Please help!! (Again) Groups dropped all of a sudden.

bergara0256 said:

Do you have a chrono to look a velocity? Are you shooting factory ammo? If so did you change lots? Or are you hand loading?

The reason for all the questions, generally vertical change is high or lower is a change in velocity.

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BHINES1216 said:

Shooting a Remington 700 .308 w/ Vortex Crossfire II 6-18 x 44. On my final sight in before a hunting trip to Nebraska, my groups dropped off all of a sudden. Red was my first group on the left bullseye, then after adjusting 1-click right, i shot the green group at the bullseye on the right. Then I shot the two shots in the purple group at the bullseye on the left. Shots were at 100 yards. Waiting about 5-10 min between groups. I am trying to shoot 2" high at 100 yards.

Why would this happen??
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LRNut said:

Did you check your action and scope screws? Are you by chance at the far end of either elevation or windage adjustment?

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BHINES1216 said:

Shooting a Remington 700 .308 w/ Vortex Crossfire II 6-18 x 44. On my final sight in before a hunting trip to Nebraska, my groups dropped off all of a sudden. Red was my first group on the left bullseye, then after adjusting 1-click right, i shot the green group at the bullseye on the right. Then I shot the two shots in the purple group at the bullseye on the left. Shots were at 100 yards. Waiting about 5-10 min between groups. I am trying to shoot 2" high at 100 yards.

Note: Shot all shells out of the same box. Factory loads. Chronograph was at 2743.

***One more very important note and wouldnt be surprised if this caused my issue... the shot to the right of the right bullseye was shot from and unstrapped/unweighted lead sled. Shot between red and green groups. I immediately ditched the sled. Could this have caused my issue? If so, what would it have done and what can I do from here?

Why would this happen??
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crazymonkey said:

The sled and strapping your gun down is more than likely your issue as the shot closer to the bullseye is the one you fired not strapped down or in the sled . Those things reak havoc on your accuracy and your rifle . It puts all the recoil into the stock and your scope . Plenty of videos of broken stocks from using them and the shock to the scope is usually more than they can handle. Shoot a group off a rest ,sand bag or whatever you'd use in a real world hunting situation and you will probably see your groups get better . Factory ammo is usually not consistent with muzzle velocity as they are not loaded to the same standards as most hand loaders run to but should be closer to what you'd expect for a hunting type gun usually sub one moa or better.

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WA Coyote said:

I've seen one shot in a lead sled from a .270 break a much more durable scope than a Vortex Crossfire.

I'd put a different scope on it (and check all screws in the process) and see if that fixes the issue.

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Shane Lindsey said:

Does your scope have a parallax adjustment on the side/front?

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