Newby needs help with Rem 700 and AAC Cyclone

[egraham]

I just got my AAC Cylcone last week for my whisper.

Gun is a Remington 700 with 16.5 douglas barrel. Before I got the cyclone, the gun would shoot a ragged hole at 100 yards using 208 grain amax's and AA#9 at 1040 fps.

I put the can on today and shot it on paper and the groups were horrible. 1-2 inches was best and 3-5 was average.

No baffle strikes, can screws on tight with no woble.

Can anybody help me out with any ideas?

Thanks

[skurvy]

barrel resonance changed with the added weight and length.
Work your load up again.

[egraham]

Skurvy:

Thanks. Would a shim between the barrel and the stock help? The barrel is completely freefloated.

Thanks

Emris

[skurvy]

Adding a pressure point between the barrel and stock would possibly help, but I would use it as a last resort. Even then it's not a hard cut science. You would have to experiment with the location and amount of pressure. My first step would be trying a different load. Different bullet or a powder with a different burn rate will change barrel resonance.

Adding a pressure point is easy to try at the range though. All it takes is a business card.
Be sure your action screws are tight. If you ever remove the stock be sure you're consistent with the amount of torque you use to tighten the screws.

[egraham]

Thanks for your help.

[skurvy]

You're welcome. Keep us posted on your results.

[Fudmottin]

Are you using a bipod or bench rest? There is a good chance that the extra weight of the can is making the barrel bounce off the stock. The aluminum bedding block in the HS Precision stocks used on the 700VS and 700P does not extend all the way to the bipod or sling stud. And the stock does deflect quite a bit.

It is a time consuming process, but what I did to solve that issue so the barrel would remain fully floated was to hone out the stock in front of the bedding block using 80 grit sandpaper. It's quite messy and requires attention to detail.

You want to be able to slide a fresh dollar bill between the barrel and stock all the way to the chamber area with the can on and while the rifle is on a bipod or rest.

[egraham]

Thanks.

We checked that as well. You could slide a business card between the barrel and the stock all the way to the bedding block with the can and bipod on.

I left it with my gunsmith who customizes remington rifles. I know he is good because I have seen his work. I loaded him 100 rounds of ammo so hopefully he will be able to fix it.