Back Yard Gun Muffler

Sixgun · Post by **Sixgun** » Fri Dec 21, 2007 11:43 am

Dudes & Fellow Shootists,
I post these pics from time to time to educate newcomers on how they can shoot in their backyard without disturbing the neighbors. I am sure it can be scaled up or down according to your preferences.

It is made of a series of baffles made from 3/8 plywood all stuffed into a plastic 55 gallon drum. The holes in which you shoot through are made progressively smaller towards the end. Helps keep the sound in the drum. Standard insulation is stuffed in between the baffles. 1/4" rat wire keeps the insulation from falling in the area where you shoot.

The blue "add-on" drum is not needed. I just use that to keep longer barreled rifles from getting too close to the end and as a resting place, especially for handguns.

A word of caution--Its no good for blackpowder guns as the blast comes right back at your face! Maybe some smarter guys here can figure out a way to get past that. Also, velocities should be kept below the speed of sound. (1100 fps) It will still work with high velocity rounds but as the bullet passes anything, a loud crack from breaking the sound barrier is heard. Seems to me to be just as loud.

Target velocity rounds, along with 1000 fps 45-70's sound like, well, not much. Maybe a little "thump". The wife can't hear it in kitchen, 30 feet away.-----------------Sixgun

,

canonsix · Post by **canonsix** » Fri Dec 21, 2007 11:53 am

Great design and I truly appreciate your matched trio of KILLER DOGS

Doug

Hagler · Post by **Hagler** » Fri Dec 21, 2007 11:56 am

WOW! What a neat dog house!

Seriously, Sixgun, I have seen that before, and I think your invention is neat. Thank you for refreshing my memory.

Shawn

handirifle · Post by **handirifle** » Fri Dec 21, 2007 11:57 am

Wht time is the launch set for? Looks like a rocket booster on its side.

Is the rear mount on that scope adjustable for various distances, or do you set it and forget it?

Junior · Post by **Junior** » Fri Dec 21, 2007 12:03 pm

Be nice and down size your photos.

JReed · Post by **JReed** » Fri Dec 21, 2007 12:44 pm

now thats just cool

Sixgun · Post by **Sixgun** » Fri Dec 21, 2007 12:45 pm

handirifle wrote:
Is the rear mount on that scope adjustable for various distances, or do you set it and forget it?

Handirifle,
The scope is a hundred year old Stevens and has external adjustments built into the mounts. After all these years, the whole sha-bang works great.

Junior, I am nice, but not very patient---I sized 'em big so people can see the details.

crs · Post by **crs** » Fri Dec 21, 2007 12:51 pm

Nice setup.
Whose back yard is that where you have the target?
Also, what type deer is that with the brown body and black mane?

Andrew · Post by **Andrew** » Fri Dec 21, 2007 1:00 pm

Looks nice, I may have to try that. Not at my house 'cause shooting in town, no matter how quie,t is still a "no-no" around here.

Sixgun · Post by **Sixgun** » Fri Dec 21, 2007 2:29 pm

The dogs are 3 of 14 Yorkies . These three (of four) are my "road dogs", Suzy, Eddie and Skittles, along with Spike (not in pic). The guys on Sixgunner.com used to call them "land pirahnas." They jump in the Jeep and raise all kind of heck. Last week they ate the console in my old '89 Wrangler when I left 'em in there while I was gunshop hopping. Thats OK, they are my buddies.

crs--Those big "deer"are worthless. (my wifes) Thats all they do is eat and ----, cost vet bills, shoe bills, etc. At least the dogs work for their keep. The yard is ours. I married a farmers daughter

(even when I was a young man, I knew I would need a place to shoot!!

Rusty · Post by **Rusty** » Fri Dec 21, 2007 2:39 pm

That's just plain cool!!

Thanks for sharing. Do they work OK with .22's?

Rusty <><

danthegunman · Post by **danthegunman** » Fri Dec 21, 2007 5:51 pm

I think I'll get busy building mine Sixgun, Thank for the look.

Sixgun · Post by **Sixgun** » Fri Dec 21, 2007 6:08 pm

Rusty wrote:That's just plain cool!!

Thanks for sharing. Do they work OK with .22's?

Rusty <><

Rusty, They work super with .22's, but like I said in the post, the velocity has to be under 1150 fps. Handguns usually don't get that fast even with HV stuff and I use target velocity ammo in rifles. I mean QUIET. If you look in the second pic, you will see a white spot in the background (to the left of the horse) That is a 8" gong at 140 yards with a a silhouette chicken above it and to the left. When I am shooting at that gong with .22's, the only sound you hear is the bullet smacking the gong. Its the same when using 400 grain bullets with 11 gr. of Unique in the 45-70. A BIG noise from the gong but no gunshot. I do have some uppity neighbors that I like to keep guessing

2ndovc · Post by **2ndovc** » Fri Dec 21, 2007 6:10 pm

That sure is a trophy of an '85!

Now I know what to do w/ that plastic barrel I have behind my garage!

Night Stalker · Post by **Night Stalker** » Fri Dec 21, 2007 6:30 pm

Thanks for posting Sixgun!..

DDude · Post by **DDude** » Fri Dec 21, 2007 6:49 pm

You might check out this site for some ideas on suppressing noise.

Post by **Ysabel Kid** » Sat Dec 22, 2007 12:06 am

But how do you screw that onto the end of your barrel?

Cool post!

marlinman93 · Post by **marlinman93** » Fri Dec 28, 2007 12:09 am

Your timing is perfect Sixgun! This question just came up at the ASSRA forum, so I linked this topic opver there so the guys can see what you've built!
Thanks!-Vall

Sixgun · Post by **Sixgun** » Fri Dec 28, 2007 6:59 am

marlinman93 wrote:Your timing is perfect Sixgun! This question just came up at the ASSRA forum, so I linked this topic opver there so the guys can see what you've built!
Thanks!-Vall

Hey Neato! My little guy (Eddie) sure is gettin' around. I'd like to see it. Where's the link?--------Sixgun

Lloyd Smale · Post by **Lloyd Smale** » Fri Dec 28, 2007 7:06 am

neigbor did the same with a bunch of car tires stacked together and stuffed with insulation. Just make sure the first 4 or 5 tires dont have insulation or the muzzle blast will play hell with it.

marlinman93 · Post by **marlinman93** » Fri Dec 28, 2007 10:08 pm

Here's th link sixgun!

http://www.assra.com/cgi-bin/yabb/YaBB.pl

Sixgun · Post by **Sixgun** » Fri Dec 28, 2007 10:11 pm

Thanks Marlinman! I'm on it!---------Sixgun

BTW--neat forum and site. Gonna check it out further----------me

cas · Post by **cas** » Fri Dec 28, 2007 11:07 pm

Oh come one.... that aint what that is. That's the thing James Coburn built to pump air down in the tunnel in the Great Escape. You can't fool me.

Grizz · Post by **Grizz** » Sat Dec 29, 2007 12:58 pm

Nice job Sixgun

Do you have a velocity and pressure number for the 400g+Unique load?

Seems like a candidate for the 425g cast I shoot.

Thanks,

Grizz

Travis Morgan · Post by **Travis Morgan** » Tue Jan 01, 2008 4:07 am

Thanks for posting! Good idea! Wonder if my wife would notice one in the basement?

Sixgun · Post by **Sixgun** » Tue Jan 01, 2008 8:24 am

Grizz wrote:Nice job Sixgun

Do you have a velocity and pressure number for the 400g+Unique load?

Seems like a candidate for the 425g cast I shoot.

Thanks,

Grizz

Grizz, the 11 grains of Unique with a 350-450 gr. bullet will run just about 1050 +/- 50 fps, according to bullet weight. It is below the speed of sound which makes it ideal for the muffler. Very safe load for all 45-70's. I have many thousands of these loads through various guns, old and new. Pressures run in the low teens.

But like I said earlier, you have to be careful you don't double charge. Just drop the 11 grains in loose in the case and slap the bullet on top!------------------------Sixgun

rjohns94 · Post by **rjohns94** » Tue Jan 01, 2008 8:27 am

nicely done sixgunner. A very good post indeed.

John Boy · Post by **John Boy** » Tue Jan 01, 2008 1:05 pm

Sixgun, great idea
and
thanks for posting
the pictures.

Would you
mind
cropping
the
pictures
so
we can
read the
posts
without
scrolling
back
and
forth?

Thanks Kindly

Grizz · Post by **Grizz** » Tue Jan 01, 2008 10:10 pm

Sixgun wrote:
Grizz wrote:Nice job Sixgun

Do you have a velocity and pressure number for the 400g+Unique load?

Seems like a candidate for the 425g cast I shoot.

Thanks,

Grizz
Grizz, the 11 grains of Unique with a 350-450 gr. bullet will run just about 1050 +/- 50 fps, according to bullet weight. It is below the speed of sound which makes it ideal for the muffler. Very safe load for all 45-70's. I have many thousands of these loads through various guns, old and new. Pressures run in the low teens.

But like I said earlier, you have to be careful you don't double charge. Just drop the 11 grains in loose in the case and slap the bullet on top!------------------------Sixgun

Thanks Sixgun, I'll give it a whirl.

Grizz