Scope Issue-Need Help/Advice

So went out to sight in my Weaver Super Slam 3x15x50 and managed to get it dialed in at 25yds. As soon as 100yds, my shots were all over the place. Never even hit the bullseye. Breathing was good, same for trigger pull. I put over 40 rounds on my .270 and even had 2 other gentlemen look and it and fire it as well. Adjusted to each shot per
the scope info. Most were high right and high left then went to very low. I don’t believe it’s the gun since my previous scope in this gun worked fine and had a great 1" grouping at 100yds. Any thoughts or ideas?

Thank you,

Micah

Are the mounting screws good and tight? Kind of sounds like the scope is loose!

It was 94 degrees here today, did You let the barrel cool between shots? Is the scope mounted and torqued in the rings correctly? What type of ammo?

Break it down and remount it using the proper torque on bases and ring screws. Take a dollar bill and slide it down the barrel to the action, if it hits resistance on the way, more than likely you found your culprit. Make sure you set the screws in the rings a little at a time as well alternating from to rear and side to side in an X pattern. If the gun has a thin or sporter weight barrel, let it cool between shots, those thin barrels heat up quickly. Last but not least, clean the gun. I’m not talking about a few patches with some Hoppes, clean it thoroughly. It takes 30-45 minutes to scrub an clean a really fouled barrel. I like the Gunslick foaming bore cleaner, a nylon brush then patches. Repeat until there is nothing there. Fire a fouling shot or three, the rezero the gun. If you’ve done all that and still have an issue, it could be a defective scope. Finally, check your action screws, if it is a Savage, they like about 5# more torque on the front than the rear. Remington and Winchester like equal torque and Browning X and A Bolts should just be sold to the next poor schmuck that believes they are worth any money.

Cranking the turrets left/right and up/down won’t fix anything if all the above isn’t right.

Mark
Pioneer 222 Sportfish Yamaha F300
Yeah, but do you consider a dog to be a filthy animal? I wouldn’t go so far as to call a dog filthy but they’re definitely dirty. But, a dog’s got personality. Personality goes a long way.

“Life’s tough…It’s even tougher if you’re stupid” John Wayne

Gotta go with saltydog235 on this one!

Good advice from Saltydog.

I’m going to ask for some too, along the same topic,if you don’t mind the hijack.

quote:
Finally, check your action screws, if it is a Savage, they like about 5# more torque on the front than the rear. Remington and Winchester like equal torque and Browning X and A Bolts should just be sold to the next poor schmuck that believes they are worth any money.

Salty, or anyone else who knows, do you have a recommendation for a good inch/pound torque wrench suitable for gun smithing that will work with common, phillips and allen head screws? I need one.

Capt. Larry Teuton
Swamp Worshiper

http://www.brownells.com/gunsmith-tools-supplies/general-gunsmith-tools/wrenches/general-wrenches/1-to-75-inch-pound-variable-torque-wrench-prod18221.aspx

http://www.weaveroptics.com/gun_smithing_tools/torque_wrench/

I have the Weaver set, it’s a solid unit that won’t break the bank. Wheeler makes a good one too. If you like spending money Nightforce makes one that is badass.

Mark
Pioneer 222 Sportfish Yamaha F300
Yeah, but do you consider a dog to be a filthy animal? I wouldn’t go so far as to call a dog filthy but they’re definitely dirty. But, a dog’s got personality. Personality goes a long way.

“Life’s tough…It’s even tougher if you’re stupid” John Wayne

I can vouch for the wheeler fat wrench, does a great job.

salty is on target. If anything is touching the barrel it will mess up the barrel harmonics and throw shots all over.

Thank you all for the replies. I’ll look at those and order one today.

Capt. Larry Teuton
Swamp Worshiper

Check this one out too, Larry. A very decent torque wrench, AND some levels and lapping rods if you’re so inclined to want to lap your rings in.

https://smile.amazon.com/Wheeler-Scope-Mounting-Combo-1-Inch/dp/B002PQKGSI/ref=smi_se_mit_rcol_smi_2537928482?_encoding=UTF8&Version=1&entries=0&pldnCmp=rcol&pldnCrt=my-impact

Salty nailed it. Adjustments on the scope don’t matter a lick if all the equipment isn’t installed properly.

Wadmalaw native
16’ Bentz-Craft Flats Boat

quote:
Originally posted by salty849

It was 94 degrees here today, did You let the barrel cool between shots? Is the scope mounted and torqued in the rings correctly? What type of ammo?


I did let the gun cool down between shots, about every 3 rounds or so. Then I also had Atlantic Game and Tackle mount my scope and bore sight it (I bore sighted it at the range to make sure for myself) And the ammo was a mix of Remimgton Core-Lokt and Federal. Thanks for the help!

There is no substitute for hard work-Thomas A Edison

quote:
Originally posted by saltydog235

Break it down and remount it using the proper torque on bases and ring screws. Take a dollar bill and slide it down the barrel to the action, if it hits resistance on the way, more than likely you found your culprit. Make sure you set the screws in the rings a little at a time as well alternating from to rear and side to side in an X pattern. If the gun has a thin or sporter weight barrel, let it cool between shots, those thin barrels heat up quickly. Last but not least, clean the gun. I’m not talking about a few patches with some Hoppes, clean it thoroughly. It takes 30-45 minutes to scrub an clean a really fouled barrel. I like the Gunslick foaming bore cleaner, a nylon brush then patches. Repeat until there is nothing there. Fire a fouling shot or three, the rezero the gun. If you’ve done all that and still have an issue, it could be a defective scope. Finally, check your action screws, if it is a Savage, they like about 5# more torque on the front than the rear. Remington and Winchester like equal torque and Browning X and A Bolts should just be sold to the next poor schmuck that believes they are worth any money.

Cranking the turrets left/right and up/down won’t fix anything if all the above isn’t right.

Mark
Pioneer 222 Sportfish Yamaha F300
Yeah, but do you consider a dog to be a filthy animal? I wouldn’t go so far as to call a dog filthy but they’re definitely dirty. But, a dog’s got personality. Personality goes a long way.

“Life’s tough…It’s even tougher if you’re stupid” John Wayne


Hey sir, so I had a gun shop mount the scope, but I bore sighted it anyways. It’s a Ruger American with Weaver Rings and was throughly cleaned for about 30mins before the range. (No grime or powder residue anywhere by the time I was done) When you mean

quote:
Originally posted by Cracker Larry

Good advice from Saltydog.

I’m going to ask for some too, along the same topic,if you don’t mind the hijack.

quote:
Finally, check your action screws, if it is a Savage, they like about 5# more torque on the front than the rear. Remington and Winchester like equal torque and Browning X and A Bolts should just be sold to the next poor schmuck that believes they are worth any money.

Salty, or anyone else who knows, do you have a recommendation for a good inch/pound torque wrench suitable for gun smithing that will work with common, phillips and allen head screws? I need one.

Capt. Larry Teuton
Swamp Worshiper


Not at all sir! Be my guest!

There is no substitute for hard work-Thomas A Edison

Pick one round and stay with it when sighting in! Every different MFG round will have different ballistics and hit differently! If you switch rounds after sighting in, you will have to check and adjust the gun again!

quote:
Pick one round and stay with it when sighting in! Every different MFG round will have different ballistics and hit differently! If you switch rounds after sighting in, you will have to check and adjust the gun again

That is a fact! With any rifle or pistol. We like to shoot a lot as a family and I usually buy ammo in 1,000 round cases, whatever I find the cheapest online usually[:I] Most of it is Russian or Israeli surplus stuff and every brand shoots considerably different. But I’m not shooting competitively and don’t need or expect 1 MOA groups. 1 MO man, or 1 MO coyote is close enough for me :smiley:

Capt. Larry Teuton
Swamp Worshiper

I had a Remington 700 that would NOT shoot that Core-Lokt stuff worth a (**()!

What Federal ammo were you using?

I always suggest buying a few boxes of different ammo you would be willing to hunt with. Sight rifle in with some random ammo, then shoot a 3 or 5 shot group with each ammo and decide which one groups better and go from there. Just be sure you’re using ammo that you would or could hunt with.

Did both the Federal and the Core-Lokt shoot all over? Like first shot core-lokt low left, second high right, third low left?

Wadmalaw native
16’ Bentz-Craft Flats Boat

quote:
Originally posted by Easy

Pick one round and stay with it when sighting in! Every different MFG round will have different ballistics and hit differently! If you switch rounds after sighting in, you will have to check and adjust the gun again!


Well I would got through roughly a box of different ammo and each time they wouldn’t be accurate. None were going where I aimed the scope. That’s why I’m guessing there is something with the scope.

There is no substitute for hard work-Thomas A Edison

quote:
Originally posted by leadenwahboy

I had a Remington 700 that would NOT shoot that Core-Lokt stuff worth a (**()!

What Federal ammo were you using?

I always suggest buying a few boxes of different ammo you would be willing to hunt with. Sight rifle in with some random ammo, then shoot a 3 or 5 shot group with each ammo and decide which one groups better and go from there. Just be sure you’re using ammo that you would or could hunt with.

Did both the Federal and the Core-Lokt shoot all over? Like first shot core-lokt low left, second high right, third low left?

Wadmalaw native
16’ Bentz-Craft Flats Boat


I was shooting the federal fusion ammo and another type of federal (blue box-forgot what brand it was). And yes those rounds were doing exactly what you said. Extremely high right, high left then low etc…very frustrating

There is no substitute for hard work-Thomas A Edison