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SINCLAIR PRIMING TOOL SHELLHOLDERS Reviews & Ratings

Shellholders for the Sinclair Priming Tool.

The Sinclair Priming Tool is one of the finest tools we manufacture. Handloaders around the world have told us “this is the best priming tool in the world”. The Sinclair Priming Tool is manufactured from the finest materials available. The main body, head, and punch housings are all made of stainless steel, the handle is machined from aircraft grade aluminum, and the pins and pushrod are hardened. These materials insure the owner a lifetime of trouble-free use.

The Sinclair Priming Tool comes complete with housings and punches for both large and small primers. The tool head utilizes Sinclair Priming Tool Shellholders and locks the case head square to the priming punch. The leverage of the tool is outstanding, yet extremely sensitive so you can feel the primer entering the primer pocket and bottoming out. Our tool is made for single feeding of primers.

Our tool is expensive but made with consideration for quality and to provide the user with a well-made tool that will last a lifetime and more. There are no plastic parts to wear or break.

Choose By Model Number

Universal – Uses Primer Type Shellholders to hold the case.

#1 - 17 Remington, 204 Ruger, 221 Remington Fireball, 222 Remington, 222 Remington Magnum, 223 Remington, 300 AAC Blackout

#2 – 20 PPC, 22 PPC, 224 Weatherby Magnum, 6mm PPC, 256 Weatherby Magnum, 7.62x39mm, 6mm ARC

#3 - 22 BR, 22-250 Remington, 240 Weatherby Magnum, 243 Winchester, 6mm Remington, 6mm BR, 25-06 Remington, 250 Savage, 260 Remington, 270 Winchester, 280 Remington, 7mm-08 Remington, 7x57mm Mauser, 30-06 Springfield, 300 Savage, 6mm Creedmoor, 6.5mm Creedmoor, 6mm GT, 308 Winchester, 8x57mm Mauser, 35 Whelen,

#4 – 223 WSSM, 243 WSSM, 25 WSSM, 257 Weatherby Magnum, 264 Winchester Magnum, 6.5mm STW, 270 Weatherby Magnum, 270 WSM, 7mm Remington Magnum, 7mm Remington SAUM, 7mm Weatherby Magnum, 7mm Remington Ultra Magnum, 7mm STW, 300 H&H Magnum, 300 Winchester Magnum, 300 Weatherby Magnum, 300 Remington SAUM, 338 Winchester Magnum, 340 Weatherby Magnum, 338 Remington Ultra Magnum, 375 H&H Magnum, 375 Weatherby Magnum,

#7 – 338 Lapua Magnum, 378 Weatherby Magnum, 338 Norma Magnum

#8 – 408 Cheytac, 505 Gibbs

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4 Stars

Reviews Summary

Reviewers highlight the Sinclair Priming Tool Shellholders' strong build and precise performance, particularly appreciating their non-dependence on rim thickness. However, some users experienced quality control issues, especially with fitting certain shell holder heads, leading to frustration. Overall, while most users praise its effectiveness, concerns about quality consistency arise.

What Reviewers Are Saying

Quality Control

40%

A number of reviewers expressed concerns regarding quality control, particularly with rough edges on drilled holes and issues with shell holder heads not fitting properly. These experiences suggest inconsistencies in manufacturing that could negatively impact functionality for some users.

Product Performance

60%

Many users commend the overall performance of the Sinclair Priming Tool Shellholders, noting its precision and the ability to adjust primer seating depth. These features are appreciated, especially by those who have tested various priming tools in the past.

Compatibility Issues

30%

Some reviewers highlighted compatibility problems, specifically with certain brands of brass not fitting correctly, which affected their overall satisfaction. This has created significant frustration for users who had high expectations for the product.

Durability and Design

50%

The build quality of the Sinclair products is frequently praised, with many reviewers citing their robust design as a key strength. Users feel confident that these tools are built to last, contributing to their overall value for money.

Value for Money

55%

A considerable number of customers reflect on the good value for money offered by the Sinclair Priming Tool Shellholders, particularly in comparison to other hand priming tools. This sentiment reinforces loyalty to the brand among experienced reloaders.

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Best priming tool

Having competed in Schutzn matches for over 35 years and using several different priming tools This is the finest made and most prescription units I have ever used including the Pope type. I even use it in place of my bench type unit.

Would you recommend this? Yes, I would recommend to a friend

by Harvey Owens on September 09, 2025

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Best Handheld Priming Tool

Few reasons I believe this is the best compared to several other hand priming tools I have either owned or tested: 1. It is not rim thickness dependent which means that variations in rim thickness do not affect primer seating depth. 2. It is very high quality with strong parts. 3. You can vary the primer seating depth with the use of shims. I purchased metal shims to adjust my primer seating depth.

Sinclair Shell Holder Head

I purchased the Sinclair priming tool several years ago and the quality and function have been outstanding. I recently have purchased a second shellholder head to save a little setup time for other cartridges that I reload. As with all other Sinclair products that I have purchased, I have complete confidence that this product will be outstanding as well.

The Best

I have this and other heads for the priming tool. Its the best bang for your buck. Well made and built to last forever!

perfect

For my 6mm br brass this tool is perfectly made.

Great Product

This priming head for the Sinclair priming tool works great. I use to prime cases for my .338 Lapua Magnum and I only use Lapua brass for my .338. I have not had a single negative issue with this tool when priming my brass.

Out of spec

I bought the Sinclair priming tool for the quality and precision tool that is is supposed to be. I bought the .223 one piece shell holder head because I thought it should be more precise than using the universal priming head that comes with the tool and using a shell holder insert. The shell holder head that I received wont lock the case into the priming tool which is one of the main features of this tool. I hope I just got one that is out of spec. I have tried several different brands of brass and none will lock in. I will return this one and try again

Good, if you don't use Lapua brand brass

My rating would have been 5 star; until recently, when I started trying to prime some Lapua brand brass. Using Hornady brand brass the tool was great, alignment was perfect, and I couldn't have asked for more, from a priming tool. Then I tried priming Lapua brand cases, and they don't fit in the holder, at all. No problem, the tool also came with the holder for use with your shell holder right? Wrong. I've tried 3 different brands of shell holders and the priming ram is too big to fit into the hole in the shell holders. Now I have 100 Lapua brass sitting waiting to prime, and fearing I might have to use the press, since this tool won't prime them.

POS

The inside top of this item has two small holes drilled into it. The inside of the holes on my unit were so rough I had to grind and polish on them a LOT before I could insert a shell holder (SINCLAIR!) all the way to the top to be useful. Shoddy workmanship, shouldn't be this way!