recoil

[Hrsmn51]

I recently purchased a new Remington 700 with the 5r 10 barrel in the 300 win mag. When shooting for the first time I experienced right hand upward twist during recoil. Shots off bipod as well as bags. The twist was more noticeable off the bipod versus the bags. Any ideas how to correct this or what I may be doing to cause this???

 

[Steve Blair]

I recently purchased a new Remington 700 with the 5r 10 barrel in the 300 win mag. When shooting for the first time I experienced right hand upward twist during recoil. Shots off bipod as well as bags. The twist was more noticeable off the bipod versus the bags. Any ideas how to correct this or what I may be doing to cause this???

[br]
You are causing it by firing the gun. [br]
Muzzle displacement (for right-handed shooters) up and to the right is expected, particularly in heavy recoiling rifles. The shoulder cannot completely resist the recoil and rotates right. The butt is supported below the bore center line and causes the barrel to displace upwards. A muzzle brake will reduce the felt recoil and displacement. Certain types of brakes, called vector compensators, can directly reduce or eliminate muzzle movement but can be just as much of a problem as learning to deal with it. [br]
When shooting from the bipod, rotate your body more to the right and align with the rifle. That will reduce the tendency to displace right.

 

[Larryh128]

Right hand twist on the barrel results in the rifle trying to turn right upon firing. I make my own brakes and that is why I use a left hand offset port pattern. 36 ports in 6 rows at 60 degree spacing with each row from 1-6 being offset 10 degrees left of the one before it. With the gas pattern being dispersed left in a helical pattern it pretty well takes care of the rifle torque. Both of my 300's and all of my bud's are this way & it works very well. Also DRAMTICALLY reduces recoil.

 

[Steve Blair]

Right hand twist on the barrel results in the rifle trying to turn right upon firing.

[br]
That explains barrel torque, a relatively minor part of barrel movement. How do you explain movement up and to the left for left-handed shooters?

 

[bheadboy]

simple, the rifle will recoil up and away from resistance, YOU - thus left and up.

Bob

 

[Steve Blair]

simple, the rifle will recoil up and away from resistance, YOU - thus left and up.

Bob

[br]
Yes, Bob, I know that. The question was directed at Larry whose post implied that right hand barrel torque was the primary influence.

 

[Larryh128]

Can't explain it as I'm not a lefty but I'm guessing that a right hand helical brake would solve it.

 

[Larryh128]

If you really want to see an exaggerated effect of a right hand twist fire a hand cannon with one hand and a death grip on it. You will swear that you broke your wrist trying to hold back the RH torque.

 

[Steve Blair]

If you really want to see an exaggerated effect of a right hand twist fire a hand cannon with one hand and a death grip on it. You will swear that you broke your wrist trying to hold back the RH torque.

[br]
I have, but torque is still not the primary cause of rifle muzzle displacement.

 

[Larryh128]

What's your cure, I posted mine. If you're holding the rifle correctly it shouldn't be trying to get away from your body. And if you ever shot a contender in a rifle cartridege you will know first hand about RH torque.

 

[Steve Blair]

What's your cure, I posted mine. If you're holding the rifle correctly it shouldn't be trying to get away from your body. And if you ever shot a contender in a rifle cartridege you will know first hand about RH torque.

[br]
Try shoulder firing an FG-42 or M14 on auto and you'll know about muzzle displacement. There is no "cure". If you think there is, fine. I fired a Contender in .45-70 and, yes, it does have significant barrel torque. But, the torque pales in significance compared to recoil.

 

[Larryh128]

With the proper brake/cmpensator set up you can indead eliminate any noticable torque and the bulk of recoil. I've played with a lot of designs because I can simply chuck up a piece of stock and do it. I know that I can adjust what the rifle is doing by simply changing port location or the difference in clocking a brake. My rifles don't beat me nor do I want one that does and I tend to shoot a couple of them fairly hot. You can't change the laws of physics but you can make them adhere to your plan.

 

[Steve Blair]

Larry, [br]
I designed and built the caliber .50 BMG rifle pictured below (when demonstrating it in Dubai), patented a series of muzzle brakes in the early eighties and was a member of the Ultra Light Weight Howitzer engineering team which included Picatinny Arsenal, Watervliet Arsenal and Benet Labs. I have a lot of experience measuring muzzle brake performance and recoil mitigation. [br]
If you believe that you can eliminate torque and recoil, more power to you, sir. You've accomplished something that no one else has.