Zero Check Following a Knock

Deermanagement

Well-Known Member
Just been watching a video from Cervus UK where from an enclosed high seat in Germany, a red calf was missed twice clean at 130m, following a successful shot the day before. "Maybe the scope was bumped", maybe it was, maybe it wasn't. It was a borrowed rifle left undoubtedly with someone else the night before?

Anyway, last week whilst out one evening, I made the wrong decision, choosing to wait by a gateway at one end of a field rather than sitting in what is probably my favourite seat at the other end. Mistake number one and the one that hurt was to lean my rifle, a Carbonwolf against a half round rail pinned from a post to the gate. Long story short, the rail was pinned in the centre only, resulting in a heavy fall for the rifle onto it's side, the windage turret of the 3-18x50 Z6i. It's not a light rifle and it went down heavy with a clatter, lightly scratching my LP titanium moderator on barbed wire as it fell.

Was I not happy, and after looking at it,trying to ascertain any damage and what to do for the next 1/2 hour, limit my range, retire etc., 2 prickets moved out of the wood and crossed some 70 yds in front of the seat I should have gone too. If I had gone there, I would have likely taken the 2 prickets and not scratched the mod :rolleyes: So staying on until the next morning, I went to check zero after dark at a 100 yrd, First shot just right, elevation spot on, adjusted 3 clicks left and the second was around 7mm left of centre, so left it there. Out next morning, no prickets offered a shot, only a Stag and a Fallow buck, both at close range, but not something I was looking to take. After stalking, I set up the quad to use the rack as a bench rest at 250 yds, with the light wind directly behind me. Result was spot on elevation, moving windage back 1 click. So after this fall, 2 clicks change was required, a good advert for optilocks and even an alloy Swarovski.

I remember 2 real bumps with an optilock mounted, steel Habicht Swarovski on a heavy barrelled Tikka, that only required a click or two on the one occasion. I'm not convinved the Z6i will take the same punishment the Habicht would take but at least it pleasantly surprised me.

Best rig for punishment....... steel mounts and steel scope 👍 And should a rifle loose zero under normal conditions, maybe taking light knocks? No it shouldn't. If it does move with anything less that hard knocks, there's something likely not quite right....... bedding, looses screws, dodgy scope or mounts :-|
 
The scope internals are held in place by the wind age and elevation screws and a spring.

That spring failed on my scope causing very inconsistent results over a year or two as I swapped rifles. Fortunately the manufacturer repaired it for free, thanks Swarovski.

That spare rifle zeroed that you have confidence in is invaluable as I take a few trips to the range to get confidence after any change to a rifle/load.
 
If all the screws are the right torque and you have a decent scope it will take a lot of punishment. I never check my zero unless I have reason to do so, e.g. shot placement isn't what I'd expect.

Sometimes I'm out morning and evening for days. Checking your zero before each outing isn't practical, it's costly and another opportunity to knock your rifle off zero.
 
A scope can cope with all the rigours of stalking, days on the hill, bouncing around in the back of a 4x4 and so on, and maintain a rock steady zero, season after season.
Yet the slightest bump, real or imagined, on the morning of the DSC1, is the reason why so many experienced stalkers fail that simple shooting test.
Funny, that.
 
A scope can cope with all the rigours of stalking, days on the hill, bouncing around in the back of a 4x4 and so on, and maintain a rock steady zero, season after season.
Yet the slightest bump, real or imagined, on the morning of the DSC1, is the reason why so many experienced stalkers fail that simple shooting test.
Funny, that.
Very easy test to fail. I think I was lucky that the gusty conditions conspired to cancel out my errors! Just lucky I guess.

David.
 
I check my zero before every trip, especially if I’m using a new batch of factory ammo. My Habicht is steady as a rock, my Z4i likewise but it’s a confidence thing.
Good in theory but many don't have the opportunity to check zero until they are om their stalking ground (and the lease may not permit zeroing) and at +£3 per round when you may only shoot a 13 kg roe deer every few visits this isn't really an attractive option.
 
I think those of us who passed at the first attempt on that day deserve additional recognition. Just some small token, such as a knighthood or something equally modest.
Rise sir Tim of Northwalesshire :lol:

To be fair if you used a medieval firearm such as a .270 then you do indeed deserve a prize ..even in calm conditions :lol:...actually...saying that I did my DSC1 with a .270 Sako 85 👍
 
Equipment has improved a lot in the last 30 years or so since the days of wooden stocks, nikko stirling scopes and mounts that frankly shouldn't be used on an air rifle. I remember every knock having an impact and adjusting scopes every time I zeroed! I havn't adjusted the clicks scope on my current rifle since 2021, every time I've checked its been bang on .
 
Equipment has improved a lot in the last 30 years or so since the days of wooden stocks, nikko stirling scopes and mounts that frankly shouldn't be used on an air rifle. I remember every knock having an impact and adjusting scopes every time I zeroed! I havn't adjusted the clicks scope on my current rifle since 2021, every time I've checked its been bang on .
👍 Fortunately, first rifle was and still owned is a Tikka M55 with optilocks and apart from early days where it was fitted with a Kasnnar Beta 3 4x32 scope, it has since been used with a steel Swarovski or a Z6i. All other rifles I've used have been steel optilocks, steel scopes or later Z6i's.

And as you have said, never a need to adjust, certainly since 2000 when I stopped using factory loads
 
Good in theory but many don't have the opportunity to check zero until they are om their stalking ground (and the lease may not permit zeroing) and at +£3 per round when you may only shoot a 13 kg roe deer every few visits this isn't really an attractive option.
You make a good point and it’s reinforced by the lack of access to gun ranges or suitable ground. I fire three to check zero as a wounded animal is the worst outcome for me. I don’t sell my deer, but for those that do, I would have thought shot placement would be the highest priority for minimal meat damage and a clean kill - well covered in recent threads across the SD. I wish more farmers would “diversify” and create ranges or paid access that we could pay to shoot on, but I recognise that’s not what farms are for and there are safety and insurance implications. It just might make deer control a bit more accessible and wider spread. Probably not a popular view, but there we are. I’m grateful for those that enable me to participate in our field sport.
 
A scope can cope with all the rigours of stalking, days on the hill, bouncing around in the back of a 4x4 and so on, and maintain a rock steady zero, season after season.
Yet the slightest bump, real or imagined, on the morning of the DSC1, is the reason why so many experienced stalkers fail that simple shooting test.
Funny, that.
I saw someone claim that the reason they shot a 4” group was because the dog’s tail had whacked the scope when he was getting it out of the cabinet…
 
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