TruAngle^TM Cartridge Run-out Correction Tool

The TruAngle™ Cartridge Run-out Correction Tool is used to remove seated bullet run-out from either factory or hand loaded bottleneck cartridges. This tool is for all bottleneck cartridges .17 through .375 caliber. Use of this simple tool can improve the group size of your firearm.

Aluminum 6061, CNC Machine Center holes & chamfers. Remaining surfaces plain finish, burr free. Mounting hole for 5/16 screw, or fasten w/ clamp.

.17 Remington, .223 Remington, & .308 Winchester cartridge shown for reference

Here you will find user information as well as order information for the TruAngle bottle neck cartridge run-out correction tool.

International Customers please email for a cost of shipping price. I ship via Global Priority mail. Please include your shipping address to allow calculation of shipping cost.

The illustration below represents one of the most common conditions that is the root cause of both Factory & Reload bottleneck ammunition that has excessive seated bullet run-out. The condition is where the case wall thickness is not uniform. The thinner side will be weaker and prone to yield verses the other thicker side. Now a good portion of the cases you work with have uniform wall thickness. These are the cartridges that come out of your press with little run-out. But, we all have cases where wall thickness is not uniform resulting in ammo coming out of our press that has run-out. The TruAngle is used to correct this run-out. Straight ammo shoots better.

International Customers please email for a cost of shipping price. I ship via Global Priority mail. Please include your shipping address to allow calculation of shipping cost. 

Other payment methods are your personal check, money order (USPS MO preferred),  PayPal. Please use email address   truangle@charter.net   for PayPal.com electronic payments.  Please  mail your check or money order, payable to Pat Campbell, to the address below. Be sure to provide your shipping address.

I will ship your TruAngle pronto upon receipt of payment. "Thank You" for your consideration of the TruAngle^TM !

Please send payment or correspondence to:

(262) 334-3632

truangle@charter.net

Below is the TruAngle User Guide included with your TruAngle.

TruAngle™ Cartridge Run-out Correction Tool

Thank You for choosing the TruAngle™ Tool. For ease of use the TruAngle™ Tool should be fastened to your loading bench with an appropriate screw through the single mounting hole in the base. A “C” clamp or other type clamp may also be used to fasten the TruAngle™ to the loading bench. Below are some tips on how to use the TruAngle™ Tool for correcting excessive seated bullet run-out in your bottleneck cartridge.

Step 1: Measure the cartridge to determine the amount of bullet run-out as shown in the photo with an appropriate concentricity or run-out gage. I place a mark on the case shoulder where the measured run-out has the bullets tip (meplat) pointing down.

Step 2: Insert the marked cartridge in a TruAngle™ hole that is close in size to the case neck diameter. Since I have a mark on the case shoulder as described in Step 1, I align the mark “up” as shown in the photo. I also insert the case neck / shoulder junction area close to the TruAngle™as shown in the photo.

Step 3: I carefully apply a “lifting” force to the rear of the cartridge case. This I do gently being mindful of the “feel” of the resistance of the cartridge case to bending or yielding. What is happening is that the cartridge case shoulder area will “yield”, or bend just a bit. This will shift the bullet axis into alignment with the cartridge case axis alignment.

Step 4: Measure the cartridge case as in Step 1 to determine the amount of run-out correction that has been accomplished. Repeat these steps as required to achieve the amount of seated bullet run-out that you are satisfied with.

Email contact: Pat Campbell, TruAngle@Charter.net  or call (262) 334-3632