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 – Featherweight1.0582.000.7606.000.560Savage Small Shank#2 – Light Sporter1.0582.750.7606.000.560Savage Small Shank#3 – Standard Sporter1.0582.750.8006.000.600Savage Small Shank#4 – Medium Sporter1.0582.750.8306.000.630Savage Small Shank#5 – Heavy Sporter1.0582.750.8706.000.670Savage Small Shank#6 – Bull Sporter1.0582.750.9006.000.700Savage Small Shank#7 – Heavy Bull Sporter1.0582.7501.0006.000.750Savage Small Shank#8 – Light Target1.0582.750******.750Savage Small Shank#9 – Standard Target1.0582.750******.820Savage Small Shank#10 – Heavy Target1.0582.750******.875Savage Small Shank#11 – MTU1.0582.750******.930Savage Small Shank#12 – Straight Blank1.058*********1.058Savage Small Shank#13 – Hunter1.0584.000******.750Savage Small Shank#14 – Light Varmint1.0585.000******.875Savage Small Shank#15 – Heavy Varmint1.0585.000******.900Savage Small Shank#16 – Heavy Palma1.0582.5001.0005.000.900Savage Small Shank#17 – Standard Palma1.0582.500.9205.000.820Savage Small Shank#18 – Light Palma1.0582.500.9005.000.750Savage Small Shank#19 – Rem Standard1.0583.000.7607.000.660Savage Small Shank#20 – Rem Sendero1.0583.000.9405.500.830Savage Small Shank#21 – Rem Mag Sporter1.0583.000.8405.900.660Savage Small Shank#22 – Savage Sporter1.0584.000******.590Savage Small Shank#23 – Savage Magnum1.0584.000******.690Savage Small Shank#24 – Savage Varmint1.0584.000******.810Savage Small Shank#25 – Savage Bull1.0584.000******1.000Savage 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 SHANKBarrel TypeContour #/NameA (Shank):B:C:D:E:Savage Large Shank#1 – Featherweight1.1202.000.7606.000.560Savage Large Shank#2 – Light Sporter1.1202.750.7606.000.560Savage Large Shank#3 – Standard Sporter1.1202.750.8006.000.600Savage Large Shank#4 – Medium Sporter1.1202.750.8306.000.630Savage Large Shank#5 – Heavy Sporter1.1202.750.8706.000.670Savage Large Shank#6 – Bull Sporter1.1202.750.9006.000.700Savage Large Shank#7 – Heavy Bull Sporter1.1202.7501.0006.000.750Savage Large Shank#8 – Light Target1.1202.750******.750Savage Large Shank#9 – Standard Target1.1202.750******.820Savage Large Shank#10 – Heavy Target1.1202.750******.875Savage Large Shank#11 – MTU1.1202.750******.930Savage Large Shank#12 – Straight Blank1.120*********1.120Savage Large Shank#13 – Hunter1.1204.000******.750Savage Large Shank#14 – Light Varmint1.1205.000******.875Savage Large Shank#15 – Heavy Varmint1.1205.000******.900Savage Large Shank#16 – Heavy Palma1.1202.5001.0005.000.900Savage Large Shank#17 – Standard Palma1.1202.500.9205.000.820Savage Large Shank#18 – Light Palma1.1202.500.9005.000.750Savage Large Shank#19 – Rem Standard1.1203.000.7607.000.660Savage Large Shank#20 – Rem Sendero1.1203.000.9405.500.830Savage Large Shank#21 – Rem Mag Sporter1.1203.000.8405.900.660Savage Large Shank#26 – Savage Big Sporter1.1204.000******.590Savage Large Shank#27 – Savage Big Magnum1.1204.000******.690Savage Large Shank#28 – Savage Big Varmint1.1204.000******.810Savage Large Shank#29 – Savage Big Bull1.1204.000******1.000Savage 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 DIMENSIONSBarrel TypeContour #/NameA (Shank):B:C:D:E:Contoured Blank#1 – Featherweight1.2202.000.7606.000.560Contoured Blank#2 – Light Sporter1.2202.750.7606.000.560Contoured Blank#3 – Standard Sporter1.2202.750.8006.000.600Contoured Blank#4 – Medium Sporter1.2202.750.8306.000.630Contoured Blank#5 – Heavy Sporter1.2202.750.8706.000.670Contoured Blank#6 – Bull Sporter1.2202.750.9006.000.700Contoured Blank#7 – Heavy Bull Sporter1.2202.7501.0006.000.750Contoured Blank#8 – Light Target1.2202.750******.750Contoured Blank#9 – Standard Target1.2202.750******.820Contoured Blank#10 – Heavy Target1.2202.750******.875Contoured Blank#11 – MTU1.2202.750******.930Contoured Blank#12 – Straight Blank1.220*********1.220Contoured Blank#13 – Hunter1.2204.000******.750Contoured Blank#14 – Light Varmint1.2205.000******.875Contoured Blank#15 – Heavy Varmint1.2205.000******.900Contoured Blank#16 – Heavy Palma1.2202.5001.0005.000.900Contoured Blank#17 – Standard Palma1.2202.500.9205.000.820Contoured Blank#18 – Light Palma1.2202.500.9005.000.750Contoured Blank#19 – Rem Standard1.2203.000.7607.000.660Contoured Blank#20 – Rem Sendero1.2203.000.9405.500.830Contoured Blank#21 – Rem Mag Sporter1.2203.000.8405.900.660Contoured Blank#22 – Savage Sporter1.2204.000******.590Contoured Blank#23 – Savage Magnum1.2204.000******.690Contoured Blank#24 – Savage Varmint1.2204.000******.810Contoured Blank#25 – Savage Bull1.2204.000******1.000Contoured Blank#26 – Savage Big Sporter1.2204.000******.590Contoured Blank#27 – Savage Big Magnum1.2204.000******.690Contoured Blank#28 – Savage Big Varmint1.2204.000******.810Contoured Blank#29 – Savage Big Bull1.2204.000******1.000Contoured 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/AgesBarrel TypeContour #/NameA (Shank):B:C:D:E:RemAge#1 – Featherweight1.0622.000.7606.000.560RemAge#2 – Light Sporter1.0622.750.7606.000.560RemAge#3 – Standard Sporter1.0622.750.8006.000.600RemAge#4 – Medium Sporter1.0622.750.8306.000.630RemAge#5 – Heavy Sporter1.0622.750.8706.000.670RemAge#6 – Bull Sporter1.0622.750.9006.000.700RemAge#7 – Heavy Bull Sporter1.0622.7501.0006.000.750RemAge#8 – Light Target1.0622.750******.750RemAge#9 – Standard Target1.0622.750******.820RemAge#10 – Heavy Target1.0622.750******.875RemAge#11 – MTU1.0622.750******.930RemAge#12 – Straight Blank1.062*********1.062RemAge#13 – Hunter1.0624.000******.750RemAge#14 – Light Varmint1.0625.000******.875RemAge#15 – Heavy Varmint1.0625.000******.900RemAge#16 – Heavy Palma1.0622.5001.0005.000.900RemAge#17 – Standard Palma1.0622.500.9205.000.820RemAge#18 – Light Palma1.0622.500.9005.000.750RemAge#19 – Rem Standard1.0623.000.7607.000.660RemAge#20 – Rem Sendero1.0623.000.9405.500.830RemAge#21 – Rem Mag Sporter1.0623.000.8405.900.660RemAge#22 – Savage Sporter1.0624.000******.590RemAge#23 – Savage Magnum1.0624.000******.690RemAge#24 – Savage Varmint1.0624.000******.810RemAge#25 – Savage Bull1.0624.000******1.000RemAge#26 – Savage Big Sporter1.0624.000******.590RemAge#27 – Savage Big Magnum1.0624.000******.690RemAge#28 – Savage Big Varmint1.0624.000******.810RemAge#29 – Savage Big Bull1.0624.000******1.000RemAge#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) CONTOURSBarrel TypeContour & Barrel LengthA (Shank):B:C:D:E:Ruger Precision Rifle#1 – Ruger Tactical 20″1.000N/A.900***.750Ruger Precision Rifle#2 – Ruger Sendero 24″1.000N/A.940***.830Ruger Precision Rifle#3 – Ruger 24″1.000N/A******.750Ruger Precision Rifle#4 – Ruger Hunter 22″1.0004.000******.750Ruger 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 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 CONTOURSBarrel TypeContour NameA (Shank):B:C: (GB Journal)D: (GB length) E:AR15Spaghetti.980.600(.750step) .6251.00″.600AR15Lightweight.980.700(.875step) .7501.00″.700AR15SPR.980.850.7501.92″.730AR15HBAR.980.980.7501.92″.730AR15SOCOM Heavy.980.850(.925step) .8751.92″.850AR15Heavy.980.980.8751.92″.850AR15SOCOM Bull.980.925(.975step) .9361.92″.925AR15Bull.980.980.9361.92″.925 AR10Spaghetti***************AR10Lightweight1.150.700(.875step) .7501.00″.700AR10SPR1.150.850.7501.92″.730AR10HBAR1.150.980.7501.92″.740AR10SOCOM Heavy1.150.850(.950 step) .8751.92″.850AR10Heavy1.150.980.8751.92″.850AR10SOCOM Bull1.150.925(.975step) .9361.92″.925AR10Bull1.150.980.9361.92″.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.
