Scope sighting in help needed

A

Adam F85

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Surrey, BC
Fellow Gunnutz,
I had a horrible trip to the range this weekend attempting to sight in my new-to-me Carl Gustaf Swedish Mauser in 6.5x55. It has a Burris Fullfield II on it w/ ballistic plex. The mounts and rings I believe are Weaver but I am not sure as they were on the rifle when it arrived.

I had a local gun shop mount the scope for me. Where the mounted, leveled and bore sighted....apparently

I took it out to the range to sight it in at 1" high at 100yards but I wasnt even hitting paper :eek:

I adjusted my windage and elevation 1 click per 1/4" until I was hitting. I adjusted more from there but every shot went somewhere totally different. I was shooting from a bench with a rest.

I to a closer look and realized the scope was one degree off towards one o'clock. I am also wondering if the gun shop used loc-tite and checked to see if my mounts were tight, etc. The ring screws were tight.

Anybody have any advice....am I doing something wrong?

TIA
 
You are right to be concerend about the base screws. They MUST be blue LocTited.

You won't screw anythign up by slacking off the big nuts and taking the scope off the base. Then undo one of the base mount screws and see if it was LokTited. If not, do it now.

Then put the scope back on and tighten the two big screws. Don't over-tighten. The screw can be broken.

Slack off the scope hold down screws, rotate the scope until it is vertical, and while sitting at the table, adjust the scope fore and aft to give you the corect sght picture - eye relief. This varies from person to person, so you need to do this for yourself. then tighten the screws evenly. Don't over tighten. I don't LokTite these screws.

Shooting. As the rifle warms up, the group might shift, so chasing the groups around the paper with sight adjustments does not help.

Fire 3 shots. This will give you an idea of how big a group it shoots, and where it shoots.

Walk down to the target, circle the group, and note how much of a sight change is called for. if you don't have a real big target, staple up a newspaper, as a backer, in case your first 3 shots are off the target.

Your third group should be very close to where you want it. make sure the barrel cools between groups.
 
Ganderite said:
You are right to be concerend about the base screws. They MUST be blue LocTited.

You won't screw anythign up by slacking off the big nuts and taking the scope off the base. Then undo one of the base mount screws and see if it was LokTited. If not, do it now.

Then put the scope back on and tighten the two big screws. Don't over-tighten. The screw can be broken.

Slack off the scope hold down screws, rotate the scope until it is vertical, and while sitting at the table, adjust the scope fore and aft to give you the corect sght picture - eye relief. This varies from person to person, so you need to do this for yourself. then tighten the screws evenly. Don't over tighten. I don't LokTite these screws.

Shooting. As the rifle warms up, the group might shift, so chasing the groups around the paper with sight adjustments does not help.

Fire 3 shots. This will give you an idea of how big a group it shoots, and where it shoots.

Walk down to the target, circle the group, and note how much of a sight change is called for. if you don't have a real big target, staple up a newspaper, as a backer, in case your first 3 shots are off the target.

Your third group should be very close to where you want it. make sure the barrel cools between groups.
Click to expand...

Thank you, I will buy some Loc-Tite and attempt this right away. I hope it fixes the problem. I didnt think it was the rifle because they are known to be be quality rifles, and the scope itself gets good reviews for an entry level scope. It must not be mounted securely or level.

I did run a box through it, but was sure to let it cool between groups. The 20 shots I fired were within 3 hours....although I know thats too much still. I thought it would be a breeze and ended up going through a box of Nosler Accubond's :HR::HR: ....boy was I wrong
 
i don't know about burris but i had a bushnell on my 303 it was mounted correctly but i was all over the target it turns out that the scope could not handle the recoil
 
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