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04-10-2024, 07:25 PM
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Join Date: Mar 2013
Location: Cluny AB
Posts: 329
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Need help, sighting in and scope problems.
So got my new/old rifle today a zastava LKm70 in 6.5x55 se mounted up a old bushnell banner scope 3x x9 40 and got set up, took a shot at 48 yrds just see were I was hitting on paper I hit 10 inchs low but windage was good. so I clicked up, and could only do 8 clicks and scope was maxed on elevation. so I took another shot was 8 inchs low, now im confused but figured I'd take a few more shots, nice tight group all 8 inchs low. I had 4 rounds left so I walked my target out to 95 yrds and took a shot it hit dead bang center of the red, ..I HAD NOT TOUCHED SCOPE SETTING.. remeber was hitting g 8 inchs low at 48 yrds and now it's dead on at 95 yrds. can any one explain why ?? it should been much lower at 100 if it was low at 48 right ? iv never had a scope do this to me. at 48 it should been a bit high really high with scope maxed on elevation right ? is it front base is to high or rear is to low? bases are ones I got with it. the last owner is no longer with us so I can't even ask him ,, any ideas would be helpfull. groups great though. so there is that..
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04-10-2024, 07:51 PM
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Join Date: Dec 2008
Location: Camrose
Posts: 45,481
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That makes absolutely no sense at all. With a scope mounted say 2" above the bore, basic geometry says that 8" low at 48 yards should put you much lower at 95 yards. The only possible explanations that I can come up with, is that either the scope mechanism suddenly shifted for the last shot, or it's how you are resting the rifle when shooting. If you rested the barrel on a hard surface for the last shot, the harmonics can cause the barrel to jump away from the rest. Some oddball things can also happen if you lock the rifle into a gun vice or lead sled that prevents normal recoil.
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Only accurate guns are interesting.
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04-10-2024, 08:59 PM
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Join Date: Mar 2013
Location: Cluny AB
Posts: 329
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makes zero sence to me also. I was shooting off hand, and my groups were tight at both ranges. I agree should been much much lower at 95 yrds. maybe a scope shift or something internally. maybe I'll put it away till end of month and get new bases,rings and a scope, if problems prosist I'll have take it back in to the Smith I quess.
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04-10-2024, 09:58 PM
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Join Date: Jun 2007
Location: Ft. McMurray
Posts: 38,672
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The scope erector may not have reset inside the scope right away, then jumped with the shots at the longer range.
Cat
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Anytime I figure I've got this long range thing figured out, I just strap into the sling and irons and remind myself that I don't!
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04-10-2024, 11:53 PM
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Join Date: May 2007
Location: WMU 303
Posts: 8,508
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Quote:
Originally Posted by mrcrossbow
makes zero sence to me also. I was shooting off hand, and my groups were tight at both ranges. I agree should been much much lower at 95 yrds. maybe a scope shift or something internally. maybe I'll put it away till end of month and get new bases,rings and a scope, if problems prosist I'll have take it back in to the Smith I quess.
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You can't zero a scope shooting offhand. I'm not saying that is the problem but any time you are zeroing a scope... use a proper bench rest.
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04-11-2024, 09:29 PM
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Join Date: Mar 2013
Location: Cluny AB
Posts: 329
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you were right Todd, I swapped on a 4x fixed power scope I think from 1974 I had tucked away and went back out and shooting lights out now. zero problems. tossed the ""broken "" one on a wall hanger to complete its looks so to speak. I did try tossing it on a different rifle same problems , so definitely the scope
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04-11-2024, 09:36 PM
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Join Date: Dec 2008
Location: Camrose
Posts: 45,481
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Quote:
Originally Posted by mrcrossbow
you were right Todd, I swapped on a 4x fixed power scope I think from 1974 I had tucked away and went back out and shooting lights out now. zero problems. tossed the ""broken "" one on a wall hanger to complete its looks so to speak. I did try tossing it on a different rifle same problems , so definitely the scope
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It can be very frustrating when an erector sticks, then suddenly jumps. I have seen it several times over the years, most recently on a friends Vortex.
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Only accurate guns are interesting.
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04-11-2024, 09:50 PM
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Join Date: Oct 2009
Location: Medicine Hat
Posts: 4,296
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Send it back to Bushnell they will send you a shiny new one.
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Trades I would interested in:
- Sightron rifle scopes, 4.5x14x42mm or 4x16x42mm
especially! with the HHR reticle. (no duplex pls.)
- older 6x fixed scopes with fine X or target dot.
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04-12-2024, 09:40 AM
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Moderator
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Join Date: Jul 2008
Location: A bit North o' Center...
Posts: 11,277
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Quote:
Originally Posted by 6.5 shooter
Send it back to Bushnell they will send you a shiny new one.
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This.
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04-12-2024, 10:15 AM
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Join Date: Mar 2013
Location: Cluny AB
Posts: 329
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even on a 25ish year old scope? If that's the case I'll mail it to them. as i did like the scope.
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Carpe Diem.
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04-12-2024, 10:28 AM
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Moderator
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Join Date: Jul 2008
Location: A bit North o' Center...
Posts: 11,277
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Quote:
Originally Posted by mrcrossbow
even on a 25ish year old scope? If that's the case I'll mail it to them. as i did like the scope.
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Definitely worth a try.
A couple of years ago I sent in my Bausch & Lomb scope to Bushnell for repair (the scope was purchased before Bushnell bought out B&L).
They weren’t able to fix it, so they sent me a new Bushnell scope.
I’m impressed.
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04-12-2024, 09:09 PM
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Join Date: Oct 2009
Location: Medicine Hat
Posts: 4,296
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Quote:
Originally Posted by stinky buffalo
definitely worth a try.
A couple of years ago i sent in my bausch & lomb scope to bushnell for repair (the scope was purchased before bushnell bought out b&l).
They weren’t able to fix it, so they sent me a new bushnell scope.
I’m impressed.
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^^ truth ^^
__________________
Trades I would interested in:
- Sightron rifle scopes, 4.5x14x42mm or 4x16x42mm
especially! with the HHR reticle. (no duplex pls.)
- older 6x fixed scopes with fine X or target dot.
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04-12-2024, 10:09 PM
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Join Date: Dec 2008
Location: Near Edmonton
Posts: 15,305
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Quote:
Originally Posted by Stinky Buffalo
Definitely worth a try.
A couple of years ago I sent in my Bausch & Lomb scope to Bushnell for repair (the scope was purchased before Bushnell bought out B&L).
They weren’t able to fix it, so they sent me a new Bushnell scope.
I’m impressed.
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Spot on. Sent a 3/4" scope off a 22 in for repair. They no longer make them and cant fix them. Scope was at least 50 years old. They sent me a brand new high end Elite worth about 500 bucks to replace a scope that probably cost 5 bucks new, and maybe 60 bucks if you can find one today. Tasco still sells them, 17 bucks at Walmart.
https://www.walmart.com/ip/Tasco-Rim...-Tube/47487535
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