❓ How did you get your .30cal to be "backyard quiet"?

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JungleShooter

JungleShooter

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Sep 5, 2018
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Lima/PERU: 11,000,000people +twice as many pigeons
❓ How did you get your .30cal to be "backyard quiet"?

I really would like to know what I can expect from a .30cal noisewise — so far I only meddled with .177 and .22 (call me peashooter, I deserve it).


❓ Would you be so kind to share with me the details that got your .30cal gun to be "backyard quiet"?

Note, I don't mean "Marauder quiet" or "mousefart quiet". Just "backyard quiet".



🔸 Yes, I know, this is maddeningly subjective... — but what else do I have to go by (where I live I know of no-one that owns a .30cal).

🔸 To understand you correctly, I'd need a few specs from your .30cal "backyard quiet" setup, if you don't mind.
(You see,
▪ if you got your gun quiet shooting a 25gr at 500fps from a 700mm barrel with a DonnyFL Emperor —
well, that's quite different story than
▪ if you got it to shoot quietly a 34gr at 800fps from a 500mm barrel without silencer.)


•Gun =
•Pellet =
•Muzzle velocity =
•Silencer (if yes, which?) =
•Barrel length (if you know it) =


Thanks a lot for your help, you enablers...!

Matthias 😊
 
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From a pretty simpleminded physics perspective, I would guess you'd want approximately a silencer that's almost 1.5 times the cross-sectional diameter of whatever you consider to be a "good" .22 silencer to be, and roughly just scale-up the internals appropriately. I'm thinking about the relative volume of air you need to manage. So the "diameter magnifier" is about .3/0.2, i.e. 1.5. You could also make it longer, but I imagine long silencers get awkward.
 
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Backyard friendly is what your neighbors will tolerate. When a .30 start blasting it will get your attention. A lot depends on tune and power level. The aea hp max .30 still have a bark with the Ronin. I'm lucky to have space to shoot a .30 from my deck.
20220925_084229.jpg
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shambozzie said:
Backyard friendly is what your neighbors will tolerate. When a .30 start blasting it will get your attention. A lot depends on tune and power level. The aea hp max .30 still have a bark with the Ronin. I'm lucky to have space to shoot a .30 from my deck.View attachment 301098View attachment 301099
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The AEA HP MAX in .30 is a bit loud even with full on emperor... Or, at least, mine is, but it's tuned for nothing but power.

Still, it's ok for my back yard, but the neighbors are pretty cool.

My L2 .30 is crazy quiet... (Huma air 40mmx5)

I really need to get a chronograph....
 
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My FX Boss (.30) has a Donny Ronin. It's certainly tamed the bark but I wouldn't say backyard friendly. It's shooting JSB/FX 44.75 or 50gr at 850-870fps. The pellet weights you mentioned Matthias (25gr or 34gr) are NOT .30 but .25 cal. so I'm confused. My Royale 500 (.25) with the same Ronin is definitely backyard friendly.
 
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My Gauntlet 30 has no suppression built into the shroud as far as I can tell, with a solid end cap that fits over the muzzle of the barrel and threads into the shroud. It is very loud! The 30 Cal FX / Donny FL that comes with the FX Impact Sniper from the factory reduces it substantially but it still echoes off the hills in our subdivision and can be easily heard 500 yards away. I bought a Buck-Rail.com 30 cal 3d printed suppressor for $20 and it seems to work equally as well as the FX moderator with no change in accuracy. The 60 grain slug impact on my cardboard faced bullet trap is also pretty noticeable.

I may want to get a ginormous suppressor to quiet it down even more some day, but probably won't since I don't often shoot the 30 cal outdoors on my property and if I did need it for taking out a coyote menacing family pets, nobody would complain. I could even get away with using a 223 rifle for that if I kept it under 3 shots. What bugs the neighbors is the repeated whack whack whack for half an hour! For the 30 cals, there is a public land area about 10 minutes from my house where I can shoot out to about 300 yards with no need for a suppressor.

N2 Shooter said:
I run my FX Maverick VP .30 cal in residential areas quiet often. I have the 600mm barrel and the DonnyFL Ronin suppressor. My airgun is tuned at 930 fps at Power Wheel 7, and I think it's like 775 at Power Wheel 1. The loudest sound by far, is the round hitting the target, especially if that target is living! I have not figured out how to silence that down yet.
Click to expand...

You could try a playing a recording of a big dog barking REALLY loudly or a car horn sound, triggered by the muzzle report on a sound sensing switch to mask the impact! ( I should patent this.)
 
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Even if you make the shot quiet the impact on a squirrel is very loud. My 132fpe (66gn@948) impact was as quiet as the average .22 but the sound of the slug hitting a squirrel was like hitting a large wet pillow as hard as you can with a boat paddle. Anyone within 100 yards would hear it. Probably 200 yards.
I made it quiet with the fx empty can type moderator using 2 center sections and 7 3d printed baffles. The Impact was not making 132fpe in this pic.
FX Double Moderator -.jpg
mount 1 - Copy.jpg
 
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I appreciate all your input! 👍🏼 Thanks for helping me in my decision process.


🔹️This is not about how to make a specific gun quiet, but if ANY .30cal can be made quiet enough to be called "backyard quiet".

🔹 It's also not about shooting .30cal in a backyard — I would anticipate this gun to do duty close to lifestock. 👍🏼

🔹 Gerry, yeah, you're right: the pellet weights given in the OP are not .30cal, my mistake.


Please, keep the data coming. 👍🏼

Matthias 😊
 
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Miami Airgunner said:
Rats? A .177 will do fine no?
I mean, I enjoy my overkill as much as the next guy, but if totally quiet is the idea, and it's just rats, go small.
Click to expand...

Miami,

you have no idea how large the rats are in my city....
I mean, Miami metro is big, I give you that: 6 mil.
But where I live, Lima metro, we got about twice that many.

➔ And so... — the rats look more like this:
Quarry. Rat. Giant Rats -- House Size.jpg



Yupp, I think a .30cal should at least be considered to tickle their ears a bit.....









OK, I couldn't resist.

▪ And yes, I am sooooo kidding.
▪ And you are sooooo right with your comment.

▪ And you also have brought up the two extremes I'm trying to balance out here:
QUIET on the one hand, and
OVERKILL on the other. 😉

Matthias
 
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