Bear Claw,

Is it possible to make an integral muzzle brake for the .600 Overkill that permits the front sight to be at the end of the barrel/muzzle (at the end of the brake? I don't like the look of a gun that has a brake after the front sight - it looks out of proportion. I am thinking that an integral brake that leaves a spot of room at the end of the barrel for front sight mounting would be just right.

Also, can the holes for the brake be angled forward 15 or 20 degrees to cut the noise down a bit?

Thanks.

Yep I can be done but you will loose 3 inches of rifling after the brake part of the barrel (3 inches of it) is counterbored for bullet clearence. Also when you leave out a row of holes
on the top of the barrel where the front sight ramp fits you need to leave out the opposite row of holes on the bottom of the barrel. You don't want more gas pushing down than up. Based on the fact that these brakes have 30 holes, eliminating
4 to 6 of them will diminish the effectiveness of the brake by about 14%. The holes can be angled but that too will will have a negative effect on the performance of the muzzle brake. I have found that brakes aren't as loud on these big bore guns with their heavy slow bullets as they are on the high velocity guns. I'm beginning to think that the higher chamber pressure the louder these brakes become.

Like Dennis Miller says: It's just my opinion, I could be wrong.

In my opinion, which is rarely wrong, you are about 99% right .

Thanks I need to work on that other 1%

500,

My smith angled my .585 break holes 20 degrees forward for noise reduction, he said he has done this before and it works. I agree that the sights would look nice at the front, but hey.

500 Grains,

Do you like the look of the Ryan Breeding rifles

Courtesy of 470Mbogos site

http://www.470mbogo.com/RBreeding.html

There is a 585 there. They have a sort of an assault rifle look to them. If I was going down 585 Nyati road I have would have one made as a copy of those rifles to look at.

Mike

Mike do you know if granite Arms actions are imported into Australia ?? They look great. Down the track when I get some money I would not mind going "all the Way" with a big bore on one of those grainte arms action. If I built something on that I would not spare any expense.

PC,

You could bring one in yourself. I think they are about $3000US. You could also add 30% import duty unless you could get them to send it as a cheap item. Only problem with that might be insurance, that is, if you wanted to insure the action for the full amount.

So you could be looking at over $7000Aus.

Mike

Bloody dear Mike, but if I get a high paying job one day I will get one and make up a no-expenses spared big bore. If I like the .585 it will most likely be that.

PC

From your post:

but if I get a high paying

Go and buy a book called Think and Grow Rich by Napoleon Hill.

It does not relate just to money.

There is a poster on this forum and also 24hourcampfire called Don Martin 29 who has found the "opposite" book. If you read some of his postings you will see what I mean. He recently posted (on 24hourcampfire) that it was unfair that Elmer Keith had no calibers named after him but that Roy Weatherby has at least a dozen. Roy Wby is a reflection of Napoleon Hills book.

Whatever the mind can conceive and genuinely believe can be done. There is no luck, only desire.

Mike

Good advice Mike.

I will look tha book up after exams finsh in November. I have heaps of reading at the minute for Uni.

PC,

Ever hear the story about wood cutter who did not have time to sharpen his axe??????????

Mike

I will look it up Mike, you obviously discovered I am a procrastinator

Mike,

I have seen Ryan Breeding's rifles and he does fine work. I prefer an english style stock without the raised comb, but Ryan makes a few of those too. Also, I would like to find a way to get the sight at the end of the barrel, for cosmetic reasons.

Bear Claw,

Assuming the modifications you mentioned are made to the brake, could another row of holes be added to the rear to get that 14% back?

500 Grains,

I like the look of the Breeding rifles.

However, if I was stuck on having the sight up front, I would consider having the sight mounted directly onto the removable muzzle brake and with obvious allowance made for holes.

But I shoot lots of reduced loads and after having had 2 460s with Pendelton Dekickers I would never again have a rifle with intergral brake. It use to annoy me like hell shooting lighter loads where the brake was needed but still having the noise.

Mike

500,

on those ryan breeding rifles I kind of like the way the look. They look "tough" I suppose that is the word for it.

500Grains i'm not sure. To increase the number of holes they would have to be made smaller. Let me put a pencil to it & figure it out. What front sight ramp were are you thinking about?

[ 08-25-2002, 20:52: Message edited by: Bear Claw ]

Bear Claw,

What I mean is to keep the holes the same size, but add ANOTHER ROW of holes, just to make up for those lost to the sight.

What do you think?

As you add rows of holes the distance between the holes decreases thereby weakening the brake. If you look at a brake the steel in between the holes is in a little pie shape section. There has to be enough steel between the holes to keep the brake from blowing apart as the 40,000 to 50,000 psi gases blow through the brake. As the number of holes or the size is increased this little pie shaped piece of steel starts getting real small real fast. You have to reach a happy medium. i'll look around for an old brake to cut open & post a pic here to better illustrate what I mean.

[ 08-25-2002, 21:12: Message edited by: Bear Claw ]

Here is a scan of a cross section of a scrapped brake I had laying around. The little pie sections I was talking about are clearly visable. These are what holds the brake together at its weakest point; where the holes converge. Not only does the cross section of the triangles get narrower but they also get shorter as the "chamber" that is created as the holes converge gets bigger. The OD on this brake is .675


[ 08-26-2002, 04:36: Message edited by: Bear Claw ]

500 Grains,

I don't know why you are even bothering with brake are reading Todd E and someother blokes recital that they make no difference

Mike

Bear Claw,

Is it possible to make the brake 1/4 inch longer so that there is a place to put the additional row of holes without crowding the other holes together?

Yep, but actually 1/2" would be needed.