Cold Bore shot way off

[nrpate05]

Hey all, thought I’d throw this out to the pros on here. The last couple times I’ve shot my 25-06, the first cold bore shot is way off. In the picture below you’ll see what I mean. The subsequent shots are decent and are grouping how this rifle usually groups. Curious what’s going on. Point of aim is the lower left corner of the red square. My internet research says a bedding issue? Thought??

 

[elkantlers]

Is the cold bore with a clean barrel?

 

[Jnasa]

How long has this been happening? Approximately how many rounds have been fired?

If you shoot a second group is the first shot drastically off as well?

As Elk Antlers asked is it a clean bore each time?

 

[D4570]

I have a Marlin 4570, an actual Marlin. Anyway, the first shot cold is always 5" high, but only when cold. It's perfectly straight up and down 5".I tried everything, multiple loads and bullets. Clean fouled everything. Nothing helped. It's a lever gun, so bedding is not an issue. What I did was sight it in to the first shot; it takes all day to sight in, shoot, let cool for two hours, and shoot again. It will shoot a cloverleaf group with the first shots and a cloverleaf after that, but 5" low. These are not low-velocity lead bullets; they're 300 gr Hornady 2500 fps loads. Seldom do I need more than one shot, but if I do, I have to aim 5" higher. It's not a big deal if I keep the shots around 200 yards.

 

[Huntmt28]

You are 3/4in to the left......and the same high??? Is this intentional? Hard to say they are all off if it isn't hitting where it is supposed to be sighted in at?? Looks like about 1in group total. Move it to the center aim at the center and see what it does.

 

[Jack Ryan]

Stop cleaning it until hunting season is over. Clean it ONCE, polish it, then shoot it with out any adjustments until the POI stops moving.

Now shoot ONE. Compensate for that impact, wait 10 minutes and shoot another one.