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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12 Gauge Laser Boresighter

Product ID: 124085788

Details

Brand
MidTen
Color
Tan
Compatible Devices
Shotgun
Item Weight
0.05 kg
Magnification Maximum
3
Magnification Minimum
3 x

🎯15-100 yd sighting range

🔴Class IIIA laser <5mW

🛠️Precision brass build

₹ 3414

Duties & taxes included

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Description

🎯 Lock in your shot, lead the hunt with precision!

LONG LASTING POWER - Includes extra AG13 batteries delivering up to 8 hours of uninterrupted zeroing.
RUGGED BRASS DURABILITY - Sturdy brass construction built to withstand the toughest hunting conditions.
FAST EFFORTLESS ZEROING - Quickly aligns your shotgun sights for immediate on-target confidence.
TAILORED FIT FOR 12 GAUGE - Caliber-specific design ensures perfect bore alignment every time.
PINPOINT ACCURACY ZERO WASTE - High-precision laser reduces costly cartridge waste for smarter shooting.

The MidTen 12 Gauge Bore Sight Laser is a caliber-specific, Class IIIA red/green dot laser boresighter designed for fast, accurate shotgun zeroing. Crafted from durable brass, it fits perfectly in 12-gauge chambers and offers a sighting range of 15 to 100 yards. Powered by included AG13 batteries lasting up to 8 hours, it minimizes wasted cartridges and enhances shooting efficiency for hunters and shooting enthusiasts.

Specifications

ASIN	B07MS8TQRM
Aiming Scope Sight Pin Size	2 inches
Best Sellers Rank	#29,484 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #37 in Hunting Boresighters
Brand Name	MidTen
Color	Tan
Compatible Devices	Shotgun
Customer Reviews	4.6 4.6 out of 5 stars (3,951)
Item Dimensions L x W x H	2"W x 1.18"H
Item Weight	0.05 kg
Magnification Maximum	3
Magnification Minimum	3 x
Manufacturer	NANTONG CHENGXIN OPTICAL INSTRUMENT CO., LTD.
Material Type	Brass
Model Number	12GA
Mounting Type	Picatinny Mount
Product Style	Red Laser
Reticle Type	Dot
Sport Type	Hunting
UPC	712096309317
Unit Count	1 Count

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