Felt Recoil vs. crown angle?

[spitfire_er]

I was just thinking. I've been doing a few barrels lately and have been putting the 11 degree crown on most of them, but I have a few with straight 0 degree crowns.

Just thinking.... would say an 11 degree crown affect the felt recoil vs the straight crown. My thinking is that the gases are still deflecting off the barrel with the 11 degree crown in a radial and slightly backwards pushing motion, whereas the straight crown may still push back on the barrel, but more of the pressure is being sent straight out radially and not very much being pushed on the barrel.

I'm sure it's just a negligible amount, but food for thought.

 

[KMart]

I think you hit on it in your last sentence.

Negligible refers to the quantities so small that they can be ignored (neglected) when studying the larger effect.

 

[NateG]

I would imagine the effect on recoil of a 11° and a 0° crown is very small, but it sure does seem like the difference in recoil between my 6BRX with a 32" barrel and a 30" barrel with a bloop tube (also 6BRX) is a bit noticeable. (At least when shooting prone with sling-and-irons)

The actions are different, and that could be part of it, but they're both tube guns, and the 32" was formerly a medium palma now a 30" medium palma. The one with a bloop tube is a heavy palma. It does seem like the tube seems to increase the recoil slightly. It doesn't give the 6brx a Palma rifle's recoil, but it does feel a bit stronger with than without.

 

[OldDoug]

Muzzle breaks are used to reduce felt recoil. Certainly there is some effect on backpressure as a function of recoil. My opinion is that breaks are used to stop muzzle jump on varmint/target rifles or divert gas to stop extreme recoil.

Might consider the booster features on the Maxim and Vickers guns. Of course the muzzle is normally enclosed in a Muzzle flash hider.

This gas pressure impinges on the front of the barrel forcing it backward and begins the unlocking process. The 08 has a recoil washer in front of the barrel that can be pushed back to bear on the muzzle. The 08/15 muzzle has a wider face with a screwed on sleeve. 1910 Russian has a large 'bulb' on the from 6+" of the barrel. The Vickers has a cup shaped recoil plate screwed on to the from of the barrel. The last 3 increase the front area of the muzzle.

My take is that the .550 to .900 muzzle diameter on sporting/Varmint/Bench guns is too minimal to consider. The purpose of Muzzle Breaks is to reduce felt recoil in firearms where the size of the cartridge would be the problem. Don't see how a flat Vs. 11 deg crown would make any appreciable difference.
Old Doug

 

[spitfire_er]

Guess I should have mentioned, I was thinking about this while working on my F-Class rifle. I have a 1.25" muzzle.

I've done quite a few muzzle breaks for other people, but not a fan on my rifles unless I'm doing a 338 RUM class or larger shooting the heavies!