Europe uses a 5 dbA doubling rate, here in the US we use the 3 dbA doubling rate. dbA is frequency based and measures freq. up to 1k HZ. The B and C scales measure lower freq and could help to account for the perceived differences. You are measuring "impact" noise not continuous (background) sound pressure levels. Good comparison and research. Thanks for the additional info. Great job crafting the stocks. You do excellent work!
Talk about some thorough testing! WOW! Speaking of WOW, That stock is beautiful man, great job. I will give you one tip that will substantially change the attenuation capability as well as better pressure management. The Diffuser that I suggest in my videos is a melamine foam which simply a very tiny hole or porous sponge. The styrofoam you are using does not breath. No air will pass through that stuff. You are essentially plugging the end of the shroud. The Mr. Clean Magic eraser allows air to flow through at a controlled rate, therefore the barrel shroud has more capacity. Extreme awesome production quality in your video and thanks for trying out my Strip Stak Pak 😁
Love the head banging during the fast forward during the mic testing 🎯. Great informational video as usual. Keep it em coming. Ps I love my .22 Nova thanks to your initial review. Cheers
The the quest for the perfect stock begins lol. I have 25 stocks in various corners of my home. I am left handed and never satisfied. Your doing a fantastic job in my opinion, it can be incredibly rewarding.
jim stewart: I want a wood stock for my Prod? Any suggestions. I sure as hell am not going to put in the work AVS did to make my own. Anyway his stocks are beautiful.
Thank you for taking the time and effort to make this video. I am hoping to be able to buy an FAC version in the UK so every piece of advice you give is being listened to intently. It is called the Nova Vista Alpha HP900W (in wood stock) here. OH and Steve at AEAC with the Gauntlet? In my opinion..... not a patch on your weapons.
the stripper pulls the air away prior to exiting the barrel so the skirts are not being pushed upon exit. Trying my best to avoid comments that involve a stripper, skirt, and blowing. But the whole reason to use an air stripper is to reduce the push on the skirt so the pellet flies straight.
That's an awesome stock you made... i STILL think somebody needs to make a bullpup stock for the Nova freedom! You'll make a freakin fortune, even if this stock is plastic....
The Benjamin Marauder seems like a waste of time, compared to this gun, but I really want to get the Aspen Seneca in .25 these guns just work right out of the box, and with a little tunning these perform far better than the Marauder, the Gauntlet is really impressive as well.
Yes, the liberty or the freedom (Aspen senca is the same gun as freedom) are great choices with little to no adjustment. My liberty out of the box was amazing. it took 5 minutes to shim the hammer spring and a quarter turn counter clock wise my gun was a 100 yard shooter. The Guantlet on the other hand is not as good as the liberty by far. The Guantlet uses a small bottle which can not be regulated above 1500 psi as the low side burst disc will blow well below 18k psi burst disc. (you can change the bottle but that will make it even more cumbersome to handle). Akward stock with cheap bottle cover, bolt cocking is terrible needs alot of work and even then it will eventually lock up if you do not constantly clean and lube it. I returned my Guantlet after a few weeks. I own 3 Liberties and I love them all.
I do like Haji but for me I like my rifles super quiet and 104 106 decibels a little to loud, there is other things out there that will work better. Thank you and keep up the good work.
Great video . I've been following you with your Liberty as well as the Jumbo . I ordered the Liberty today as an addition to my addiction . Looking forward to more on the Liberty . Quick question .. How has the Jumbo been holding up and in your honest opinion ... would you recommend buying it ?
Wow. It actually increased the velocity? I usually test my moderators with alloy pellets at night, just to get that extra noise going....That stock is sweet too man. Excellent video.
Hi Steve. I finally got my Nova thanks to your videos I made up my mind. Could you please let me know what is the type and sizes of the screws that you replaced on the trigger. I wanna do the same mod that you did. Thanks
Hey bud going to purchase some slugs for my nova liberty what grain boattail versus non-boat tail do you think your gun prefers or what would you recommend me going with it thanks again for all your help
Hey Jeff, I just bought some 23 grain slugs but I haven't had a chance to really test them extensively. I'm going to be making both .22 and .25 caliber slugs next month. I'm going to be trying various weights and designs. Im hoping that skirted slugs at a weight of 22 grains are going to be good. I'm going to have to find the correct velocity for the novas twist rate. In short, I don't want to recommend a slug that I'm not 100% sure works well.
Air Velocity Sport Thanks brother for all you do for us and our family I’ll be waiting to see what you come up with I would say by far the barracuda 5.53 heads work the best and my liberty at this point
How is the slugs making going? I ready to order! Lol . One thing though no but liberty is still shooting great made the Tiger lol adjustment . Let me ask u a question I don’t know because I don’t have a crony. But u Think it’s the magazines wearing out talking about the Benjamin marauder style. Because i’m getting some pretty wild inconsistencies through my 10 round magazine but not all 10 rounds 4 to 6 will go one way and then drop another what do you think nova brother from another mother
looks like the accura y did not improve to much with the stripper on, the issue is propably increased velocity. its propably not the stripper itself wich is the issue.18,13 gr Jsb dont like speeds more than 860 ish, so tuned down to optimum velocity the stripper propably doing fine. i tok my velocity down from 920ish to 860 ish and groups reduced from 2 inch to 1 inch - ish groups. thanks for a great show and greetongs from fx country, sweden
Your LDC decreased the distance by 10-15% closer to your decimeter. Your numbers with the LDC might have been lower if you moved the decimeter back the length of your LDC to make it apples to apples.
Legally, if it can be installed on a firearm and used one time and it reduces the sound, they can run you. I make them out of materials that would fall apart on a gun and bond it to the barrel with JB WELD.. Better safe than sorry.
Seems to be a lot of dead air space between the end of barrel and end of shroud. Can’t the shroud be cut off at breech end to allow for a screw on moderator. Now your only talking about adding two inches not seven to the overall length.
Yes, there is about 5 or 6 inches of dead space in front of the barrel but it actually does a fairly good job. More importantly you can only cut the shroud down about 2 inches and add a 1/2 unf thread or other thread because the air tube is only 2 inches shorter the the shroud. I cut one of mine down 3 inches now I can only thread on a 1" diameter moderator. Anything larger will on screw on as it will hit the air tube. The shroud and air tube are very close together.
Air Velocity Sport so at least we were thinking along the same lines. It’s a great vid, your doing good work. Don’t know your profession is but you can add gun stock manufacturer to it, cause that is a work of art.
What is the my brother with the nova from another mother is trying to say is Dr. H we love you but it is not worth the time and effort by a Dl suppressor and be done with it
those "suppressors" could use a little science to muffle the sound. 3db is virtually indistinguishable by human. The proper designed suppressor must have the stacks shorter than the length of the projectile.
Not true, if they are drilled tight enough. I built a device for a Benjamin Maximus.22 ( way too loud) with the 6 stack distances running between 5/8"" and 1 1/8" and it was ridiculous quiet. There important thing is that the stack distances must increase towards the exit, and they cannot be even increments bigger or doubled. Even stacks will set up a harmonic that is loud, and for some reason, seems to ramp up ping.
Europe uses a 5 dbA doubling rate, here in the US we use the 3 dbA doubling rate. dbA is frequency based and measures freq. up to 1k HZ. The B and C scales measure lower freq and could help to account for the perceived differences. You are measuring "impact" noise not continuous (background) sound pressure levels. Good comparison and research. Thanks for the additional info. Great job crafting the stocks. You do excellent work!
Talk about some thorough testing! WOW! Speaking of WOW, That stock is beautiful man, great job. I will give you one tip that will substantially change the attenuation capability as well as better pressure management. The Diffuser that I suggest in my videos is a melamine foam which simply a very tiny hole or porous sponge. The styrofoam you are using does not breath. No air will pass through that stuff. You are essentially plugging the end of the shroud. The Mr. Clean Magic eraser allows air to flow through at a controlled rate, therefore the barrel shroud has more capacity.
Extreme awesome production quality in your video and thanks for trying out my Strip Stak Pak 😁
Thanks Haji, I will try the Mr clean magic eraser.
Sweet product Haji
Love the head banging during the fast forward during the mic testing 🎯. Great informational video as usual. Keep it em coming. Ps I love my .22 Nova thanks to your initial review. Cheers
Great video . Man what a stock every time I watch your videos I'm more impressed. Your Fab skills are awesome.
The the quest for the perfect stock begins lol. I have 25 stocks in various corners of my home. I am left handed and never satisfied. Your doing a fantastic job in my opinion, it can be incredibly rewarding.
jim stewart: I want a wood stock for my Prod? Any suggestions. I sure as hell am not going to put in the work AVS did to make my own. Anyway his stocks are beautiful.
Thanks for all the time and effort you put into the review. I suggest shooting outdoors. Great job.
Lovely looking stock!!!!
Thank you for taking the time and effort to make this video. I am hoping to be able to buy an FAC version in the UK so every piece of advice you give is being listened to intently. It is called the Nova Vista Alpha HP900W (in wood stock) here. OH and Steve at AEAC with the Gauntlet? In my opinion..... not a patch on your weapons.
Realy liked your video👍👍👍👍
A lowering of tone is worth more to the hunter than an outright db change.
thanks for the video.
Sweet stock!!!!
I bought a 9 baffle Wolf And it is MUCH better than my Hugett Belitta. They are impressive and well priced. Great review by the way.
the stripper pulls the air away prior to exiting the barrel so the skirts are not being pushed upon exit. Trying my best to avoid comments that involve a stripper, skirt, and blowing. But the whole reason to use an air stripper is to reduce the push on the skirt so the pellet flies straight.
That's an awesome stock you made... i STILL think somebody needs to make a bullpup stock for the Nova freedom! You'll make a freakin fortune, even if this stock is plastic....
The Benjamin Marauder seems like a waste of time, compared to this gun, but I really want to get the Aspen Seneca in .25 these guns just work right out of the box, and with a little tunning these perform far better than the Marauder, the Gauntlet is really impressive as well.
Yes, the liberty or the freedom (Aspen senca is the same gun as freedom) are great choices with little to no adjustment. My liberty out of the box was amazing. it took 5 minutes to shim the hammer spring and a quarter turn counter clock wise my gun was a 100 yard shooter. The Guantlet on the other hand is not as good as the liberty by far. The Guantlet uses a small bottle which can not be regulated above 1500 psi as the low side burst disc will blow well below 18k psi burst disc. (you can change the bottle but that will make it even more cumbersome to handle). Akward stock with cheap bottle cover, bolt cocking is terrible needs alot of work and even then it will eventually lock up if you do not constantly clean and lube it. I returned my Guantlet after a few weeks. I own 3 Liberties and I love them all.
I do like Haji but for me I like my rifles super quiet and 104 106 decibels a little to loud, there is other things out there that will work better.
Thank you and keep up the good work.
Great video . I've been following you with your Liberty as well as the Jumbo . I ordered the Liberty today as an addition to my addiction .
Looking forward to more on the Liberty . Quick question .. How has the Jumbo been holding up and
in your honest opinion ... would you recommend buying it ?
Wow. It actually increased the velocity? I usually test my moderators with alloy pellets at night, just to get that extra noise going....That stock is sweet too man. Excellent video.
If the bore on the baffles is tight and concentric, it will also tighten up your groups. It may move your point of impact.
What type of silacone do you use on your rubber seals. And awsome video very helpful
Hi Steve. I finally got my Nova thanks to your videos I made up my mind. Could you please let me know what is the type and sizes of the screws that you replaced on the trigger. I wanna do the same mod that you did. Thanks
how about with the air stripper AND the moderator on? Gotta test that too
Hey bud going to purchase some slugs for my nova liberty what grain boattail versus non-boat tail do you think your gun prefers or what would you recommend me going with it thanks again for all your help
Hey Jeff, I just bought some 23 grain slugs but I haven't had a chance to really test them extensively. I'm going to be making both .22 and .25 caliber slugs next month. I'm going to be trying various weights and designs. Im hoping that skirted slugs at a weight of 22 grains are going to be good. I'm going to have to find the correct velocity for the novas twist rate. In short, I don't want to recommend a slug that I'm not 100% sure works well.
Air Velocity Sport Thanks brother for all you do for us and our family I’ll be waiting to see what you come up with I would say by far the barracuda 5.53 heads work the best and my liberty at this point
How is the slugs making going? I ready to order! Lol . One thing though no but liberty is still shooting great made the Tiger lol adjustment . Let me ask u a question I don’t know because I don’t have a crony. But u Think it’s the magazines wearing out talking about the Benjamin marauder style. Because i’m getting some pretty wild inconsistencies through my 10 round magazine but not all 10 rounds 4 to 6 will go one way and then drop another what do you think nova brother from another mother
wouldnt it be nice while shroud is off ,you could use it as an arrow shooter ? i guess could make some to fit ! arrow has to slide over barrel !
Good air stripper reduce the drag behind the pellets!! Not all manufactures be able to create those results !!!!
looks like the accura y did not improve to much with the stripper on, the issue is propably increased velocity. its propably not the stripper itself wich is the issue.18,13 gr Jsb dont like speeds more than 860 ish, so tuned down to optimum velocity the stripper propably doing fine. i tok my velocity down from 920ish to 860 ish and groups reduced from 2 inch to 1 inch - ish groups. thanks for a great show and greetongs from fx country, sweden
I have seen other video's you have on U tube. Where is your range? We live in NJ
Out on the east end long island. About 90 miles from outer Bridge Crossing or Bayonne Bridges.
Hi Air Velocity, I live in Nassau County, Long Island. Can you suggest any out door shooting ranch in my area ?
Will that stripper work for my air venturi Avenger?
I do not think so but Haji has one for the avenger
Your LDC decreased the distance by 10-15% closer to your decimeter. Your numbers with the LDC might have been lower if you moved the decimeter back the length of your LDC to make it apples to apples.
Yes, good point.
What is the legal opinion with these suppressors that can be screwed onto any gun instead of permanently affixed to an air rifle?
I think a firearm would blow the tires off an airgun suppressor. I think that's why they seem to be legal with no hassle. No expert here.
Legally, if it can be installed on a firearm and used one time and it reduces the sound, they can run you. I make them out of materials that would fall apart on a gun and bond it to the barrel with JB WELD.. Better safe than sorry.
How do I get my hands on the air stripper ?
Contact Hajimoto production s directly on thier channel
Seems to be a lot of dead air space between the end of barrel and end of shroud. Can’t the shroud be cut off at breech end to allow for a screw on moderator. Now your only talking about adding two inches not seven to the overall length.
Yes, there is about 5 or 6 inches of dead space in front of the barrel but it actually does a fairly good job. More importantly you can only cut the shroud down about 2 inches and add a 1/2 unf thread or other thread because the air tube is only 2 inches shorter the the shroud. I cut one of mine down 3 inches now I can only thread on a 1" diameter moderator. Anything larger will on screw on as it will hit the air tube. The shroud and air tube are very close together.
Air Velocity Sport so at least we were thinking along the same lines. It’s a great vid, your doing good work. Don’t know your profession is but you can add gun stock manufacturer to it, cause that is a work of art.
What is the my brother with the nova from another mother is trying to say is Dr. H we love you but it is not worth the time and effort by a Dl suppressor and be done with it
Donny L Suppressors
Listen anybody with the novaGet a Donnie else suppressor and be done with it I won’t with the sumo
Same here. lol
Mr Haji can stop selling his air stripper, and start selling his power increase device overnight.
opps, should have cut the video at 23mins.
890 fps without hajimoto air stripper to 960 and 950 fps???
I think you grabbed lighter 15 gr pellets by accident
No, you would think. But I'm very careful
@@AirVelocitySport I'm a fan of yours. The one response said the distance to chrony changed??
Not enough to be satistically significant and does not change the outcome.
those "suppressors" could use a little science to muffle the sound. 3db is virtually indistinguishable by human. The proper designed suppressor must have the stacks shorter than the length of the projectile.
Not true, if they are drilled tight enough. I built a device for a Benjamin Maximus.22 ( way too loud) with the 6 stack distances running between 5/8"" and 1 1/8" and it was ridiculous quiet. There important thing is that the stack distances must increase towards the exit, and they cannot be even increments bigger or doubled. Even stacks will set up a harmonic that is loud, and for some reason, seems to ramp up ping.