It seems that on most of my guns, I'll have it sighted in at a certain distance with a certain pellet but the next time I take it out the POI will have shifted from 1/2" to 2" at 25 yards. Could this be a trait of cheap scopes? I have always economized when it comes to buying scopes. The most I have paid is about $125 with most about half that amount. I guess I've been afraid if I ever bought a really good, ie. expensive, scope I would be spoiled and would no longer be happy with my cheap scopes. If the POI shift is due to my cheap scopes, what would be a good scope for say under $200? Almost all my shooting is 50 yards and less.
POI Shift - gun or scope?
- Thread starter BassMan
- Start date
My yard is about the same.
What gun are you shooting and which projectiles?
UTG BugBuster on my HW35 meets all my needs. The only downside is me.
Always good scopes here in the classifieds.
What gun are you shooting and which projectiles?
UTG BugBuster on my HW35 meets all my needs. The only downside is me.
Always good scopes here in the classifieds.
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Could be different reasons for each gun. Many cheap scope work well. Are you talking springers or pcp?
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For my powder burners, the scope / mounts are the first thing I would suspect. On airguns, it has almost always been the complicated barrel / shroud combination that causes POI shifts for me. It has RARELY been the scope. My FX Impact was the worst of all my airguns. My lowly Notos still holds the top spot for holding POI, even when hauling it around in my car in a soft case.
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Is it a 2nd focal plane scope and are you using the same magnification you zeroed with if so?
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I'm just wingin' it here. If your guns have long barrels hanging out, unsupported along the entire length of the barrel, then it's a droopy barrel. It's more droopy as the temperature rises and less droopy when the temperature cools down. That's to be expected I think. Scopes are also affected by temperature -- good ones not as much, I guess. But I wouldn't jump on the "I need a new scope" bandwagon until determining if the POI shift due to temperature changes is perfectly normal.
stovepipe
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I have used UTG BugBuster's on a couple of springers and found them quite adequate even out to 50 yrds and beyond.
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I dunno why there isnt a sticky on shimming but airguns tend to need about 20moa more up. If you loosen your elevation screw all the way to achieve this then you relieved all the spring tension and your scope is going to get sloppy.
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I hate the Notos because the rail is parallel and even if you buy the right adjustable rings on the first try it costs half as much as the gun. Cheaper better rifles exist where you dont need to dump $150 extra to add a scope and bipod.
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Thanks for the replys! The shift seems to happen on both my springers and pcps. Most recently it has happened on my Benjamin Cayden (which is a really nice shooting gun) and on a couple of my Airforce Condors. I know the Condors are very hold sensitive but the latest shift was almost 2" right at 25 yards. All my scopes are AO. The shifts are not just vertical.
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when I adjusted my trigger ,which changed the breaking point,my point of aim changed ,which shows me my trigger techquie needs refinement.I will just adjust my scope
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I don't suppose you use the same moderator for all of these? I was suspecting clipping. I had that happen after I bought a mod here. But put it on a different gun and it was fine. Not sure what the issue is with yours? Have you checked your mounting screws for tightness?
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Hi BassMan. Sorry to sound like a Nazi interrogator, but the forum members only know what you tell us. So far we know you have multiple guns, some springers and some PCP's -- specific guns unknown. Sounds like you have multiple scopes too, all cheap -- and unknown. We don't know if you swap scopes between guns. You have a POI shift with ALL of your guns. We don't know if you use a bubble level to make sure you're not canting the rifles or if the levels are not tight enough or if your scopes are not tight enough. The list of questions that need to be answered in order to nail down the problem is a long list. I know this is a real downer post, but good detective work is needed. Perhaps if you concentrate on one specific gun and the specifics of it and it's problems and the history of the scope on it (like was it ever used on a scope-destoying springer?). Not trying to bum you out or get you to give up on the forum members for help. So let's start with one specific rifle and full disclosure of what's on it.
stovepipe
Edit: You did mention some specific guns. I apologize for not acknowleging that. But we still need to know more -- like I said.
Another edit: I mis-spoke when I said that you had the POI shift on ALL of your guns. You said MOST not all. Sorry for my mis-quote.
stovepipe
Edit: You did mention some specific guns. I apologize for not acknowleging that. But we still need to know more -- like I said.
Another edit: I mis-spoke when I said that you had the POI shift on ALL of your guns. You said MOST not all. Sorry for my mis-quote.
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