.22 or .25 vulcan
History:
I currently have a .22 pcp that shoots 14.3 gr at 950 fps (~29 ft lbs). It has been great for petting, plinking and paper. This power level would probably always meet my needs BUT, who doesn’t like power?
Fast forward:
I REALLY want a Vulcan and can’t decide on another 22 or a 25. I know Tony is out of 25s so if I’d have to wait on the next shipment. I assume more power would provide a flatter trajectory. However, power comes at a cost of noise. My current pcp is extremely quiet and my next would need to be the same or less. Looking at the threads here, it seems the 25 vulcan is pushing a 25 gr pellet at about 920 – 940 fps giving 47 – 49 ft lbs and even with the new moderator users indicate it isn’t quiet. What if it was adjusted down to around 850 fps making it about 40 ft lbs? I’m sure that would lessen the report – correct? And at 40 ft lbs it would still provide a rather flat trajectory?
Am I correct that power can be adjusted by adjusting the hammer spring? If so, is this done while the action is still in the stock? Should I ever need more power, I could always turn it back up – not like adjusting daily or weekly but if I had the opportunity to pest outside my neighborhood it would be possible to increase power. And doesn’t power also provide longer range shooting?
Currently pesting to about 80 yards with my 22, paper at about 30.
Which should I go with?
Which caliber did you get and why?
All Replies
Viewing 14 replies - 1 through 14 (of 14 total)
Ok, I’ve seen the video showing how to remove the regulator so I know where it is. However, how does one take the gun apart and adjust the regulator such that they get the desired fps when finished with the adjustment? And if the hammer spring must also be adjusted, how does one know where to set that? Is it, take apart, randomly adjust reg, put together, test, adjust hammer spring and if not where desired start the process over? That’s too much work for me.
Although I’ve been looking for shooting areas outside of the neighborhood, I haven’t been successful. So I need the gun to be neighborhood friendly.
What are the db’s for each caliber? Has anyone measured them with the new moderators on both?
.22 caliber Vulcan is back yard friendly you don’t need to mess with the hammer tension spring or the regulator. I live in NY and one of my biggest concerns is sound report. I am fine shooting my .22 Vulcan in the back yard all day long. There are many ways to keep your gun back yard friendly one is having your pellet trap filled with rubber mulch or duct seal look it up it quiets the sound of the pellet hitting the target if you tape a paper target to a piece of wood you will get a heavy duty thud far far far less of this noise with duct seal or rubber mulch. You can also tune down your gun. You can send it to a tuner like Earnest in NJ if you really want to make it quiet. Most of my noise is from the trap and the twang I hear when firing no one else hears this but you. Buy a .22 it sounds like that Vulcan will meet your needs the .25 is a tad louder because of the increased air coming out the barrel to push that heavy pellet down range.
BTW I found what may be an undocumented set screw halfway back on the moderator. Don’t start twisting until you are sure.
I got rid of 250 or so pellets on Saturday in difficult shooting conditions and managed to nail a bunch of birds non the less. But I was a bit phased. So I decided to do some home brew bench rest shooting from roof of truck in some windbreak and what I found was the wind got the best of me and gun just is blazing accurate. Later on on a different spot I was able to do 1″ groups in the wind all lining up horizontally just playing back and forth as the wind blew. Just phenomenal. I’ll try to mount camera and do a one holer at 45 yards
My current 22 is too heavy for me to shoot off hand. I have to use a bipod or some sort of rest (gun on arm with arm against fence, tree, wall, etc) because my arms get tired and unsteady. I’ve had surgery on both shoulders and I assume that is why I’m having difficulty off hand. I’ve just started shooting air rifles again about 2 years ago and had really only shot them in my youth. Before 2 years ago I haven’t shot a rifle in over 25 years although I own several PBs. I shot the vulcan freehand at the Arkansas airgun show back in April. While I only took 4 or 5 shots, I was able to hit flowers at 20 – 25 yards. With the weight of the gun, balance (i.e. no weight hanging far out) and some practice, I’m sure I could do better.
Ok, I’ve seen the video showing how to remove the regulator so I know where it is. However, how does one take the gun apart and adjust the regulator such that they get the desired fps when finished with the adjustment? And if the hammer spring must also be adjusted, how does one know where to set that? Is it, take apart, randomly adjust reg, put together, test, adjust hammer spring and if not where desired start the process over? That’s too much work for me.
Although I’ve been looking for shooting areas outside of the neighborhood, I haven’t been successful. So I need the gun to be neighborhood friendly.
What are the db’s for each caliber? Has anyone measured them with the new moderators on both?
I just got my .22 Vulcan a couple days ago so what do I know? Just a little!
The Vulcan is REGULATED that is internally adjustable and there are adjustments for the hammer spring also. The key ingredient is that the hammer is pretty much facorty set for overall consistency. I don’t think we should screw with the hammer as we often do on none regulated PCPs. If you care to change the power factor I would suggest learning how to get inside the air tank to adjust the regulator.
You have a .22 that you are getting good use out of and the louder vulcan .25 would not replace it. Therefore you would not gain usefullness by buying either a .22 or .25 Vulcan at this time. But, if I were you I would buy the .25 Vulcan and expand your horizons. You will immediately love the Smack Down game taking qualities of the .25 Vulcan and gladly drive out of your neighborhood to enjoy it and as you have with your .22 you will find uses for it. I expect that because of the Vulcan quality and ergonomics you will soon be planning to replace your useful but old technology .22 with a .22 Vulcan.
Lurker your pretty much spot on. The Vulcan is no different to tune than any other regulated gun. There is a lot of information on tuning in the cricket and edgun section
eelect how is that gun treating you?
I just got my .22 Vulcan a couple days ago so what do I know? Just a little!
The Vulcan is REGULATED that is internally adjustable and there are adjustments for the hammer spring also. The key ingredient is that the hammer is pretty much facorty set for overall consistency. I don’t think we should screw with the hammer as we often do on none regulated PCPs. If you care to change the power factor I would suggest learning how to get inside the air tank to adjust the regulator.
You have a .22 that you are getting good use out of and the louder vulcan .25 would not replace it. Therefore you would not gain usefullness by buying either a .22 or .25 Vulcan at this time. But, if I were you I would buy the .25 Vulcan and expand your horizons. You will immediately love the Smack Down game taking qualities of the .25 Vulcan and gladly drive out of your neighborhood to enjoy it and as you have with your .22 you will find uses for it. I expect that because of the Vulcan quality and ergonomics you will soon be planning to replace your useful but old technology .22 with a .22 Vulcan.
Lurker your pretty much spot on. The Vulcan is no different to tune than any other regulated gun. There is a lot of information on tuning in the cricket and edgun section
Most guys need to decide themselves what works for them and their situation. If you have any doubt about vulcans fear not. They are pretty much everything you hear about. Not too much bad stuff coming from reviews. I absolutely love my 25 from Tony
I’m only guessing but hear me out. Or someone please correct me.
I just got my .22 Vulcan a couple days ago so what do I know? Just a little!
The Vulcan is REGULATED that is internally adjustable and there are adjustments for the hammer spring also. The key ingredient is that the hammer is pretty much facorty set for overall consistency. I don’t think we should screw with the hammer as we often do on none regulated PCPs. If you care to change the power factor I would suggest learning how to get inside the air tank to adjust the regulator.
You have a .22 that you are getting good use out of and the louder vulcan .25 would not replace it. Therefore you would not gain usefullness by buying either a .22 or .25 Vulcan at this time. But, if I were you I would buy the .25 Vulcan and expand your horizons. You will immediately love the Smack Down game taking qualities of the .25 Vulcan and gladly drive out of your neighborhood to enjoy it and as you have with your .22 you will find uses for it. I expect that because of the Vulcan quality and ergonomics you will soon be planning to replace your useful but old technology .22 with a .22 Vulcan.
So why doesn’t just adjusting the hammer spring adjust power. Can you elaborate on how they are all interrelated/work?
You can adjust power via the hammer spring as stated previously, but you are highly likely to get a large variance in velocity from pellet to pellet. The reason is because when you only adjust the hammer spring you alter its tension/impact strength, which has been optimally set for a given regulator output (for example in this case, the output set from the factory). The same also goes for the valve spring tension. All components have to be set optimally to attain the consistent desired velocity.
Say, if the regulator output has been set from the factory to shoot pellets at 900 FPS, and you decrease the hammer spring tension only, velocities might look like this (large variance): 880, 870, 885, 900, 860, 850… Whereas if it weren’t changed the velocities will look like this, which has a tighter spread: 900, 899, 898, 900, 897, 899…
For lack of a better analogy, just like in a car, the more power an engine puts out the more rigid its chassis has to be to accommodate the extra stress. Otherwise, the car’s handling is going to be compromised and will perform unpredictably.
You may have to adjust the RS with the HS that’s all he is tellin you.
So why doesn’t just adjusting the hammer spring adjust power. Can you elaborate on how they are all interrelated/work?
I currently have a .22 pcp that shoots 14.3 gr at 950 fps (~29 ft lbs). It has been great for petting, plinking and paper. This power level would probably always meet my needs BUT, who doesn’t like power?
Fast forward:
I REALLY want a Vulcan and can’t decide on another 22 or a 25. I know Tony is out of 25s so if I’d have to wait on the next shipment. I assume more power would provide a flatter trajectory. However, power comes at a cost of noise. My current pcp is extremely quiet and my next would need to be the same or less. Looking at the threads here, it seems the 25 vulcan is pushing a 25 gr pellet at about 920 – 940 fps giving 47 – 49 ft lbs and even with the new moderator users indicate it isn’t quiet. What if it was adjusted down to around 850 fps making it about 40 ft lbs? I’m sure that would lessen the report – correct? And at 40 ft lbs it would still provide a rather flat trajectory?
Am I correct that power can be adjusted by adjusting the hammer spring? If so, is this done while the action is still in the stock? Should I ever need more power, I could always turn it back up – not like adjusting daily or weekly but if I had the opportunity to pest outside my neighborhood it would be possible to increase power. And doesn’t power also provide longer range shooting?
Currently pesting to about 80 yards with my 22, paper at about 30.
Which should I go with?
Which caliber did you get and why?
There is a .25 caliber left at TT the last I heard. Call Tony fast before it goes he did not have much of anything left.
Power can be adjusted by the hammer spring, but almost always, you’re not going to be getting consistent shots. Because the Vulcan is regulated, you’ll have to also adjust the regulator, valve spring, and hammer spring to get to the power you want consistently until the regulator falls off from working pressure. Lesser velocity usually results in less noise as well.
Viewing 14 replies - 1 through 14 (of 14 total)
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Yes, I’m not worried about the pellet hitting sound, it is the report of the rifle I’m concerned with. I’m usually just pesting at home. My friend has a duct seal backstop and the pellet hitting it is louder than the report of my 22. As I said above, it is shooting 14.2 gr pellets at 950 fps. I’m sure the 25 would be the same (pellet hitting louder than report
) since it will be throwing heavier lead at about the same speed but I need the report to be about what I have now. Perhaps a little louder would be ok too.
Not sure how many dB’s my gun puts out.