Advanced Marksmanship Rifle canted on bipod after shot

jaym_100

Sergeant
Full Member
Minuteman
Jun 8, 2010
188
0
41
Mississippi
Whenever I shoot my personal rifle (Rem 700 5R HS precision stock) the rifle cants a little. After each shot I have to level it. My bipod is a harris and it tightened up to where it is not easy to move. On my issued rifle (Rem 700P HS precision stock) it does not do it. I am not sure why it is doing this and I have also started shooting like crap. Not sure if they are related, but I'm doing something wrong.
 
Re: Rifle canted on bipod after shot

As the bullet accelerates along the barrel, rifling twist exerts a continuous rotational acceleration on that bullet. The equal and opposite reaction is a torque being exerted on the barrel around the bore axis.

Locking down the bipod only forces that energy into the ground through the bipod feet. This causes bipod hop.

The torque itself is harmless as long as you don't attempt to resist it. Allow the torque to act and dissipate itself consistently and freely, and much (most..., all...?) of the hop should disappear.

If you are using a bipod that has no free tilt feature, bipod hop is a fact of life.

Greg
 
Re: Rifle canted on bipod after shot

what are the twist rates of each of the rifles you mentioned and what TYPE of rifling is it?

I have a 10 twist Douglas barrel that torques a hell of a lot more that my other barrels with the same twist with the same muzzle velocity.

I believe the different types of rifling that may be more/less gentle on the bullet also makes a difference (i.e. 5R, 5C, cut vs button vs Hammer Forged, etc... nominal bore diameter like .300 vs .298 and so on...)
 
Re: Rifle canted on bipod after shot

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: sobrbiker883</div><div class="ubbcode-body">Try a smoothbore barrel, it will eliminate the torque...... </div></div>
Such a comedian
 
Re: Rifle canted on bipod after shot

I sometimes use a bipod when it's expedient, but, rather than placing the non-firing hand at toe of butt plate, I place it on the handguard using it to help control the rifle until recoil has subsided. It works; but, it demands the same sort of position as built without artificial support.