ever do yours yourself?
Yes and workes great Thank you
Interesting information. Thanks. Can you do a pre and post mod chrony test please? Also, instead of making the hammer spring stiffer - how about softening the valve spring? - just a thought
We will get a video on that very soon. As for the valve spring, can completely leave the valve spring out if you want. You have to make sure that the gun is standing barrel up and the gun cocked to make it fill from 0 pressure. But as long as you don't ever let it go empty it fills like normal. That tends to give you around 20 to 25 fps
@@pitbull_airguns not sure if the valve will be able to return back quickly after each shot, alternatively there would be excess dumping of air without the valve return spring. Did you take off the valve return spring in this to achieve the 240-300 Ft Lb you mentioned? Because you did not mention about the valve spring in the video.
I've reached 240 to 270 without removing the spring but to get to that 300+ mark then yes it would need to be removed. Sorry didn't mention it in this video but i have mentioned it in one of my other ones.
@@pitbull_airguns all I need is 260, ish....lol
Ok, did I miss the part where you showed what you replaced that little plastic air guide going between the port on the barrel and the valve???
No sir. We leave that piece out and don't replace it with anything.
@@pitbull_airguns here's all I know for sure, you guys do awesome jobs on those Bulldogs. When I can afford it I'm going to buy one of those moderators you got
@@pitbull_airguns and that was the answer i was looking for!
Me too. So just to be sure, transfer port is not needed?
Hey big guy, great job but I have an unrelated question about the bulldog as well as other air guns.. has anyone hydro dipped them and if so are there vids on them? I have an airbow and want to hydro dip it…
Hey guys, I love your work. just a quick question for drilling the barrel and drilling the transfer sleeve, do you take an 8mm drill or 0.314 inch?
Make a T handle for the cocking lever
I have nothing but respect for your machine work. But what was the holdback, or cost that kept crossman from producing it in this form? Just shot count? C.o.m.? Or liability?
Another great video. I'm wondering if the increased energy is affecting accuracy for the various bullets.
Yes.. it will without a doubt. That’s the problem with mods on guns like this. It will change everything. It wouldn’t be a problem if you had a externally adjustable regulator. Then you could dial your regulator and hammer spring in and get the gun shooting well.
If you want to see what I’m talking about. Watch videos on guys tuning their FX impact m3.
Hello how are you, only three shots hit the original tank doing the reform or give more shots with less power
Would have been nice to see the outcome.
Matt, I need some clarification... Are you using an M-size drill bit (.2950 in.) or N-size drill bit (.3020 in.)? You mention both sizes in the video, and clarified with a confirmation of M-size. However, in one of the comments, you state that the final size is .3020 (N-size). Please help me understand. Thanks.
N size for transfer ports
Yeah. What Paul said. N SIZE.
Is there supposed to be a Grubb screw underneath the fastener that holds the shroud On. When you slide the shroud off there's two holes the front hole I'm the back hole. The front one holds the shroud the back one is what holds the barrel in place. At least that's how I think it's supposed to be but mine has. A? Gross crew in. The front hole Also. You might remember me from a while back you printed me out some benjamin bulldog single shot trace and Some for my. Ataman 357.
Most only have a grub or setscrew in one of those holes. It's only purpose is to hold the aluminum block to the barrel.
@Pitbull Airguns I get what you're saying the Fastener that holds the shroud Should. not have a grub screw underneath it. The rear one Holds the barrel to the block... Sorry to bother you with this i'm just not sure which one to remove.
I just got my bulldog, word is they are sold out at the normal places. Might be alot of action coming your way soon.
We've been covered up for 6 months now.
@@pitbull_airguns that's good, right? I think my number is 260 fpe to get the nsa 142gr moving over 900 fps. I hope that gets me out to 200 yards with enough accuracy for a coke can kill. Is that reasonable or expecting too much from the bulldog? I plan to use your barrel shims and the mega or long moderator.
@@markmtbrider yes sir, it's definitely a good thing.
A coke can at 200 is definitely doable but probably not every shot. The more time you spend behind the trigger is going to increase your chances and your accuracy. But to start with I would plan on seeing grapefruit accuracy then work towards the coke can size.
Any reason why you kept the valve in the reciever while drilling? Couldn't you just take the valve out and drill it without risking damaging the receiver?
We keep it in there to make sure that the port lines up perfectly inside. The factory port doesn't always line up correctly.
I'm not understanding the math here. If you start with a 7mm hole and increase it by 50 percent that equals more that the bullet . .302 " = 85 percent of the bullet size.
I must have misspoke somewhere. .302" is the final size that we typically use.
Ahh i see the misunderstanding. i said #7 not 7mm
Anything I can do for accuracy??? Thanx I appreciate your work.
Tuning is a big deal. You might also try barrel supports.
Custom rifled barrel for slugs and barrel supports. Adding a regulator would help with consistency a lot
@@pitbull_airguns could I drill it out just using a handheld drill?
Nice video bro...can you increase the performance of a Winchester 45 cal ???
Yes sir
What are your prices on air gun modifications????
@@smittyb9418 that's more than I'm willing to type out. Give us a call and tell Paul what your want done and he can give you pricing.
@@pitbull_airguns ok thx👍
I did mine .Where can I find the larger plastic sleeve to replace the smaller one I removed Thanks
In the comment above yours he said they don't replace it with anything, just leave it out
@@cc23001 Yes the plastic sleeve you leave out. I didnt put anything in place of it. Be careful it made mine lots louder even with the suppressor.Has plenty of power Good luck my friend
I don't understand the logic in that, can someone explain?
I enjoy ur videos. please send me the valve stem shaft length, exposed section. Have y'all experimented w longer shafts? Seems that would be more effective than a stiff hammer spring. 5/64 bit fits
How about the hole of reciever?
The hole in the reciever is already the size of the N size drill bit.
There is a small plastic bushing in there that reduces the size. You just need to take that out.
Me passa as medidas da válvula de disparo
Can you port a Semiautomatic platform 🤔
Every platform can be ported. Some benefit greatly from it and some don't. I'll be glad to look at it for you. What are you working on?
Helium? you can replace the air in a pcp with helium to get better performance
In a PCP air rifle, if you use Helium instead of Air it will normally double the foot pounds of energy.
You must have good seals and I've seen some guns that could not handle the extra power. But a bulldog can.
@@pitbull_airguns is it a higher pressure or Is it because helium is lighter than air
@@tylerferrell2959 it's because helium is a lighter and smaller molecule. Used at the same pressure it will flow around the valve faster and expand down the barrel faster.
Its costly...
@@pitbull_airguns wow. Where can I get 4500psi psi for the scuba tank? That sounds crazy.
Great video. Off topic question here, I let someone go shooting with my bulldog. And some how the got bullets jammed in the barrel.. How do I get the out?????
David Harrison Remove the plastic cheek pieces and then take out the barrel. You can now get out the jammed slugs
My Bulldog came with a plastic bore rod for pushing the bullet back out if it is stuck in the barrell. If the magzine is stuck in the gun, then find out if the slugs were too long and the magazine was forced in, ans the projectiles are preventing removal. At worst, the person shooting did not know that the magazine has a stopper that prevents closing the bolt when then magazine is empty and forced the cocking handle forward, piercing the stopper and preventing the bolt from retracting to remove the magazine.
hello again i got my bulldog fun rifle for sure love even the stock power ,i am getting my tank together an some other things electric pump ,i sent crossman an idea they said sounded good ,cant find anything on the net about it , ?? RUBBER bullets or pellets for the bulldog for say scaring off a bear an or home defence as well as a bird shot type ammo for ducks ,was something i was thinking about to ,i may bring it to forum ,thoughts on it anyone,i did read artical about it working out for some for home protection nothing on rubber bullets yet,though at the same time we dont wont anyone regulating them becouse of it either ,though i got a feeling the years to come with rifles like the hammer this one ,it may just be a matter of time,not that big a deal for most
I have seen self defense pistols that used rubber slugs for non-lethal croud control.
www.meisterbullets.com/AWSProducts/513-C-45-P-0/X-RING-Rubber-Bullet-38-CAL9MM
Give these a try and tell us what you think.
I know I'm a year late to reply but ran into a bear problem two months ago. I made a "rubber" bullet with a product called sugru from Amazon. Used 2000psi and was successful with a shot to the bear's back side. Didn't see it again for 3 weeks. Hope this helps...
Show me some ballistics.
How many shots would you guess you get per fill with all the mods vs a factory bulldog
I can do 3 good shots at about 260 to 270 FPE with the stock reservoir filled to 3000.
@@pitbull_airguns nice. Not very good when you're shooting for fun. But you only need 1 or 2 shots for hunting so 3 shots is perfect
So there are lots of different ways to build the bulldog you just asked about this one.
With a regulator and an extended res and a 4500 psi fill i can get 15 shots with a 128 gr devastator at around 200 FPE. I have a gun setup like that to use for varmit hunting. Now thats a fun night of hunting!
Oh wow. I may end up having to build mine out. More shots and more power... I'm definitely ok with that
Its a very versatile gun platform. But the most important thing is to make fit what you want so that you can have the most fun.