Be the first to review this product
SAC Modular Comparator - Headspace Inserts
%1 In Stock
SKU's
sac-138460
The Modular Headspace Comparator Insert offers unparalleled accuracy for cartridge headspace and bullet measurements. This innovative insert works seamlessly with the Modular Headspace Comparator Body (sold separately) to deliver a highly adaptable tool for precise measurements. Designed with the user in mind, this modular insert simplifies the process of measuring headspace with exceptional accuracy.
Short Action Customs has reimagined its original headspace comparator, made from 6061 aluminum, to create a superior Modular Headspace Comparator. This updated version supports cartridges up to 338 Lapua Magnum, providing greater versatility and ease of use. Each bullet and headspace insert is precision machined from 17-4 Stainless Steel, ensuring maximum durability and corrosion resistance.
Please see the below list for caliber compatability
204 Ruger
204 Ruger
223 Rem
223 Remington and 5.56mm NATO
222 Remington
Wildcat Cartridges necked down from the 223 Remington
22 Cal x 28°
22-250 Remington
Wildcat Cartridges necked down from the 22-250 Remington
22 Cal x 30°
22 Creedmoor
224 Valkyrie
22 ARC
22 PPC
22 Cal x 35°
22 GT (6GT necked down to 22 caliber)
FN 5.7x28mm
22 Cal x 40°
22 Dasher (Non-Alpha Chamber)
22 BRA
22-250 Ackley Improved
223 Ackley Improved
22 Alpha Dasher
.22 Cal Dasher with an Alpha Legacy Reamed Chamber
6mm x 20°
243 Winchester
Wildcat Cartridges necked down from the 243 Winchester
6mm x 26°
6mm Remington
6mm x 30°
6mm Creedmoor
6 x 47 Lapua
6BR
6BRX
6mm Super LR
6 ARC
6 PRC
6 XC
6 PPC
6mm x 35°
6GT
6mm x 284 Winchester
6mm x 40° 273” Neck Diameter, .060” Neck Shoulder Radius
6mm Dasher
6BRA (6mm BR Ackley Improved)
243 Ackley Improved
Any 6mm Cartridge with 40° Shoulder and a fired neck diameter smaller than .273”
6mm x 40° .275” Neck Diameter, .060” Neck Shoulder Radius
6mm Dasher
6BRA (6mm BR Ackley Improved)
243 Ackley Improved
Any 6mm Cartridge with 40° Shoulder and a fired neck diameter smaller than .275”
6mm x 40° 279″ Neck Diameter
6mm Ackley Improved cartridges with a fired neck diameter over .275″
6mm Alpha Dasher
6mm Dasher with an Alpha Legacy Reamed Chamber
25 Cal x 30°
25 Creedmoor
25 x 47 Lapua
25 PRC
25 SAUM
25 SST
25-06 Remington
25-06 Remington
257 Weatherby
257 Weatherby
6.5mm x 20°
260 Remington
6.5mm x 25°
264 Winchester Magnum
6.5mm x 30°
6.5 Creedmoor
6.5 x 47 Lapua
6.5 PRC
6.5 SAUM
6.5 Grendel
6.5mm x 35°
6.5 Winchester Short Magnum
6.5 x 284 Winchester
26 Nosler
6.5mm x 40°
260 Ackley Improved
6.5mm Wildcat cartridges with a 40 degree shoulder
6.5-06 Springfield
6.5-06 Springfield
6.5mm x 55mm Swedish
6.5mm x 55mm Swedish
270 Winchester
270 Winchester
27 Cal x 30°
277 Sig Fury
6.8x51mm
27 Cal x 35°
6.8 Western
270 WSM
280 Remington
280 Remington
7mm x 20°
7mm-08
7mm x 25°
7mm Remington Magnum
7mm STW
7mm x 30°
7mm SAUM
7mm Creedmoor
7mm LRM
7mm PRC
6.5mm PRCW
7mm SPRC
7mm SAW
7mm x 35°
28 Nosler
284 Winchester
7mm WSM
7mm/300 WSM
284 Shehane
7mm x 40°
7mm-08 Ackley Improved
280 Ackley Improved
7mm Wildcat cartridges with a 40 degree shoulder
7 TCU
.30 Cal x 20°
308 Winchester
Wildcat Cartridges necked down from the 308 Winchester
.30 Cal x 30°
300 Remington Ultra Mag
300 SAUM
300 PRC
30 BR
.30 Cal x 35°
300 Winchester Short Magnum
.30 Cal x 40°
300 Norma Magnum Ackley Improved
.30 Caliber Wildcat cartridges with a 40 degree shoulder
300 Blackout
300 AAC Blackout
30-06 Springfield
30-06 Springfield
300 Winchester Magnum
300 Winchester Magnum
300 Norma Magnum
300 Norma Magnum
300 Norma Magnum Improved 33°
300 Norma Magnum Improved 33°
338 Cal x 20°
338 Federal
338 Cal x 25°
338 Winchester Magnum
338 Cal x 30°
8.6 Blackout
338 RCM
338 Cal x 35°
33 Nosler
338 Cal x 40°
338 Lapua Magnum Ackley Improved
338 Norma Ackley Improved
300 Norma Ackley Improved
338 Lapua Magnum
338 Lapua Magnum
Wildcat Cartridges necked down from the 338 Lapua Magnum
338 Norma Magnum
338 Norma Magnum
Wildcat Cartridges necked down from the 338 Norma Magnum
33XC
33XC
37XC
37XC
375 Cheytac
375 Cheytac
375 Enabler
375 Enabler
375 Cal x 15³
375 H&H Magnum
375 Cal x 30³
Any .375 Cal Cartridge with a 30° Shoulder
Use the table below to choose the correct Datum Insert for your comparator.
If measuring for headspace off of a reamer print please select an insert from the below Datum gauge list
Datum A .330″
17 Remington
204 Ruger
220 Swift
221 Remington Fireball
222 Remington
222 Remington Magnum
223 Remington
Datum B .350″
22 PPC
22-250 Remington
6mm PPC
6mm Bench Rest Remington
250-3000 Savage
6mm ARC
6.5 Grendel
6.8 SPC
7mm Bench Rest Remington
300 Blackout
Datum C .375″
6mm Remington
25-06 Remington
257 Roberts
6.5 X 55mm Swedish
6.5 Creedmoor
6.5mm X 47 Lapua
270 Winchester
7 X 57mm Mauser
7mm Winchester Short Magnum
280 Remington
30-40 Krag
30-30 Winchester
30-06 Springfield
300 H & H Magnum
7.62 X 39mm, M43
32 Special
Datum D .400″
223 Winchester Super Short Magnum
243 Winchester
243 Winchester Super Short Magnum
260 Remington
270 Winchester Short Magnum
7mm-08 Remington
300 Savage
303 British
308 Winchester
35 Remington
Datum E .420
257 Weatherby
6.5mm-284
264 Winchester Magnum
7mm Remington Magnum
7mm Remington Ultra Magnum
7mm Remington Short Action Ultra Magnum
7mm Shooting Times Westerner
8mm Remington Magnum
8×57 Mauser
8x68mm
284 Winchester
300 Winchester Short Magnum
300 Weatherby Magnum
300 Remington Short Action Ultra Magnum
300 Winchester Magnum
300 Remington Ultra Magnum
7.62x54R
325 Winchester Short Magnum
338 Winchester Magnum
338 Remington Ultra Magnum
35 Whelen
9.32x62mm
375 H & H Magnum
| Barcode | sac-138460 |
|---|---|
| SKU's | sac-138460 |
| Brand | Short Action Customs |
Ratings & Reviews
FAQ - Frequently Asked Questions
Welcome to our purchasing FAQ! Here you'll find answers to our most asked questions regarding purchasing from us. If you are after Reloading FAQ's, please click HERE, where you can find more specific question and answers. Still can't find quite what you're looking for, or have something we should know? Send us an email, we're happy to help!
-
Q1: Do you ship to my country?
A1: European countries (All items except Ammunition, Powders, Primer, Cases & Projectiles)
-
Q2: How much do I pay for shipping?
A2: The shipping charge will be added to your order and visible on your receipt before you check out. The shipping is based on the destination country. You’ll get free shipping on orders above a certain amount.
Free shipping on orders above: £50 for mainland UK next day deliveries.
France - £25
Norway – £45
Finland – £46
Germany – £25
UK – £5 (Free UK Mainland with purchases over £50)
Rest of the EU – £25-100
Global – £100-200 -
Q3: What are the accepted payment methods?
A3: We accept online card payment with MasterCard, VISA, Worldpay or Bank Direct Debit
-
Q4: What currency do I pay in?
A4: The currencies used are GBP, EUR & USD The currency is chosen automatically depending on your shipping country.
-
Q5: When do I receive my order?
A5: We dispatch all orders in 1-2 business days with DPD & Parcelforce, delivery time will depend on the shipping country and address.
-
Q6: Do I have to pay international taxes and duties?
A6: Your order may be subject to import duties and taxes, which are levied once a shipment reaches your country. We cannot control and is not responsible for any duties/taxes applied to your package upon delivery. You will be responsible for paying additional charges for customs clearance. Customs policies vary widely from country to country; please contact your local customs office for further information.
- Set up your reloading bench where it (and stored components) will not be exposed to heat, sparks or flame.
- Establish a comfortable loading procedure and don't vary it.
- Keep your reloading bench, equipment and area clean and uncluttered. Label components and reloads for safe, easy identification. Never use powder from an unlabelled tin.
- Understand what you are doing and why it must be done in a specific way.
- Follow loading recommendations exactly. Don't substitute components for those listed in metallic data without reducing the load and working back up.
- Never substitute smokeless powder for black powder or Pyrodex because smokeless powder is much more powerful than black powder. Never mix two powders together.
- Wear safety glasses.
- Stay alert when reloading. Don't reload when distracted, disoriented or tired.
- Don't smoke, drink alcohol or take drugs while reloading or while in your reloading area.
- Keep everything out of reach of small children.
| Rifle Calibre Name | Common Metric Name | Bullet Diameter |
| .17 | 4.5mm | .172" |
| .204 | 5.2mm | .204" |
| .223 | 5.56mm | .224" |
| .22 (Rimfire) | 5.6mm | .223" |
| .22 (Centrefire) | 5.6mm | .224" |
| .243 | 6mm | .243" |
| .257 | 6.53mm | .257" |
| .260 | 6.5mm | .264" |
| .270 | 6.8mm | .277" |
| .280 | 7mm | .284" |
| .30 | 7.62mm | .308" |
| .325 | 8mm | .323" |
| .33 | 8.6mm | .338" |
| .366 | 9.3mm | .366 |
| .375 | 9.5mm | .375" |
| .416 | 10.6mm | .416" |
| .50 | 13mm | .510" |
Ratings & Reviews
Be the first to review this product
More from Short Action Customs
