Will any of these work with a 300 win mag?

No, there is boresighter in this kit for this gun. But we have an universal boresighter will work it. It works very well for .17-12ga calibers. Please check it here: https://www.amazon.com/StrongTools-BoreSighter-Universal-Boresight-Batteries/dp/B07WQYDNW4/ref=sr_1_2?dchild=1&m=AEKCUJ929YEAX&marketplaceID=ATVPDKIKX0DER&qid=1593645890&s=merchant-items&sr=1-2 Thanks for your asking! Customer Team of StrongTools

Is it necessary to remove the extractor like with other bullet lasers?

I did not remove the extractor I just used the charging handle on my AR to slowly let the bolt carrier set on the laser, if you using a pistol one I just let the slide onto the laser slowly, there are instructions included with the bore sights.

sited .30-06 at about 20ft. how far is actually sited in at 100-200yards?

I sighted at 100 yards. It's best to start out close -- 40 yards or so -- then move out to a longer distance. I think your question lists 20 FEET --- and you probably meant 20 YARDS,

How close will this get you at 100 yards?

I am getting 5 round clusters in .625 inches at 100 meters

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Laser Boresighter Kit

Product ID: 99935709

Details

Brand
StrongTools
Color
Gold
Compatible Devices
Handgun Rifle
Item Weight
7.8 ounces
Magnification Minimum
1 x 7 x
Manufacturer
Dongguan Co.

🎯7 caliber-specific boresights

🔴Class IIIa red laser, 630-680nm wavelength

🛠️Precision brass machining for durability

R2882

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Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

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

DURABLE BRASS BUILD - Crafted from high-quality brass with precision machining for long-lasting reliability in rugged hunting conditions.
RAPID ZEROING EFFICIENCY - Cut down sighting time dramatically—save money and range visits by achieving perfect bore alignment fast.
COMPLETE READY TO USE KIT - Includes AG3 batteries and 7 boresights, so you’re fully equipped to zero your rifle or handgun out of the box.
CALIBER SPECIFIC PRECISION - 7 laser boresights tailored for popular calibers from 22LR to 45ACP, ensuring perfect fit and accuracy every time.
HIGH VISIBILITY RED DOT LASER - Utilizes a Class IIIa red laser (630-680nm) for clear, sharp aiming points that enhance sighting accuracy.

The StrongTools BoreSighter Kit offers 7 caliber-specific brass boresights with a high-quality Class IIIa red laser for rapid, precise sighting. Designed for rifles and handguns from 22LR to 45ACP, it saves time and money by minimizing live fire zeroing. Durable, ready-to-use with included batteries, this kit is a must-have for serious hunters and shooters aiming for flawless accuracy.

Specifications

ASIN	B07JLFPJPK
Best Sellers Rank	#2,481 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #10 in Hunting Boresighters #1,087 in Hunting Equipment
Brand	StrongTools
Brand Name	StrongTools
Color	Gold
Compatible Devices	Handgun, Rifle
Customer Reviews	4.4 out of 5 stars 2,026 Reviews
Item Weight	7.8 ounces
Magnification Minimum	1 x, 7 x
Manufacturer	Dongguan Yijing Optoelectronics Technology Co., Ltd
Material	Metal
Material Type	Metal
Model Name	Laser Bore Sight
Model Number	3006, 3030, 308WIN, 223, 9MM
Mounting Type	Picatinny Mount
Number of Items	7
Reticle Type	Dot
Sport	Hunting
Sport Type	Hunting
UPC	681381742255
Unit Count	7 Count

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R2882

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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