Validating zero

[Alan]

How do you typically validate zero once an optic is mounted, and at what stage do you consider it complete?

 

[blaze_rave]

Start by bore sighting, then confirm your aim at 25yards before zeroing in at 100. The process is complete when I can consistently hit tight groups from various positions and ensure that my zero hasn’t changed. Usually it takes about 40-50rds to validate everything.

 

[SteadyMike]

  I won't really trust it until I've gone back on a separate day and seen the same results. Just one good grouping isn't enough for me to tick it off the list.

 

[ducky]

How do you typically validate zero once an optic is mounted, and at what stage do you consider it complete?

I validate by shooting at range once I confirm zero. Once I'm able to consistently hit 2 MOA size round or diamond plates, I consider my rifle ready to hunt. Depending on what rifle I'm trying to use, will change on what I consider acceptable zeros.

1.5" groups centered on POA is acceptable at 50 yds for most of my open sight rifles, .30-30, .30-40, and .44 Mag as I don't shoot much beyond 150 yds with most of those rifles. Most my .30 cal (.308 Win and up) or magnum cartridges I'm pretty happy with 1.5" groups at 100 yds from prone resting on a pack or bi-pod. My sub .30 cals I usually try to shoot sub MOA at 100 prone off a pack or bipod as well. I don't use a rear bag as I don't carry one while hunting.

If I'm shooting from a bench with front rest and rear bag, I'm striving for MOA or better consistently with all my rifles, except my varmint rifles. Those I'm working for 1/2 MOA or better depending on ammunition. As some I buy factory ammunition and some I reload for, so If it's factory ammunition I'm happy with sub MOA.

 

[Trigga]

I validate by shooting at range once I confirm zero. Once I'm able to consistently hit 2 MOA size round or diamond plates, I consider my rifle ready to hunt. Depending on what rifle I'm trying to use, will change on what I consider acceptable zeros.

1.5" groups centered on POA is acceptable at 50 yds for most of my open sight rifles, .30-30, .30-40, and .44 Mag as I don't shoot much beyond 150 yds with most of those rifles. Most my .30 cal (.308 Win and up) or magnum cartridges I'm pretty happy with 1.5" groups at 100 yds from prone resting on a pack or bi-pod. My sub .30 cals I usually try to shoot sub MOA at 100 prone off a pack or bipod as well. I don't use a rear bag as I don't carry one while hunting.

If I'm shooting from a bench with front rest and rear bag, I'm striving for MOA or better consistently with all my rifles, except my varmint rifles. Those I'm working for 1/2 MOA or better depending on ammunition. As some I buy factory ammunition and some I reload for, so If it's factory ammunition I'm happy with sub MOA.

That’s a sensible approach. I like that your standards reflect how the rifle will actually be used in the field rather than chasing tiny benchrest groups. Verifying zero and proving consistent hits from realistic hunting positions tells you a lot more than a single great group.

 

[Kora]

I like to shoot a three-shot group, take a break, then shoot another cold group. If both sets tell me the same story, I’m satisfied. One group alone doesn’t mean much anymore.