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Barrel Type

AR Type
  Rimfire Drop-in Barrels:
RUGER 10/22 77/22
CZ 455
ANSCHUTZ 2007/13

Remington 504 Precision Barrel



Barrel Data

Available in three barrel contours:

  • Stainless steel barrel that is .975" diameter for 3" and then a straight taper down to .610" diameter at 21". We refer to this as our Target Taper. These barrels are made from our tight-bore blanks and chambered with an EPS match-chamber. Weight is 2 pounds 12 ounces (44 ounces).
  • Stainless steel barrel that is a copy of the Remington 504 factory contour with a finish length of 21". Made from tight-bore blanks and chambered with an EPS match reamer. Weight is 2 pounds 5 ounces(37 ounces).
  • Stainless steel barrel that is a .975" diameter straight cylinder with no taper. Made from tight-bore blanks and chambered with an EPS match reamer. The weight is 4 pounds 1 ounce (65 ounces).

These barrels are a true match-grade barrel, we only have one grade for all of our barrels, our best. All of these barrels are made from 1" diameter 416 alloy rifle-barrel-quality stainless steel. Every barrel is drilled, reamed and rifled in our shop followed by a stress relieving heat treatment operation. They are then hand- lapped for a superior internal finish and diameter uniformity. With these drop-in barrels we then turn the shank end of the barrel to the proper dimensions and cut a true match chamber.

The barrel is then cut to final length and crowned with an 11 degree target-type crown. Each barrel is then polished to a 600 grit exterior finish and then our name and the cartridge designation is engraved on the barrel. And lastly the finished barrel receives a final inspection and is sealed in a 6 mil poly tube and placed on the shelf.

Our testing indicates that this new Remington action and our special barrel contour are a very accurate combination. Shooting Eley EPS ammo, Lapua Midas M, and Federal Gold Medal resulted in 5-shot groups in the .2's at 50 yards.

Drop-in barrels do not require any special gunsmithing. Directions for installing the barrel are furnished with each barrel. These instructions can also be found directly below. If you do not feel qualified to install your new drop-in barrel we can do so for a $30 charge.

The new Remington Model 547 is the same action as the 504 and that 504 barrels are interchangeable.

Installation Instructions

To remove original barrel:

1. Loosen the 10-32 crossbolt with a T-27 Torx head bit.

2. Loosen the 10-32 sockethead set screw using a 3/32" Allen head wrench.

3. Pull barrel out of receiver. Note: the original set screw is a pointed screw and has pushed up a dimple on the Remington barrel shank. This dimple may prevent the barrel from pulling out easily. It will come out though and this is the only impediment.

To install new barrel:

1. Slide the new barrel into receiver being careful to align the pin at 6:00 in the receiver with the slot on bottom the side of the barrel.

2. Insert a Go Gauge into the chamber and close the bolt leaving it in the cocked position. A Go Gauge must be used to properly headspace this barrel.

3. Push the new barrel into the receiver until it is stopped by the Go Gauge.

4. Tighten the 10-32 set screw using a 3/32" Allen wrench.

5. Tighten the 10-32 crossbolt.

Note: The new barrel is furnished with a 10-32 x .500" long socket head cap screw (use a 5/32" Allen wrench). You may replace the 10-32 x .375" long Torx head crossbolt if desired. If you do so, the longer length screw we furnish will engage more of the threads in the receiver but it may also be necessary to remove a small divot from the stock in the corresponding area.

We also furnish a new 10-32 x .250" long set screw with a cup face to replace the pointed screw if desired. The barrel shank on our replacement barrel has a flat milled where the set screw engages the shank preventing the dimple problem with the original barrel.

We offer a .043" Go Gauge made by Pacific Precison.


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Barrel Information
Barrel Data
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