Barrel harmonics obstruction

17remhunter

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Joined
Nov 12, 2025
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I read that when working up a new load at the bench you should always use a front rest bag and never a bipod mounted in your rifle because the bipod with interfere with the harmonics of your barrel has anyone heard this?
 
Is the bipod mounted to the barrel or to the forend sling stud?
Do you intend to have the bipod on when hunting?
Are you going to have the stock off and re-torqued after you work up your load?
Do you use a MagnetoSpeed?
What is your barrel contour?

I think there are lots of things that can effect your nodes, but you can get lost in an OCD meltdown trying to manage them all.
 
If your barrel is free floated then a bipod is a non issue. I’ve done a ton of load development and always use a rear bag and Harris bipod.

If your barrel isn’t free floated then there is a whole mess of harmonic issues that you need to deal with.
 
Bags vs bipod can impact your groups or POI because of recoil management. If a bipod is loaded pretty hard vs shooting off bags is where i've seen the biggest difference. Some times shooting with a bipod can result in bouncing under recoil. Like others said, if a barrel is free floated i would think it's less of a harmonics thing and more of a how your gun moves under recoil before the bullet exits thing.
 
Two times now my Dad has called me to come to the farm because a gun that has previously been stacking bullet holes was shooting crazy. Both times he was sitting there with the barrel laying directly on a bag...don't do that. As long as you are resting on your stock all should be very similar. Also, although you didn't ask. I have a Browning X-bolt that is an absolute tack driver that when I put on a suppressor after the initial 3.5 MOA Adjustment it won't group near as well as without the suppressor. That is not an issue with my Christensen w/ carbon barrel. I can only assume the can is throwing off the harmonics of the barrel.
 

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