How close to zero does it get you with a scope?

Very close with my red dots. I set a table up om one end of a tweleve foot room. Set and locked my rifle into a gun vice. Inserted the bore Laser into the chamber. With bore light show on the far wall I aligned my red dot on top of it. I did this with a 12 gauge pump, several .223 rifles and a 9mm carbine. All using different bore sights of course. At range everything was within two clicks or right on. I did adjust the .223 and 9 to shoot a little higher. Twelve gauge was right on for twelve feet, which is good range for a home shotgun.

Does this one turn on when trigger is pulled or does it stay on all time once place in chamber?

The laser turns on when the batteries are inserted and the cap is screwed on. There is no switch. You won't want to pull the trigger when this is in the chamber, as the back of the boresighter is brass and likely won't react well to a firing pin strike. It works pretty well. Keep in mind you just use this to align your sights and then eject the round. To store it you unscrew the rear cap and remove the batteries.

What do I need to bore sight a .410 shockwave?

a .45 long colt bore sight could possibly work since there are revolvers that can fire both .45lc and 410

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MidTen 12 Gauge Bore Sight Laser, Red/Green Dot Zeroing Laser Boresighter

MidTen 12 Gauge Bore Sight Laser, Red/Green Dot Zeroing Laser Boresighter

Product ID: 466921516

Details

Brand
MidTen
Color
Green Rose
Style
Green Laser
Sport
Airsoft
Item Weight
0.16 Kilograms
Material
Brass

🎯12 gauge precision fit

💚Clear green laser, 30-300 yards

🔋9 LR44 batteries included

SAR 167

Duties & taxes included

In stock

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Description

💥 Lock your sights, lead the pack with MidTen precision!

TRUSTED BY HUNTERS PROS - Ranked #32 in Hunting Boresighters with a 4.5-star rating from 211 users—join the elite zeroing club.
PINPOINT ACCURACY EVERY TIME - Chamber-sized 12 gauge brass construction ensures a perfect bore fit for flawless zeroing.
SAVE TIME MONEY ON ZEROING - Eliminate guesswork and costly live-fire adjustments with precise laser bore sighting.
VIVID GREEN LASER VISIBILITY - 510-540nm wavelength green laser offers superior contrast for quick, confident sight alignment.
EXTENDED USE WITH BACKUP POWER - Includes 3 sets of LR44 batteries, delivering up to 2 hours of continuous laser operation.

The MidTen 12 Gauge Bore Sight Laser features a chamber-sized solid brass design with a vivid green Class IIIA laser (less than 5mW) that projects up to 300 yards. It comes with 9 LR44 batteries for extended use and is highly rated by hunters for fast, accurate zeroing of optics and iron sights, saving time and ammunition costs.

Specifications

Aiming Scope Sight Pin Size	2 inches
Asin	B0B3SW9PM8
Best Sellers Rank	#16,795 in Sports & Outdoors (See Top 100 in Sports & Outdoors) #32 in Hunting Boresighters
Brand Name	MidTen
Color	Green, Rose Gold
Compatible Devices	Handgun
Customer Reviews	4.5 4.5 out of 5 stars (211) 4.5 out of 5 stars
Included Components	1 x green laser boresighter 12 gauge, 9 x LR44 batteries
Lens Color	Green
Manufacturer	ZHONGSHAN DEYE PHOTOELECTRIC TECHNOLOGY CO., LTD.
Material Type	Brass
Model Name	12 gauge green laser bore sight
Model Number	12GA-G
Mounting Type	Picatinny Mount
Number Of Items	1
Product Style	Green Laser
Reticle Type	Dot
Sport Type	Airsoft, Hunting
Unit Count	9 Count

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