Best Bigbore brake

JE

No accusations, but interesting it seems that all the internet claims of high recoil reduction on the "brakes tested so far" are not proving out by a team of people that are from here and experts in the field that do it for a living with very sophisticated equipment.

Like I said, I would love to see a phase two so if you or anyone else has the "super" brake send it to them and lets see where it falls out. I did not even realize you were selling brakes until this last post.

If anyone really has a 70% reduction recoil brake, this test would prove it and they could corner the market literally as the highest so far is 46% or 47%.

Also, like it or not, it is probably going to be the standard test for a long time vs a self proclaiming marketing video which is the norm now. Nothing personal just fact.

Everyone should take a moment and read the link below on the study issues, methodology and equipment and see why this is this will probably be the standard for awhile.

Muzzle Brakes: Recoil Primer, Test Equipment & Rifles | PrecisionRifleBlog.com



It is very simple, Watch the test Videos, look at the numbers on the machine from the first test to the last. and do the math. I have the same problem with most test that are just some charts with data and no video of the test that verifies the numbers.

www.jecustom.com - Home of the Assassin Muzzle Brake

Test #1 a 30/06 (We use this rifle for a bench mark every time we start a test to make sure the test bed is the same and has not changed invalidating all other test. The rifle weighs 7.5 Pounds and produces a recoil of 21.5 calculated was 20.7 so if any thing our recoil numbers are conservative
lowering the recoil %.

Test #2 A 300 RUM that weighs 12.5 pounds and has a calculated(And tested) recoil without a brake of 32.5 ft/lbs of recoil and with the Assassin 10.5 ft/lbs for a 68% reduction in recoil. (From
32.5 to 10.5) Do the math.

Test # 3 another 300 rum that weighs 11.5 pounds and the calculated/tested recoil was a little higher at 34.9 as expected without a brake,and the test showed 13.3 with an Assassin experimentally tuned produced less recoil reduction.

Test #4 the same 11.5 pound RUM with a fully tuned Assassin went from 34.9 to 10.5 for a reduction of 70%.

All test were open videos taken on the same day under the same conditions using the same like ammo for like calibers. I can't make you believe anything, just show the test in real time and for
all to see.

I do not trust Charts because they can be skewed to make something look better than the competition (Just like reloading manuals printed by a powder manufacture always make there powder look better that there competitors. Isn't it strange that all charts show that the producer of the charts products are at the top of the list ? Why would they show someone's products out performing theirs? the performers are simply left out.

PS : we have reached even higher recoil reduction than the 70% on a 30/378 Out of a maximum potential/total gas recoil of 74.2 % the tuned Assassin produced just over 73 % recoil reduction.
A friend on this site named rich has this rifle and was very happy with 73% reduction in the 30/378
plus the improvement in accuracy because of reduced recoil.

I even tested his rifle with the factory brake that proved the makers claims of 53% and gave him the results of the 73% reduction of the improvement.

I don't know how to prove it any more so I wont try.

All test are there to see. and I am not in the business, so I only make a few custom brakes for friends and relatives. So I don't need or want to push my brake and only shared the test to help people decide what type and brand of brake to buy for there budget and needs.

To end On I high note: producing a better brake has brought a new group of better designed brakes
for all to use. and like anything else when a better product comes out everyone scrambles to improve there products to stay up. (Bullets that are available nowadays are a prime example of this).

J E CUSTOM
 
where do you purchase assassin breaks? what is the felt concussion to the shooter compared to other breaks?
 
where do you purchase assassin breaks? what is the felt concussion to the shooter compared to other breaks?

I don't have the Assassin (... yet) but rest assured Jerry will take care of you >>> www.jecustom.com - Contact us

Like felt recoil felt concussion varies from end users and probably even harder to measure than recoil and requires high tech sensors.

This is just me (no expert ... just my personal preference) but I stay away from MB designs that "all" ports are angled towards the shooter. My latest MB has slightly angled towards the shooter except for the port closes to the shooter (90 degrees/perpendicular to the muzzle).

Lots of very happy and satisfied end users here. Good luck!

Ed
 
These videos make my tests look amateurish. But then I am an amature. I made a slide from sheet metal and tried different bullets and different brakes. Here are my results.

I put a chronograph just past the slide. On July 15, 2007 I tested a few rifles. Large chamber brake means the inside was turned out resulting in a baffle at the end of the brake. Small channel means a small hole, .015"over bullet diameter, all the way from the muzzle to the exit of the brake.

Here are enough to get an idea how different weights of bullets affect free recoil travel. Which translates into usable information.

No brake
.223 26" heavy barrel 55 grain moly 3,306 feet per second 1 13/16"
.223 22" light barrel same ammo 3,260 2 3/8"
.223 22" light barrel 60 grain 3,118 3 1/8"

7 Rem Mag 120 grain 3,380 12 7/8"
7 Rem Mag 140 3,027 15 5/16" 7 Rem Mag 170 2,852 19 15/16"
7STW 130 3,763 15 1/8"
.375.-416 Rem Mag 270 2,968 29 ¾"
.375-.416 Rem Mag 300 2,858 35 11/16"

Factory brake with large chamber
7 Rem Mag 120 grain 3,419 7 ½"

Homemade small channel brake
7 Rem Mag 120 grain 3,417 3 3/8"
7Rem Mag 140 grain 3,056 4 ¼"
7STW 130 3,761 4 7/16"


Large chamber brake
.375-.416 Rem Mag 270 2,885 17 3/8"
.375-.416 Rem Mag 300 2,915 21 1/16"



Small channel brake
.375-.416 Rem Mag 270 2,952 12 3/8"
.375-.416 Rem Mag 300 2,882 17 ½"



Shooting Recoil slide 11/29/14 60 degrees
All holes are perpendicular to bore.

Started with a Savage using a Midway 24" barrel chambered to .257 Weatherby weighing 8lb 5.5 oz. The load was Nosler 100 grain Ballistic Tip about 3,500 feet per second. The powder charge of IMR7828 weighed 71.0 grains. A Federal 215 Magnum primer sparked the powder.

Conclusion first: Lots of smaller holes seem to be better than a couple large holes.

With no brake the free recoil rifle travel measured 15 3/16".
With the Shark gill brake made by Tom Hart of MOA Precision the travel was 3".
With the small "rectangle" brake made by yours truly the rifle traveled 3 ¾".
With the larger "square" brake again made by me the rifle traveled 4 ¼".

Switched to the Weatherby .257 SLR with a 26" Pac-Nor barrel. I t weighs 6 lb 13 oz. The bullet was a Nosler 85 grain Ballistic Tip about 3,800 feet per second. H4831from WW2 weighing 65.0 grains powered the cartridge. The same brand and number of primer was used in this rifle as the previous one.
No brake produced a free recoil travel of 16 5/16".
The six hole round brake made by me reduced the travel to 4 7/8".



12/6/14 60* brake with four angled slots at about 15 1/2degree threaded on both ends

Today I used the Weatherby Mark V ultralight six lug action without the scope. It has a Pac-Nor 26" barrel. The rifle weighs 5 lb 10oz. The load consisted of .270 Winchester cases necked down and blown out leaving about 3/16" neck. H4831 from WW2 @ 65.0 grains was ignited by a Federal 215 Magnum primer. The average velocity for the eighty-five grain G.S.Custom bullets was slightly over 3,800 feet per second. I fired three shots with each setup to verify the free recoil travel information generated.

Without a brake:
14 7/8"
14 5/16"
14 5/16"
Average - 14 ½"

With the brake installed so the ports angled toward the front:
4 5/8"
4 7/8"
4 7/8"
Average - 4 13/16"
reduction – 66.8%

With the brake installed so the ports angled toward the rear:
3"
3 ¼"
3 5/16"
Average - 3 3/16"
Reduction – 78%

I have no idea how these numbers would compare to a free hanging rifle with a way to record its travel. But at least we can see a pattern developing.
 
Late in the conversation, but my Savage in 7RM is at vendor right now about to get a JP Tactical brake put on. It has 2 large side ports and small holes on the top over the ports. They stated up to 40% recoil reduction.

https://www.jprifles.com/buy.php?item=JPTRE-2S

I didn't send it to them intending on this brake, and my brake research was not fresh when I did. So I kind of got diverted to this brake by the vendor and went with their suggestion.

Does anyone have experience with one of these and if so, are they a good one? $90 for the brake, $200 installed. It's not too late to cancel the order and waste the shipping fees if there's something better.

At 3", the Assassin is longer than I want. The Savage is a 114 with a 24" tube so a sporter profile. But it is capable of impressive groups if I do my part, which is hard with the amount of recoil it generates.

Any input welcome.
 
Late in the conversation, but my Savage in 7RM is at vendor right now about to get a JP Tactical brake put on. It has 2 large side ports and small holes on the top over the ports. They stated up to 40% recoil reduction.

https://www.jprifles.com/buy.php?item=JPTRE-2S

I didn't send it to them intending on this brake, and my brake research was not fresh when I did. So I kind of got diverted to this brake by the vendor and went with their suggestion.

Does anyone have experience with one of these and if so, are they a good one? $90 for the brake, $200 installed. It's not too late to cancel the order and waste the shipping fees if there's something better.

At 3", the Assassin is longer than I want. The Savage is a 114 with a 24" tube so a sporter profile. But it is capable of impressive groups if I do my part, which is hard with the amount of recoil it generates.

Any input welcome.

Yes, I have on my .270 AI propelling the 175 Matrix at 2993 FPS and it works very effectively. Four of my friends have theirs on their .300 WMs and they too are very pleased.

Not the best video but here's my first test and only video thus far ...

[ame]https://youtu.be/LeIUjDC1zdg?t=1[/ame]
 
I purchased a 5 Port Muscle Brake for my 338 Lapua Build. Very anxious to see how effective it is. I have the Mini Muscle on my 6.5-284, and it is very effective.
 
I purchased a 5 Port Muscle Brake for my 338 Lapua Build. Very anxious to see how effective it is. I have the Mini Muscle on my 6.5-284, and it is very effective.

I will be very interested to hear your results. I put the same break on my Lap imp. It is now a paper weight as it is currently being replaced by a PK medium. The 5 port left my rifle punishing with 300g pills. I bought the Muscle because of a great reputation and a great price. My thinking right now is that the 4 port is a better product just because the reputation is very good. The 5 port is brand new and no reputation. I have used the PK on many rifles now with exceptional results and will no longer experiment with another. Not on my own rifles anyway.

Steve
 
I have been shooting with the 5 port muscle brake since March on my 338 edge and 285 ELD-M. It is UNBELIEVABLE!!! I love it. I'd compare the recoil to a 243.
 
Steve

We talked before about this, did you ever end up boring it out any larger? You said you were .014 over .338 bore?

I did open up the first port to try and get more gas to the angled ports. Did not help. At that point I ordered a new brake. In the next week or so I will have a good comparison between the two.

Steve
 
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