Scope Zero Check Thread

[1000yards]

That is what is known as the Leupold shuffle.
First shot shows no apparent movement until recoil moves the erector, then it shuffles to its final position which often isn’t where it ought to go.
A scope that hasn’t been dialed much is far more likely to do this, the turrets need to get a little bit of use on them to work more accurately.

Usually if you only want to move a click or so it pays to dial 10 up then back down the 8 or 9 required so the final movement is compressing the erector spring, not relieving pressure on it.

I thought I wouldn't have that issue with a Trijicon. But it is brand new, less than 100 rounds, and I've only dialed a couple times.

 

[mxgsfmdpx]

I believe there was a test on here that barrle heat causes about a 1-2 10ths of a MOA in group growth...so from a 1.2moa to a 1.3/4moa.

This depends on barrel make, quality/type of steel, rifling process, barrel to action torque, head spacing, and whether proper stress relieving was done. Rugers, generally speaking, can be more affected by heat than others. But not at the minimal shooting he is doing here.

Clean barrel does change things.

Yeah man. Leave the barrel alone. Running patches through barrels before and after shooting isn’t the way. Unless you are in extreme climate going months between shooting days.

The tape...never heard of using it.

I have a similar issue I have not gone back to proof out.

Same. I’d remove the tape and properly install.

 

[Castle Rock]

I thought I wouldn't have that issue with a Trijicon. But it is brand new, less than 100 rounds, and I've only dialed a couple times.

Crank them back and forward end to end a few times, they will improve or fail completely, either is a good result, there is nothing worse than not having confidence in your gear.

 

[mxgsfmdpx]

@Justin Crossley are you okay with this being a diagnostic thread to help folks out or would you rather them post the zero check results here and then link a separate thread for folks to go to and help diagnose potential issues?

 

[1000yards]

This depends on barrel make, quality/type of steel, rifling process, barrel to action torque, head spacing, and whether proper stress relieving was done. Rugers, generally speaking, can be more affected by heat than others. But not at the minimal shooting he is doing here.

Yeah man. Leave the barrel alone. Running patches through barrels before and after shooting isn’t the way. Unless you are in extreme climate going months between shooting days.

Same. I’d remove the tape and properly install.

I appreciate the advice. I'll try all of that plus spinning the dials around. Leaving the bore dry will be a good experiment: about 1/3 of the property is salt marsh that borders the ocean and a fellas teeth will rust if he talks too much.

 

[Castle Rock]

Leaving the bore dry will be a good experiment: about 1/3 of the property is salt marsh that borders the ocean and a fellas teeth will rust if he talks too much.

You will regret that real quick.

 

[Q_Sertorius]

I appreciate the advice. I'll try all of that plus spinning the dials around. Leaving the bore dry will be a good experiment: about 1/3 of the property is salt marsh that borders the ocean and a fellas teeth will rust if he talks too much.

Living where you do, I would definitely run an oil patch through the bore unless you are shooting the rifle at least once a week.

A lot of the advice I see about “you don’t need to clean your rifles” is only true if you shoot regularly and live in a fairly dry climate. In a wet climate, like the southeastern United States, the humidity can cause pitting in your barrel where it gets on the copper deposits in your barrel.


____________________
“Keep on keepin’ on…”

 

[270quest]

My .22 heavy barrel that I carry around to shoot grouse. Has a Burris FFII 3-9x40. Bottom group is with 36 gr Remington. Top group is 10 shots with 45 grain subsonic. Out to 30-40 yards should shoot the head off of the grouse.

 

[Jordan Smith]

Living where you do, I would definitely run an oil patch through the bore unless you are shooting the rifle at least once a week.

A lot of the advice I see about “you don’t need to clean your rifles” is only true if you shoot regularly and live in a fairly dry climate. In a wet climate, like the southeastern United States, the humidity can cause pitting in your barrel where it gets on the copper deposits in your barrel.


____________________
“Keep on keepin’ on…”

DBC is the way.

 

[Castle Rock]

DBC is the way.

I have tried to get that here but it was basically impossible.
I am pretty doubtful that it will protect against galvanic corrosion in a salt rich humid environment though.

 

[Jordan Smith]

I have tried to get that here but it was basically impossible.
I am pretty doubtful that it will protect against galvanic corrosion in a salt rich humid environment though.

It protected a friend's rifle bore in the basement of a housefire. Everything metal in that basement looked like it had spent 100 years in Davey Jones' locker, with built-up rust and corrosion, and difficult to remove. A patch through the bore, and it was back to being pristine.

 

[nephewjephew]

Managed to get some Black HIlls for the .223 to use this year to hunt with. 150rds of the same lot.
Tikka t3x .223, Rokstock, Maven 1.2, scythe

first 20


adjusted .2 up and .3 left 10rds

adjusted .1 down and .1 left 10rds

Slipped turrets, was happy and called it a day.
Next day 10rds

Center of group or POI is .1 to the left. Normal? Concerning? @Formidilosus. Will keep this updated as fall moves along

For the 223 people out there the ADI 69gr stuff has been grouping great for practice ammo

.1 low and .2/.3 left of the BH zero.

 

[wapitibob]

Drove 30 minutes to the range and shot 2ea at 400 and 600.

 

[Harvey_NW]

Tikka 6.5 PRC - 143 ELD-X hand loads.
Trijicon Credo HX 4-16x50
UM rings
AG Alpine hunter skim bedded
Assembled and torqued per Forms instructions.

Checked zero today, last zero adjustment was in December after adjusting powder charge to back off pressure with formed brass. POI shifted right a bit with the lesser charge, I recall giving it 2 clicks left and fussing with the turret cap while setting it back to 0 and questioning if I had given it an extra click. This was the zero confirmation group that day after setting turret.
View attachment 890580

Gun has ridden around in the truck and been tossed around moving stands while coyote hunting a few times since. This was today, 5 shots pretty much as fast as I could settle in and break because it's hotter than hell in the desert. Prone off Spartan bipod as I would be hunting.
View attachment 890585

Looks like I may have given it an extra click. I gave it one click right and reset the cap assuring it didn't move, and will verify again before the cold bore challenge.

But for all intents and purposes and based on sample sizes and past groups, no zero shift.

Assembled and zeroed a rifle for a buddy this weekend so I checked zero on mine too, and make sure the new lot of bullets fly the same. Since last check I participated in the CBC, which is a 60 mile round trip (×4) to my shooting spot, a few miles of it being washboard FS rd.

No shift. I don't mind being a click left for spin drift.

 

[Nine Banger]

This 223 has been in the bed of the truck in a soft case since June. That's probably 6000 miles and we live 1 mile down a dirt road.

White-tailed deer doe season opens tomorrow at dawn and I have to shoot HORSE this week.

Ya'll get on it...scores are due Saturday:

B

Thread '100 yard game of HORSE'

Jul 1, 2025

Utilize NRA B-8 target at 100 yards for all scenarios

Jump in at anytime and join the current month.

One scenario per letter of HORSE to be set by high scorer for the previous month, so 5 scenarios per month. It'll be more like reverse HORSE, if you win for the month you get a letter, keep track of your letters at top of each months post. I will commit to buying first person to spell HORSE (win five months) a T-shirt ( in a size of their choosing, a design of my choosing) to commemorate their prowess. Send me a direct message if you win.

Starting fresh on the 1st and ending on the 20th...

• Bluumoon
• Replies: 160
• Forum: Firearms

• 

The rolled up condom is from the case. I've been unzipping it from the back and shoving the rifle in it. First time that's happened (that's what he said).




It's been boringly reliable since I took it apart and added recoil pins in early June.

1.5 MOA groups and reliable hits out to 600. Zero'd to 77gr Razor Core (smk).

I was shooting daily until a few weeks ago.

I mashed it with the bed slide on Friday.

Set up today. I used my bino harness as a rear.

Absolutely no wind.



I noticed the elevation turret had spun when I went into the gun. This happens a lot with the Maven. Beware.

I shot fast and through mirage on shots 8, 9 and 10. I hit right. I'm slipping it .1 mil and will keep an eye on it.