Rimrock Actions

General Information

Borden Rimrock B actions were specifically designed for LV benchrest rifles.  The Rimrock BR action is light and works well for the LV rifles but we found many competitors wanted the standard Remington Short action “bolt throw”.  The Rimrock BRM tends to be too heavy for LV benchrest so we modifed the BRM design to result in a lighter action that maintains the bolt throw of a Remington 700 short action.  We bobbed the tang from 2.250 inches long to 1.8 inches long and we opened the loading port to 3.0 inches long.  These changes reduced the weight to make the B action perfect for building the Light Varmint benchrest rifles.    

The action is 1.350 in diameter and is made of hardened 416 Stainless Steel.  The bolt body is hardened 4142 steel and is spiral fluted.  The action with dual port setup (6.5×284 Win length ejection port) with no recoil lug for glue in weighs 31 ounces.    It is available as Right Bolt Right Port, Right Bolt Left Port, Left Bolt Left Port, Left Bolt Right Port, Right Bolt Left Port Right Eject, Left Bolt Right Port Left Eject.  There are 2 sizes of ejection ports.   The mini 6.5×47 port is 1.950 inches long and is designed for the 6.5×47 Lapua family of cases.  

The mini 6.5×284 port is 2.4 inches long and is designed for the 308 Win and 284 Win family of cases. Of course the longer miniports will also eject the shorter cases.  We are offering a .215 thick spacer ring for individuals that want to adapt barreled they have fitted for Stolle Panda actions.  The action comes standard with a cylindrically ground finish.  Mirror polish is available as an option.  The action is also available with dual blind pinned 1/4 inch thick recoil lug.  the action has a middle and forward guard screw holes milled and thread milled to 1/4×28 tpi.

Borden Rimrock BR actions are perfect for LV Benchrest, Unlimited Benchrest, 600/1000 Yard Light and Heavy Gun Benchrest as well as FTR Rifles.  The action is quick operating as it has the “bolt throw” of a Remington XP100.  It is about 7 3/8 inches in overall length. The action is 1.350 in diameter and is made of hardened 416 Stainless Steel.  The bolt body is hardened 4142 steel and is spiral fluted.  

The action with single port setup with no recoil lug for glue in weighs 30.25 ounces.  Action with left or right loading port and left or right 6.5×47 miniport weighs 29.25 ounces. The action is available with 223 boltface, or the PPC/BR/308 boltface..  It is available as Right Bolt Right Port, Right Bolt Left Port, Left Bolt Left Port, Left Bolt Right Port, Right Bolt Left Port Right Eject, Left Bolt Right Port Left Eject.  There are 2 sizes of ejection ports.  The mini is 1.8 inches long and is perfect for PPC, BR cases including the Dasher variants.  

The mini 6.5×47 port is 1.950 inches long and is designed for the 6.5×47 Lapua family of cases.   Of course the longer miniport will also eject the shorter cases.  We are offering a .215 thick spacer ring for individuals that want to adapt barreled they have fitted for Stolle Panda actions.  The action comes standard with a cylindrically ground finish.  Mirror polish is available as an option.  The action is also available with dual blind pinned 1/4 inch thick recoil lug.

Borden Rimrock BRL actions are perfect for long Range single shot rifles using standard magnum or 30-06 family cartridges.   The action has the “bolt throw” of a Remington long action.  It is about 8 7/8 inches in overall length. The action is 1.350 in diameter and is made of hardened 416 Stainless Steel.  The bolt body is hardened 4142 steel and is spiral fluted.  

The action with single port setup with no recoil lug for glue in weighs 36 ounces.  Action with left or right loading port and left or right 6.5×284 miniport weighs 35 ounces. The action is available with PPC/BR/308 boltface or the standard magnum boltface.  It is available as Right Bolt Right Port, Right Bolt Left Port, Left Bolt Left Port, Left Bolt Right Port, Right Bolt Left Port Right Eject, Left Bolt Right Port Left Eject.  

There is one size of ejection ports.  The mini port is designed to be large enough and long enough to eject empty 30-06 cases.    The action comes standard with a cylindrically ground finish.  Mirror polish is available as an option.  The action is also available with dual blind pinned 1/4 inch thick recoil lug.

Borden Rimrock BRLXD actions are same length as the BRL action and are made to be 1.470 inch in diameter versus 1.350 to result in a heavier and more rigid action for heavy BR, Long Range hunting and F Open rifles. This action perfect for long Range single shot rifles using standard magnum or 30-06 family cartridges. The action has the “bolt throw” of a Remington long action. It is about 8 7/8 inches in overall length. The action is 1.470 in diameter and is made of hardened 416 Stainless Steel. The bolt body is hardened 4142 steel and is spiral fluted.

The action with single port setup with no rail and no recoil lug for glue in weighs 44.5 ounces. Action with left or right loading port and left or right 6.5×284 miniport weighs 43 ounces. The action is available with PPC/BR/308 boltface or the standard magnum boltface.

It is available as Right Bolt Right Port, Right Bolt Left Port, Left Bolt Left Port, Left Bolt Right Port, Right Bolt Left Port Right Eject, Left Bolt Right Port Left Eject, Right bolt Left port bottom eject or Left bolt right port bottom eject. The bottom eject versions can utilize up through the 284 win case. There is one size of side ejection ports. The mini side eject port is designed to be large enough and long enough to eject empty 30-06

cases.   The action comes standard with a cylindrically ground finish. Mirror polish is available or black nitride are available as options. The action also has an available screw on bottom recoil lug.

Borden Rimrock BRM actions are perfect for HV Benchrest, Unlimited Benchrest, 600/1000 Yard Light and Heavy Gun Benchrest as well as FTR Rifles and sometimes F Open rifles.  The action has the “bolt throw” of a Remington short action.  It is about 8.14 inches in overall length. The action is 1.350 in diameter and is made of hardened 416 Stainless Steel.  The bolt body is hardened 4142 steel and is spiral fluted.  

The action with single port setup with no recoil lug for glue in weighs 34 ounces.  Action with left or right loading port and left or right 6.5×284 miniport weighs 33 ounces. The action is available with 223 boltface,  the PPC/BR/308 boltface or the standard magnum boltface.  It is available as Right Bolt Right Port, Right Bolt Left Port, Left Bolt Left Port, Left Bolt Right Port, Right Bolt Left Port Right Eject, Left Bolt Right Port Left Eject.  There are 4 sizes of ejection ports.  The mini is 1.8 inches long and is perfect for PPC, BR cases including the Dasher variants.  The mini 6.5×47 port is 1.950 inches long and is designed for the 6.5×47 Lapua family of cases.  

The mini 6.5×284 port is 2.4 inches long and is designed for the 308 Win and 284 Win family of cases. Of course the longer miniports will also eject the shorter cases.  We are offering a .215 thick spacer ring for individuals that want to adapt barreled they have fitted for Stolle Panda actions.  The action comes standard with a cylindrically ground finish.  Mirror polish is available as an option.  The action is also available with dual blind pinned 1/4 inch thick recoil lug.

Borden Rimrock BRMXD actions are perfect for HV Benchrest, Unlimited Benchrest, 600/1000 Yard Light and Heavy Gun Benchrest as well as F Open Class Rifles.  The action is 1.470 in diameter and is made of hardened 416 Stainless Steel.  The bolt body is hardened 4142 steel and is spiral fluted.  The action with single port and optional bottom bolt on recoil lug weighs 42.6 ounces.  Action with left or right loading port and left or right 6.5×47 miniport weighs 39.5 ounces including bolt on recoil lug.

The action is available with 223 boltface, PPC/BR/308 boltface; or standard Magnum Boltface.  It is available as Right Bolt Right Port, Right Bolt Left Port, Left Bolt Left Port, Left Bolt Right Port, Right Bolt Left Port Right Eject, Left Bolt Right Port Left Eject.  There are 4 sizes of ejection ports.  The mini is 1.8 inches long and is perfect for PPC, BR cases including the Dasher variants.  

The mini 6.5×47 port is 1.950 inches long and is designed for the 6.5×47 Lapua family of cases.  The mini 6.5×284 port is 2.4 inches long and is designed for the 6.5×284 family of cases.  The Magnum mini port is not very mini and is designed for ejection of the WSM and RSAUM cases.  Of course each of the longer miniports will also eject the shorter cases.  We are offering a .215 thick spacer ring for individuals that want to adapt barreled they have fitted for Stolle Panda actions.  The action comes standard with a cylindrically ground finish.  Mirror polish is available as an option.

Borden Mountaineer actions are made to fit the stock inletting done for Remington 700 Short and Long Actions.  We have added this action to the lineup to meet the needs of those wanting a “Tactical style” action and for those participating in PRS matches.  The action is precision made and the Mountaineer RR model features a version of the Borden Bumps to ensure firm lock up of both lugs to the lug seats in the action.  This version of the Borden bumps is done to provide positive lockup of the bolt lugs while at same time providing extra clearance for dirt in operations such as PRS matches.

The standard Mountaineer action utilizes the same bolts as the Alpine and Timberline actions. The Timberline and Alpine line of actions already have bolts that have less clearance than any others in the industry and the Rimrock line of actions have even tighter specifications. The fit between the bolt and the action raceway hole is less than 0.002 inch at the rear receiver bridge while the remainder of the bolt has clearance of less than 0.006 inch.  The action body is made of 416 Stainless Steel hardened to 40 Rc and features a chrome moly bolt hardened to 44Rc.  The bolt is spiral fluted and utilizes a Sako style, M16 style or internal hook style extractor.

The action is available as a single shot or as a repeater. The short action repeater version offers the choice of a Standard Remington short Magazine well opening, The Remington WSM family magazine well opening, the Wyatt Short Standard magazine well opening (perfect for cartridges such as the 6.5×284) the Wyatt WSM magazine well opening or the AI AW mag well opening. The long action repeater version offers the choice of a Standard Remington Long Magazine well opening, The Remington Ultra Mag family magazine well opening, the Wyatt Long Standard magazine well opening (perfect for cartridges such as the 7 STW and 300 Weatherby) and the Wyatt Ultra Mag magazine well opening. The  Wyatt length mag wells offer bullet seating 0.115 inch longer than can be obtained in Remington magazine wells.  The long action is available with 30-06, standard magnum or Dakota bolt faces.  The short action is available with 223, 308 and standard magnum bolt faces.

They are available Right Bolt Right port, Left bolt left port, Right Bolt left port and Left Bolt Right Port. The action is also available with dual blind pinned 1/4 inch thick recoil lug.  The action is milled and thread milled with four 8×40 scope block mounting holes. The holes are blind and are threaded completely to the bottom of the hole.
the picture here features an optional 20 MOA rail and has the optional polished finish.

Borden Rimrock Denali actions are same length and diameter (8 7/8 and 1.470 inch) as the BRLD action. The Denali has larger threaded counterbore for the barrel tenon ( 1 1/8×18 TPI) and utilizes a .750 nominal diameter bolt that has 1.06 diameter lugs that are .469 high.

The action is designed so that it can accommodate the use of 338 Lapua and Norma magnum cartrdiges. The action is 1.470 in diameter and is made of hardened(38 to 40 Rc) 416 Stainless Steel. The bolt body is hardened 4142 steel (40 to 44 Rc) and is spiral fluted. The action with single port setup with no rail and no recoil lug for glue in weighs 44.5 ounces.

The action is available with stand magnum boltface (.545) or the Lapua magnum boltface (.590). It is available as Right Bolt Right Port, Right Bolt Left Port, Left Bolt Left Port, Left Bolt Right Port. The action is NOT available as a dual port action The action comes standard with a cylindrically ground finish. Mirror polish is available or black nitride are available as options. The action also has an available screw on bottom recoil lug.

Detailed Specs

ModelOALDIAMETERPort
Length
WeightPriceUSESStyleConfiguration
BR7 3/81.352.5530.25 (std)$1,350.00Benchrest
Varmint
Single ShotRBRP; RBLP;
 LBLP; LBRP;
BR
with Miniport
7 3/81.352.550 Loading
1.8 ejection
 $1,425.00BenchrestSingle ShotRBLPRE;
LBRPLE
BR
 with miniport for 6.5×47
7 3/81.352.550 Loading
1.950 Ejection
29.25$1,425.001425Single ShotRBLPRE;
 LBRPLE
Rimrock B7 9/161.353.0 Loading
2.4 ejection
31 (dual port)$1400
$1475 dual port
Benchrest LVSingle shot (New 2/20/14-screw in or glue in)RBRP; RBLP;
RBLPRE; LBRPLE
BRM8 1/81.352.7534$1,400.00Benchrest LV
FTR
Single ShotRBRP; RBLP;
LBLP;LBRP
BRM
 with minport 6PPC/BR family
8 1/81.352.750 Loading
1.8 ejection
33.25$1,475.00BenchrestSingle ShotRBLPRE;
LBRPLE
BRM
with miniport 6.5×47
 and 6.5×284 family
8 1/81.352.750 Loading
2.4 ejection
33$1,475.00Benchrest
FTR
Single ShotRBLPRE;
LBRPLE
BRM Dual Port
RSAUM and WSM
8 1/81.352.750 Loading
2.3 Ejection
32$1,475.00BenchrestSingle ShotRBLPRE;
LBRPLE
BRM with Bottom Eject8 1/81.352.750 Loading
 1.570 bottom port
33$1,475.00BenchrestSingle ShotRBLPBE;
LBRPBE
BRMXD8 1/81.472.7542.6$1,475Benchrest HV
 F Open
Single ShotRBRP; RBLP;
LBLP; LBRP
BRMXD
 with miniport
8 1/81.472.750 loading
1.8 ejection
 $1,550.00Benchrest
F Open
Single ShotRBLPRE;
LBRPLE
BRMXD
with 6.5×47 miniport
8 1/81.472.750 Loading
1.95 ejection
40$1,550.00Benchrest
 F Open
Single ShotRBLPRE;
LBRPLE
BRMXD
with 6.5×284 miniport
8 1/81.472.750 Loading
 2.4 Ejection
39.5$1,550.00Benchrest
F Open
Single ShotRBLPRE;
LBRPLE
BRMXD
with Bottom Eject
8 1/81.472.750 Loading
1.570 bottom port
 $1,550.00Benchrest
F Open
Single ShotRBLPBE;
LBRPBE
Rimrock HBR7.841.352.750 Loading
1.940 or 2.4 ejection
28$1,400.00Hunter
 Benchrest
Mag well for Hunter Benchrest Also available single shotRBLPRE;RBRP;
RBLP;LBLP
LBRPLE; RBLPBE;
LBRPBE
BRL8 7/81.353.536$1,525Long Range hunting
/Benchrest/F Class
Single ShotRBRP;RBLP
LBLP; LBRP
BRL
with 30-06 miniport or
284 win bottom eject
8 7/81.353.5 Loading $1,600.00Long range Hunting
/Benchrest/
F Class
Single ShotRBLPRE-
30-06 length
 eject port
BRLXD8 7/81.473.5 loading $1,575Long Range Hunting
/benchrest/
F Class
single shotRBRP;RBLP
LBLP; LBRP
BRLXD
with 30-06 miniport
or 284 win bottom eject
8 7/81.473.5 Loading $1,650.00Long Range hunting/
benchrest/
F Class
single shotRBLPRE;LBRPLE
LBRPBE; RBLPBE
Rimrock Denali8 7/81.473.5 loading $1,575.00Long Range Hunting
/Benchrest
single sotRBLP, RBRP,
 LBLP, LBRP
SSR7.841.352.7526 1/2$1,450HuntingRepeaterRBRP;LBLP
 LBLP LBRP
LSR8.691.353.528 1/2$1,450HuntingRepeaterRBRP;LBLP;
RBLP;LBRP
  • Concentric threads (1 1/16×18 TPI for all models except Rimrock Denali)
  • Rimrock Denali threads are 1 1/8×18 TPI
  • Perpendicular boltface (within .0002)
  • Perpendicular locking lugs
  • Perpendicular action face
  • The actions feature the patented “Borden Bumps” that result in a very close bolt body to action bore fit when the bolt is closed ( <.001″ diametral clearance). Bolt Diameter on The Rimrock family except Denali is nominally .700 inches with bolt lug diameter of .970 and lug height of .428.  The Denali actions have a nominal bolt diameter of .748 and lug diameter if 1.093 and lug height of .465
  • Holes for scope bases are milled and thread milled 8 x 40 (versus drill and tap) and are in line with action bore. Thread milling results in snug threads that are concentric to the hole.
  • Rimrock BR, Rimrock BRM, Rimrock BRMXD, Rimrock BRMMF, Rimrock BRL, Rimrock BRLXD, Rimrock B, and Rimrock Denali  Models feature removable trigger carriers as the standard trigger attachment system
  • Hardened and ground pinned recoil lugs are available as an option. We have two models-a  blind double pinned model for actions that are under 1.45 in diameter and a bottom bolt on for actions 1.450 and larger
  • Action bodies are 416 Stainless Steel hardened to 38 to 40 Rc
  • Chrome Moly Action bodies are available as an option in some models
  • All Bolts are currently manufactured in one piece body with brazed on handle. Bolts are made from Heat treated 4142. Bolts are annealled and hardened to 44 to 46 Rc after primary machining. Final grinding and machininig is done in full hardened state.
  • Rimrock BR, Rimrock BRM, Rimrock BRMXD, Rimrock BRL Models are single shot and are available RBLP, RBRP, LBLP, LBRP, RBLP Right Eject, LBRP Left Eject
  • Rimrock BRM, Rimrock BRMMF, Rimrock BRMXD are available also as RBLP bottom eject or Left bolt Right Port bottom eject for ppc and BR family
  • Rimrock BRL, Rimrock BRLXD are available as RBLP bottom eject LBRP bottom eject for up to 284 win
  • Rimrock B is single shot and is available RBLP; RBLPRE; RBRP
  • Rimrock HBR is an action specifically designed for Hunter Benchrest competition.  The action has a mag well cut that is non functional and the bolt uses a coned nose.  It is available also without the magazine cut. It is available RBRP; LBLP;RBLP;LBRP;RBLPRE;LBRPLE
  • Mountaineer RR action is similar to the SSR and LSR actions-but the body does not have the faceted lightening cuts.  It more easily allows polishing of the action which is common for PRS rifles. The short action is also available with the optional AW magazine well cut. The action is cylindrically ground and utilizes Borden Bumps on the bolt. The Mountaineer action is available with integral recoil lug
  • Models SSR and LSR are designed to fit Rem 700 Stock inlet and are for Light Hunting rifles and Hunter BR rifles.
  • Models SSR and LSR are available RBRP; RBLP, LBLP and LBRP and are available as repeaters or single shot
  • Rimrock Denali actions are for large magnums and have eitehr a std .545 boltface or the 404 Jeffery boltface (.590). These actions are available RBRP, RBLP, LBLP, LBRP–no dual port options available for this model.
  • Sako style extractor is standard

Maintenance Schedule

Follow the following timeframes for optimal performance

  • Replace firing pin spring – Every 5,000 Rounds
  • Use Mil-Com bolt lube after every cleaning behind the lugs
  • Do Not use acid to clean carbon debris

Get In Touch

(570) 965-2505

Location

1325 Sheldon Hill Rd
Springville, PA 18844

Email

bordenrifles@gmail.com

Lobby Open Hours

Mon: 9am - 5pm
Tue: 9am - 5pm
Wed: 9am - 5pm
Thur: 9am - 5pm
Fri: 9am - Noon
Sat: Closed
Sun: Closed

* Please Make An Appointment

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