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The second I saw the Mark IV Target I knew I needed to have it and make it quiet. I want to put a 22lr can on the thing but I know bulk ammo out of anything over a 4.5 inch barrel will most likely go super. Of course Ruger decided to put a 5.5 inch barrel on the target and not offer a stainless tactical 4.4 inch barrel model. Does anybody think it's actually worth it to get an inch cut off this thing. I put in my form 1 on a 6 inch 22lr can and can't decide if I should just get the tactical. screen_shot_2020-04-17_at_11.52.27_am.jpg

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No I dont.
 

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It’s not worth it.

I think your best option is to just get the 40126 target model. How did you come up with 4.5” for regular ammo to be subsonic?


https://www.ruger.com./products/markIVTarget/specSheets/40126.html

Or just get the 22/45 tactical which will give you the tactical and shorter threaded barrel. Granted it’s not stainless, but I am guessing your suppressor is not stainless finish either.


https://www.ruger.com./products/markIV2245Tactical/specSheets/40149.html


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It’s not worth it.

I think your best option is to just get the 40126 target model. How did you come up with 4.5” for regular ammo to be subsonic?


https://www.ruger.com./products/markIVTarget/specSheets/40126.html

Or just get the 22/45 tactical which will give you the tactical and shorter threaded barrel. Granted it’s not stainless, but I am guessing your suppressor is not stainless finish either.


https://www.ruger.com./products/markIV2245Tactical/specSheets/40149.html


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Lots of threads about 22lr that say 4.5 inches is pretty optimal for bulk ammo and keeping it sub.

http://www.silencertalk.com/forum/viewtopic.php?t=58491
https://www.reddit.com/r/guns/comments/2mj2a7/what_is_the_maximum_barrel_length_a_22lr_can_have/

Actually I got a beautiful form 1 stainless build that's 6x1. Will look great on it. I went to my lgs and held both and liked them both but the stainless was just so nice.

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Dont see the point of the expense unless you're gonna be a sniper/asssasin or follow another fad.
 

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Dont see the point of the expense unless you're gonna be a sniper or follow another fad.
I like the look of the stainless, and suppressors are nice to have for no ear pro and teaching new shooters.

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Lots of threads about 22lr that say 4.5 inches is pretty optimal for bulk ammo and keeping it sub.

http://www.silencertalk.com/forum/viewtopic.php?t=58491
https://www.reddit.com/r/guns/comments/2mj2a7/what_is_the_maximum_barrel_length_a_22lr_can_have/

Actually I got a beautiful form 1 stainless build that's 6x1. Will look great on it. I went to my lgs and held both and liked them both but the stainless was just so nice.

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I just run cci subsonics in my rimfire suppressors. Buy a couple cases when they go on sale and I have enough inventory to last this current crisis. BTW, a rimfire, even at supersonic speed is hearing safe with a suppressor. Sure there is the crack, but if your just plinking you are still good to go, it’s just not super sniper movie quiet.


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My 6 7/8" MK III chronographs high velocity 22 LRs (rated at 1250 fps) at 920 fps .... far less than supersonic (1150 fps). Standard velocity 22 LRs (rated at 1080 fps) chronoed at 850 fps. You will find it's easier to quiet any pistol with a longer barrel because more powder burns up inside the bore. With a short barrel, some of the powder burns in the air and makes a loud band, which a silencer won't help much. I don't know where you read "Bulk ammo out of anything over a 4.5 inch barrel will most likely go super." but it is far from true. My Thompson Center Contender with a 10" barrel barely makes supersonic and it is a non vented, non-semi auto, so you don't lose any velocity from a B/C gap or velocity robbing power required to operate a semi-automatic.
 

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Definitely not.

I shoot standard ammunition out of a Ruger 10/22 and it stays subsonic in a 16.5” barrel.



This Ruger Mark IV Target with T&J Tactical Integral Suppressor, Volquartsen trigger kit, Volquartsen competition bolt, and Vortex Venom definitely stays subsonic.


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What lowegan posted is spot on. I run a YHM can on a 10" SBR 22lr AR and rarely have a round go supersonic with bulk factory ammo. You just do not get the full powder burn in a shorter barrel - plus the gas used to work the action also takes away from the velocity.

The feet per second rating marked on the boxes of 22lr ammo was formulated using rifle barrels - not shorter pistol barrels. I will use CCI Standard Velocity ammo in my 22lr rifles with 16 and 18 inch barrels.

As for chopping a MKIV Target - do not. Pick up a 22/45 and you will be better off in the long run - unless you just have money you want to burn. I have an early silver 22/45 with the round vents and it is a perfect host for a can...

Silencers on semi auto's are sometimes disappointing. You are expecting a "movie quiet" experience and that does not happen, The sound of the action when fired takes away from that - it is louder than you think... Shooting with a can indoors is even more disappointing with sounds bouncing off the walls and ceiling...

There are two other factors that play a part in subsonic and supersonic when dealing with a silencer. They are the ambient air temperature and your elevation - just something else to think about..
 

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What will having the barrel cut down and rethreaded cost? For the same money you could buy years worth of good quality ammo, and a Iowegian noted, even HV .22lr ammo isn't supersonic out of a standard pistol; barrel. If you are concerned, buy standard velocity ammo that assures it's subsonic out of any barrel.
 

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I have a software package called Ballistic Explorer and it includes a very nice data base for factory ammo. Included with each specific brand and type of 22 LR is the advertised bullet weight, bullet style, ballistic coefficient, velocity, and barrel length. All Federal, Remington, Winchester, Ely, and PMC 22 LR ammo is velocity rated for a 24" barrel. CCI LR ammo is rated from a 18 1/2" barrel. None is velocity rated from a handgun.

There is a huge misconception about subsonic ammo making people think it is quiet. Here's an example: When any firearm is fired without a silencer, it will make a loud bang no matter if the bullet is subsonic or supersonic. If you just so happen to be close to the line of fire as the bullet whizzes past you, if it is supersonic, it will make a "crack" like sound as the bullet brakes the sound barrier passing by. If the bullet is subsonic, all you hear is a whizzing sound from the bullet. The shooter will never notice the difference. Silencers reduce the sound level quite a bit but handguns will still make a bang, mostly because all the powder did not burn up in the bore so the rest burns up outside the muzzle and makes a report. With a 22 LR ammo in a rifle barrel equipped with a good silencer, you won't hear much more than a thump sound plus the mechanical sound of the action cycling if the gun is a semi-auto.

Most high velocity 22 LR cartridges fired from a 24" barrel, go subsonic at 30~40 yards. Standard velocity 22 LRs never do go supersonic, no matter what the barrel length. Hyper velocity 22 LRs such as CCI Stingers will stay supersonic until 80 yards when fired from a 24" barrel and can go supersonic from a handgun. As I recall, typical high velocity 22 LRs take about a 12 " barrel to achieve super sonic. I know my 10" T/C Contenders was about 50 fps short of going supersonic with CCI Mini-Mags.
 

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Discussion Starter #13
Holy smokes. Thanks everybody for all the info. I guess no need to change the barrel, thanks for all the great info. Going to just buy a big case of CCI mini mag (when it's available).

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