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Contoured Blank and Prefit Contour List

Prefit Contour Diagram

All dimensions listed will remain the same regardless of barrel length.  For prefits or contoured blanks, the only aspect of a contour that changes with barrel length variations will be the length between C and E (or A and E for straight tapers).  Also, the angle of the contour taper (if any) from C to E (or A and E) will change depending on barrel length. 

 

The muzzle diameter (E) is measured on a contoured barrel or blank and does not account for any muzzle threading.  Threading a muzzle will cut a shoulder (typically) .625" back from the normal muzzle end and that shoulder (at the end of the threading) will be a slightly larger diameter than what is measured at E (except for on contour #12).  Take this into account when selecting a contour that will have a threaded muzzle.

 

SAVAGE BARREL CONTOURS - SMALL SHANK (Also Big Horn and Rem783)
Barrel TypeContour #/NameA (Shank):B:C:D:E:
Savage Small Shank#1 - Featherweight1.0582.000.7606.000.560
Savage Small Shank#2 - Light Sporter1.0582.750.7606.000.560
Savage Small Shank#3 - Standard Sporter1.0582.750.8006.000.600
Savage Small Shank#4 - Medium Sporter1.0582.750.8306.000.630
Savage Small Shank#5 - Heavy Sporter1.0582.750.8706.000.670
Savage Small Shank#6 - Bull Sporter1.0582.750.9006.000.700
Savage Small Shank#7 - Heavy Bull Sporter1.0582.7501.0006.000.750
Savage Small Shank#8 - Light Target1.0582.750******.750
Savage Small Shank#9 - Standard Target1.0582.750******.820
Savage Small Shank#10 - Heavy Target1.0582.750******.875
Savage Small Shank#11 - MTU1.0582.750******.930
Savage Small Shank#12 - Straight Blank1.058*********1.058
Savage Small Shank#13 - Hunter1.0584.000******.750
Savage Small Shank#14 - Light Varmint1.0585.000******.875
Savage Small Shank#15 - Heavy Varmint1.0585.000******.900
Savage Small Shank#16 - Heavy Palma1.0582.5001.0005.000.900
Savage Small Shank#17 - Standard Palma1.0582.500.9205.000.820
Savage Small Shank#18 - Light Palma1.0582.500.9005.000.750
Savage Small Shank#19 - Rem Standard1.0583.000.7607.000.660
Savage Small Shank#20 - Rem Sendero1.0583.000.9405.500.830
Savage Small Shank#21 - Rem Mag Sporter1.0583.000.8405.900.660
Savage Small Shank#22 - Savage Sporter1.0584.000******.590
Savage Small Shank#23 - Savage Magnum1.0584.000******.690
Savage Small Shank#24 - Savage Varmint1.0584.000******.810
Savage Small Shank#25 - Savage Bull1.0584.000******1.000
Savage Small Shank#30 - M24/M401.0583.000******.900
*NOTE: CONTOURS #22-25 ARE THE SAME AS #26-29 WITH THE EXCEPTION OF SHANK SIZES
       
SAVAGE BARREL CONTOURS - LARGE SHANK
Barrel TypeContour #/NameA (Shank):B:C:D:E:
Savage Large Shank#1 - Featherweight1.1202.000.7606.000.560
Savage Large Shank#2 - Light Sporter1.1202.750.7606.000.560
Savage Large Shank#3 - Standard Sporter1.1202.750.8006.000.600
Savage Large Shank#4 - Medium Sporter1.1202.750.8306.000.630
Savage Large Shank#5 - Heavy Sporter1.1202.750.8706.000.670
Savage Large Shank#6 - Bull Sporter1.1202.750.9006.000.700
Savage Large Shank#7 - Heavy Bull Sporter1.1202.7501.0006.000.750
Savage Large Shank#8 - Light Target1.1202.750******.750
Savage Large Shank#9 - Standard Target1.1202.750******.820
Savage Large Shank#10 - Heavy Target1.1202.750******.875
Savage Large Shank#11 - MTU1.1202.750******.930
Savage Large Shank#12 - Straight Blank1.120*********1.120
Savage Large Shank#13 - Hunter1.1204.000******.750
Savage Large Shank#14 - Light Varmint1.1205.000******.875
Savage Large Shank#15 - Heavy Varmint1.1205.000******.900
Savage Large Shank#16 - Heavy Palma1.1202.5001.0005.000.900
Savage Large Shank#17 - Standard Palma1.1202.500.9205.000.820
Savage Large Shank#18 - Light Palma1.1202.500.9005.000.750
Savage Large Shank#19 - Rem Standard1.1203.000.7607.000.660
Savage Large Shank#20 - Rem Sendero1.1203.000.9405.500.830
Savage Large Shank#21 - Rem Mag Sporter1.1203.000.8405.900.660
Savage Large Shank#26 - Savage Big Sporter1.1204.000******.590
Savage Large Shank#27 - Savage Big Magnum1.1204.000******.690
Savage Large Shank#28 - Savage Big Varmint1.1204.000******.810
Savage Large Shank#29 - Savage Big Bull1.1204.000******1.000
Savage Large Shank#30 - M24/M401.1203.000******.900
*NOTE: CONTOURS #22-25 ARE THE SAME AS #26-29 WITH THE EXCEPTION OF SHANK SIZES
       
CONTOURED BLANK DIMENSIONS
Barrel TypeContour #/NameA (Shank):B:C:D:E:
Contoured Blank#1 - Featherweight1.2202.000.7606.000.560
Contoured Blank#2 - Light Sporter1.2202.750.7606.000.560
Contoured Blank#3 - Standard Sporter1.2202.750.8006.000.600
Contoured Blank#4 - Medium Sporter1.2202.750.8306.000.630
Contoured Blank#5 - Heavy Sporter1.2202.750.8706.000.670
Contoured Blank#6 - Bull Sporter1.2202.750.9006.000.700
Contoured Blank#7 - Heavy Bull Sporter1.2202.7501.0006.000.750
Contoured Blank#8 - Light Target1.2202.750******.750
Contoured Blank#9 - Standard Target1.2202.750******.820
Contoured Blank#10 - Heavy Target1.2202.750******.875
Contoured Blank#11 - MTU1.2202.750******.930
Contoured Blank#12 - Straight Blank1.220*********1.220
Contoured Blank#13 - Hunter1.2204.000******.750
Contoured Blank#14 - Light Varmint1.2205.000******.875
Contoured Blank#15 - Heavy Varmint1.2205.000******.900
Contoured Blank#16 - Heavy Palma1.2202.5001.0005.000.900
Contoured Blank#17 - Standard Palma1.2202.500.9205.000.820
Contoured Blank#18 - Light Palma1.2202.500.9005.000.750
Contoured Blank#19 - Rem Standard1.2203.000.7607.000.660
Contoured Blank#20 - Rem Sendero1.2203.000.9405.500.830
Contoured Blank#21 - Rem Mag Sporter1.2203.000.8405.900.660
Contoured Blank#22 - Savage Sporter1.2204.000******.590
Contoured Blank#23 - Savage Magnum1.2204.000******.690
Contoured Blank#24 - Savage Varmint1.2204.000******.810
Contoured Blank#25 - Savage Bull1.2204.000******1.000
Contoured Blank#26 - Savage Big Sporter1.2204.000******.590
Contoured Blank#27 - Savage Big Magnum1.2204.000******.690
Contoured Blank#28 - Savage Big Varmint1.2204.000******.810
Contoured Blank#29 - Savage Big Bull1.2204.000******1.000
Contoured Blank#30 - M24/M401.2003.000******.900
*NOTE: CONTOURS #22-25 ARE THE SAME AS #26-29
(Are normally used to differentiate Savage contours to their appropriate Savage shank size)
       
REMINGTON 700 BARREL CONTOURS - Rem/Ages
Barrel TypeContour #/NameA (Shank):B:C:D:E:
RemAge#1 - Featherweight1.0622.000.7606.000.560
RemAge#2 - Light Sporter1.0622.750.7606.000.560
RemAge#3 - Standard Sporter1.0622.750.8006.000.600
RemAge#4 - Medium Sporter1.0622.750.8306.000.630
RemAge#5 - Heavy Sporter1.0622.750.8706.000.670
RemAge#6 - Bull Sporter1.0622.750.9006.000.700
RemAge#7 - Heavy Bull Sporter1.0622.7501.0006.000.750
RemAge#8 - Light Target1.0622.750******.750
RemAge#9 - Standard Target1.0622.750******.820
RemAge#10 - Heavy Target1.0622.750******.875
RemAge#11 - MTU1.0622.750******.930
RemAge#12 - Straight Blank1.062*********1.062
RemAge#13 - Hunter1.0624.000******.750
RemAge#14 - Light Varmint1.0625.000******.875
RemAge#15 - Heavy Varmint1.0625.000******.900
RemAge#16 - Heavy Palma1.0622.5001.0005.000.900
RemAge#17 - Standard Palma1.0622.500.9205.000.820
RemAge#18 - Light Palma1.0622.500.9005.000.750
RemAge#19 - Rem Standard1.0623.000.7607.000.660
RemAge#20 - Rem Sendero1.0623.000.9405.500.830
RemAge#21 - Rem Mag Sporter1.0623.000.8405.900.660
RemAge#22 - Savage Sporter1.0624.000******.590
RemAge#23 - Savage Magnum1.0624.000******.690
RemAge#24 - Savage Varmint1.0624.000******.810
RemAge#25 - Savage Bull1.0624.000******1.000
RemAge#26 - Savage Big Sporter1.0624.000******.590
RemAge#27 - Savage Big Magnum1.0624.000******.690
RemAge#28 - Savage Big Varmint1.0624.000******.810
RemAge#29 - Savage Big Bull1.0624.000******1.000
RemAge#30 - M24/M401.0623.000******.900
*NOTE: CONTOURS #22-25 ARE THE SAME AS #26-29
(Are normally used to differentiate Savage contours to their appropriate Savage shank size)
       
RUGER PRECISION RIFLE (RPR) CONTOURS
Barrel TypeContour & Barrel LengthA (Shank):B:C:D:E:
Ruger Precision Rifle#1 - Ruger Tactical 20"1.000N/A.900***.750
Ruger Precision Rifle#2 - Ruger Sendero 24"1.000N/A.940***.830
Ruger Precision Rifle#3 - Ruger 24"1.000N/A******.750
Ruger Precision Rifle#4 - Ruger Hunter 22"1.0004.000******.750
Ruger Precision Rifle#5 - Ruger Heavy 26"1.000*********1.000

 

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CARBON FIBER CONTOURED BLANK CONTOURS 

#1. Lightweight - A) 1.220", B) 2.75", C) 1.070", D) 3.75", E) 1.070"

#2. Heavy - A) 1.250", full blank length (STRAIGHT CONTOUR)

#3. Ultralight - A) 1.220", B) 2.75", C) .990", D) 3.75", E) .990" 

Carbon Fiber Contour Blank Contours 

***

CARBON FIBER BOLT-ACTION PREFIT CONTOURS 

#1. Ultralight/Lightweight - A) SHANK DIA*, B) 2.75", C) .990", D) 3.75", E) .990" (Disregarding Shank Diameter, same as #3 above)

#2. Medium-Light - A) SHANK DIA*, B) 2.75", C) 1.070", D) 3.75", E) 1.070" (Disregarding Shank Diameter, same as #1 above in Carbon Fiber Contoured Blank listed contours)

  *Shank Diameters vary per design format, see below: 

       1.000" (Tikka/Ruger American with 1.150" Semi-Shoulder/RPR)

       1.058" (Savage/Rem783/Bighorn)

       1.062" (Rem700 "RemAge")

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AR BARREL CONTOURS
Barrel TypeContour NameA (Shank):B:C: (GB Journal)D: (GB length)  E:
AR15Spaghetti.980.600(.750step) .6251.00".600
AR15Lightweight.980.700(.875step) .7501.00".700
AR15SPR.980.850.7501.92".730
AR15HBAR.980.980.7501.92".730
AR15SOCOM Heavy.980.850(.925step) .8751.92".850
AR15Heavy.980.980.8751.92".850
AR15SOCOM Bull.980.925(.975step) .9361.92".925
AR15Bull.980.980.9361.92".925
       
AR10Spaghetti***************
AR10Lightweight1.150.700(.875step) .7501.00".700
AR10SPR1.150.850.7501.92".730
AR10HBAR1.150.980.7501.92".740
AR10SOCOM Heavy1.150.850(.950 step) .8751.92".850
AR10Heavy1.150.980.8751.92".850
AR10SOCOM Bull1.150.925(.975step) .9361.92".925
AR10Bull1.150.980.9361.92".925

 

In some instances, the gas block journal length (D) will be 1" long on contours where it would otherwise normally be 1.92" long. 

This can be due to overall barrel length, as typically extremely short barrels will have the 1" long GB journal instead of the 1.92".

 

Some AR Barrel contours, notably the spaghetti and lightweight, will have a step near the muzzle (on threaded barrels) to increase diameter slightly to maintain enough of a contact surface for a muzzle device.