Easy-to-use ammo measurement system gives you the data you need to refine your case sizing operations.(A caliper is required.)

Provides a relative measurement between the base of a case to a datum point on its shoulder angle. May be used:

  • Before sizing operations to find the optimal headspace for your firearm
  • After sizing operations to check the setup and consistency of your reloading process

Cartridges available separately. Also sold is the Datum Dial Kit with Cartridge Dials #1 and #2 included.

Features

  • Easily interchangeable dials: case and bullet/cartridge dials provide quick measurement of different calibers
  • Consists of only four components: provides the same caliber coverage as other products with many more components
  • Covers multiple calibers: competing products can require the purchase of a separate kit for each caliber needed
  • Measurement is exact variation: no need to subtract body plus bushing/insert length from each measurement
  • Durable plastic storage box: room for extra setup, keeps all components together and protected
APERTURE/DATUM DIA. CASE CALIBER

.330″

 17 Rem; 204 Ruger; 22 Nosler; 220 Swift; 221 Fireball; 222 Rem;
222 Rem Mag; 223 Rem; 6mm x 45

.350″

 22 BR; 22 PPC; 22-250; 225 Win; 6mm BR; 6mm Dasher; 6mm PPC;
6mm PPC/Wild; 250 Sav; 6.5 Grendel; 300 AAC Blackout

.375″

 6mm GT; 6mm Rem (244); 6mm XC; 25-06 Rem; 257 Roberts;
6 x 47 Lapua; 6.5 x 47 Lapua; 6.5 x 57 Mauser; 6.5 x 55; 270 Win;
7 x 57 Mauser; 280 Rem (7mm Exp); 30-06 Springfield; 30-30 Win;
300 H&H Mag; 303 British; 30-40 Krag; 32 Win Spec

.400″

 243 Win; 260 Rem; 6 / 6.5 Creedmoor; 270 WSM; 7mm-08 Rem;
308 Win;308 National Match

.420″

 264 Win; 26 Nosler; 6.5-284; 6.5 PRC; 7mm Rem Mag; 7mm RUM;
7mm STW; 7mm WSM; 28 Nosler; 284 Win; 30-338 Win Mag;
300 Norma; 300 PRC; 300 Ultra Mag; 300 Win Mag; 300 WSM;
8mm Rem Mag; 338 Win Mag; 375 H&H

Included in the Box:

  • Datum Dial tool for checking cartridge cases
  • Chart showing common datum diameters
  • Instructions
  • Storage box
  • Cartridges not included.
SKU FORDD1010
Model # DD1010
Brand Forster

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