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Holland QD Muzzle Brake - 2 Shot Review

 
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  #8  
Old 08-12-2005, 10:40 PM
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Re: Holland QD Muzzle Brake - 2 Shot Review

Dave,

I have never seen a measureable difference in group size on my rifles fitted with a Holland or similiar design compared to a radial ported break such as the Vias.

I have however observed some braked rifles to not shoot well as a result of poor fitting of the brake in alignment with the axis of the bore. Mainly from not reaming the bore accurately with the axis of the bore.

When you compare a partition style brake such as the Holland against a radial ported brake, both will have advantages and disadvantages.

With a muzzle brake, the faster the escaping gases are deverted, the more efficent the brake will be at reducing felt recoil.

Also, the faster the gas is released, the louder the brake will sound to the human ear.

So yes, the Holland will be a bit louder then the Vias type brakes but it will also be more efficent at reducing felt recoil.

One thing I personally like with the Holland brake and similiar designs is that you can ream the bore hole quite tight compared to a multi baffle radial ported brake. The reason again is because the gas volume is released so quickly that you can make the bore hole much tighter to the bullet diameter, which in effect creates an even more effective muzzle brake.

On a radial ported brake, you have to keep the bore hole a certain amount above bullet diameter because you are limited in the amount of gas that can be released in a given amount of time.

THis also depends greatly on the cartridge you are using and the barrel length on the rifle as these two factors greatly effect muzzle pressure is what makes a muzzle brake work. The higher the muzzle pressure the better it works.

So in my personal experience, I have never been able to tell an accuracy difference between the two types of brakes. Only that the partition style brakes are more efficent at reducing felt recoil.



THis is the most efficent brake I have yet to shoot. Not that it is much better then any other partition style brakes but on my 338 Kahn, it reduces recoil with a 300 gr ULD RBBT at 3100 fps to that of a 22-250 heavy varminter. The brake on the left is a 5/8" Holland QD brake.



This is the brake fitted to the Kahn. The reason it works so efficently is because the bore is reamed very tight to bore diameter and the contact area on the partitions is very large. The larger the area on the partitions the more efficent the brake will work. You will also notice there is no top ports either as there are with the Holland. In spite of this there is ZERO muzzle jump with this rifle but that is probably due to the stock design as well as the brake.



If the rifle is built properly and the brake fitted correctly, groups like this will be the result with either design in my experience.

Kirby Allen(50)
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Kirby Allen(50)

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Home of the Allen Magnum, Allen Xpress and Allen Tactical Wildcats and the Painkiller Muzzle brakes.

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  #9  
Old 08-12-2005, 10:59 PM
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Re: Holland QD Muzzle Brake - 2 Shot Review

Kregg,

What is the design differences between your brake and the Vias. They look very similiar, just wondering what the difference is.

Kirby Allen(50)
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Kirby Allen(50)

Allen Precision Shooting
Home of the Allen Magnum, Allen Xpress and Allen Tactical Wildcats and the Painkiller Muzzle brakes.

Farther, Faster and Flatter then ever before.

Web Page: www.apsrifles.com

allenmagnum@gmail.com
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  #10  
Old 08-12-2005, 11:03 PM
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Re: Holland QD Muzzle Brake - 2 Shot Review

A concern with the Holland that I am fretting over is precisness of indexing such that the upper holes are EXACTLY straight up. I'm anal enough to wonder about mine and wonder what "a little off" will do "if" it is a little off.

It may take a bit more talent to do a proper installation as compared to one with all of the holes?

Looking forward to shooting in the dirt tomorrow. No holes in the bottom was a big factor in the purchase decision.
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  #11  
Old 08-12-2005, 11:07 PM
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Re: Holland QD Muzzle Brake - 2 Shot Review

Just as I figured. Kirby never sleeps [img]/ubbthreads/images/graemlins/grin.gif[/img]
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  #12  
Old 08-13-2005, 02:31 AM
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Re: Holland QD Muzzle Brake - 2 Shot Review

50,when you install a brake that has to be oriented AKA the holes on top should be in a vertical fasion,wouldn't want em off 10 deg. like Roy said,how do you accomplish this? i assume you have male and female threads with a shoulder on each.also do you put the hole through the middle after it's installed and what kind of clearance is a tight fit?
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  #13  
Old 08-13-2005, 06:58 AM
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Re: Holland QD Muzzle Brake - 2 Shot Review

my holes are bigger on my brake and there is more holes in it and it works better and is alot cheaper. to check your brake to see how much gas goes out with the bullet shoot at a peice of paper 6-inches away that will tell you how good your brake is. when you do this with any of the brake's that i make all you get is a bullet hole. if the hole in the brake where your bullet exit is to big the gas will blow a big hole threw the paper. thats why i make my own brake's because i know the hole threw them are dead ture to the threads so my exit hole is only 20 thousands over bullet dia at the last 1/4 inch of the brake. www.parrysgunsmithing.com
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  #14  
Old 08-13-2005, 07:29 AM
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Re: Holland QD Muzzle Brake - 2 Shot Review

this here is a brake that works so well i install it on the pueblo police sniper rifle's and there AR-15 its 3-inches long and 1-inch o.d with 100 percent all gas goes out all the sides in testing. web page this brake here is $110.00 made and installed. www.parrysgunsmithing.com
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