Cartridge Diagrams

Dimensions in Inches. Dotted Grids are 1/2″ square.


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6mm BR | 6BRX | 6 Dasher | 6 PPC | 6×47 SM | 6XC | 243 Win | 243 AI | 243 WSSM | 6mm Rem

204 Ruger | 221 Fireball | 222 Rem | 223 Rem | 22 PPC | 22-250

6.5 Grendel | 260 Rem | 6.5×55 | 6.5-284

284 Win | 7mm SAUM | 7mm WSM | 308 Win | 300 WSM | 30-06 | 300 WM | 338 LM

WARNING: Case Diagrams are provided for illustration purposes only. Do NOT use the dimensions on these diagrams to calculate pressures or internal ballistics. Measure your actual cases and use the data supplied by the cartridge maker and the propellant manufacturer. Do NOT substitute these drawings for official SAMMI or CIP specifications.Do NOT use these diagrams as the basis for creating reamers or tools. Actual production brass may vary slightly from these measurements. It’s best to send in actual dummy brass cases when having a reamer made.


6mm BR Norma

6mm BRX
This shows a no-turn neck. Actual neck length and diameter may vary slightly after fire-forming.

6mm Dasher
This shows a no-turn neck. Actual neck length and diameter may vary slightly after fire-forming.

6 PPC (tight neck)


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6×47 Swiss Match

6XC TUBB

.243 Winchester

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.243 Ackley Improved

.243 Winchester Super Short Mag

6mm Remington

.204 Ruger

.221 Fireball

.222 Remington
.222 Remington Rem Diagram

.223 Remington


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22 PPC

22-250

6.5 Grendel

260 Remington

6.5×55 Swede

6.5-284 Norma

.284 Winchester

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7mm Remington S.A. Ultra-Mag
7mm Rem SAUM short action ultra mag

7mm Winchester Short Magnum

.308 Winchester

.300 Winchester Short Magnum
300 Win Short Mag diagram

.30-06 Springfield
30-06 Springfield diagram

300 Winchester Magnum
300 Win Mag diagram

338 Lapua Magnum
338 Lapua Mag diagram

Diagrams generated using QuickDESIGN software program, used with permission.
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