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Bullet Seating Depth Tools<br />
Determining Bullet Seater Depth:<br />
One reason we reload is to obtain the greatest accuracy from our rifl es that we can possibly achieve. In this quest, we usually will try a variety of bullets<br />
of different styles and different weights. In trying these bullets, one step we pay close attention to is the overall length (OAL) of these loaded rounds with<br />
regards to the overall length of the chamber.<br />
The handloader must determine the OAL of his rifl e’s chamber for each type of bullet he loads. Every bullet, when touching the beginning of the rifl ing,<br />
will result in a different OAL. This length just becomes a starting point for the handloader. Most rifl es will not necessarily shoot best when the bullets are<br />
touching the rifl ing. They may shoot better when backed off .010" or .005" away from the rifl ing.<br />
A number of methods can be used to fi nd this beginning point (the overall seating depth for an individual bullet). We offer two tools that allow you to<br />
obtain the OAL for your bullets and your rifl e. The <strong>Sinclair</strong> Seating Depth Tool has been around for almost 20 years and is the more accurate of the two<br />
tools. The Hornady Lock-N-Load OAL Gage tool (formerly Stoney Point) is not as accurate but is much easier to use and works well to obtain a starting<br />
point. We highly recommend using a bullet comparator with either of these tools (see page 34).<br />
NOTE: WHEN LOADING ROUNDS THAT TOUCH THE RIFLING, ALWAYS WATCH FOR INDICATIONS OF HIGH PRESSURE.<br />
TUBB 2000<br />
Guide<br />
AR-15 Guide<br />
AR-10 Guide<br />
<strong>Sinclair</strong> Bullet Seating Depth Tool<br />
The <strong>Sinclair</strong> Seating Depth Tool has been used for decades by handloaders seeking the most accuracy out of their<br />
rifles. We have recently improved our seating depth tool to accommodate 17 and 20 caliber shooters without having<br />
to have two tools. Our newest model is made from ¼" ground and polished stainless steel with one end turned down<br />
for use with 17 and 20 caliber rifles and the other end used for 22 caliber and up. This tool helps you determine the<br />
length of a loaded round touching the rifling. This length is generally considered to be the best starting point in load<br />
development and the best length for fireforming most cases.<br />
The <strong>Sinclair</strong> Seating Depth Tool will work with most bolt action, single shot and AR type rifles. The tool includes<br />
a Delrin action guide for most bolt-action rifles (Remingtons, Savages, Winchesters, and Rugers), a stainless steel<br />
measuring shaft, two stainless steel stop collars and complete illustrated instructions. For bolt-actions other than those<br />
listed above you may need to order an additional action guide. These action guides are available for the updated tool<br />
in the sizes below. We also inventory action guides for the older tools, which were made from .218" stainless rod. To<br />
order action guides for older tools or if you are unsure which model you have, please ask one of our sales representatives<br />
for assistance.<br />
See page 34 for our <strong>Sinclair</strong> Bullet Comparators.<br />
#749-004-650SK <strong>Sinclair</strong> Seating Depth Tool with Standard Guide $33.99 We recommend using a Comparator with our<br />
<strong>Sinclair</strong> Bullet Seating Depth Tool.<br />
We also make a guide for use in AR-15’s, AR-10’s, and<br />
Tubb’s 2000’s. Many shooters load single shot rounds<br />
longer than magazine length. The guide is a little different<br />
than our standard bolt-action guides. This guide<br />
inserts into the back of the upper receiver (with the bolt<br />
removed). The tool is then used as normal.<br />
#749-008-968SK Action Guide for AR-15 $9.95<br />
#749-008-962SK Action Guide for AR-10 10.95<br />
#749-001-566SK Action Guide for Tubb 2000 10.95<br />
32 800-717-8211<br />
Additional Action Guides $9.50 each<br />
ITEM # DESCRIPTION<br />
#749-001-236SK Sako (L46, A1 and Vixen) Cooper 21 & 38<br />
#749-001-238SK Sako (A2 and L579) CZ 527, Kimber 84M<br />
#749-001-229SK Sako 75<br />
#749-001-230SK Sako (A3, A4, L61) Tikka, Vanguard, Kimber 8400<br />
#749-001-237SK BAT, Shilen<br />
#749-011-665SK Steyr (L, M, SSG) Sako TRG, Hall Express<br />
#749-001-231SK Sig Sauer<br />
#749-001-232SK Steyr Scout, S<br />
#749-001-235SK Wby Mk V, Kleingunther<br />
#749-001-233SK Hall, Millennium, RPA, BBR<br />
We recommend using a<br />
<strong>Sinclair</strong> Bullet Comparator with our<br />
<strong>Sinclair</strong> Bullet Seating Depth Tool<br />
#749-008-968<br />
<strong>Sinclair</strong> Seating Depth Tool<br />
In Use with AR-15 Guide<br />
#749-004-650<br />
<strong>Sinclair</strong> Seating Depth Tool
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