SAAMI New Cartridge & Chamber
Maximum Average Pressure (MAP)* = 65,000 psi Instrumental Velocity: 225-gr @ 2,800 fps
Crusher pressures not established.
* Refer to ANSI/SAAMI Z299.4 for pressure guideline interpretation description.
ISSUED: 06/13/2018 300 Precision Rifle Cartridge [300 PRC] REVISED: - -/- -/- - - -
.037 + .010 CARTRIDGE
(0.94 + 0.25) UNLESS OTHERWISE NOTED
.5150
.034 - .010 *
(13.080)
.420 B
(10.67)
BODY DIA. -.008 (0.20)
(0.86 – 0.25)
.050 - .010
.5320 (13.513)
.5165 (13.119)
.341
(8.66) *
(1.27 – 0.25) .341 .3084 - .0030
(866) (7.833 – 0.076)
35°+20° 35°-6° 30° B
BULLET(1)
.030 + .050 R
(0.76 + 1.27)
.125 (3.18) R MAX
.200 B 1.750 (44.45) B
(13.51 – 0.25)
(12.07 – 0.51)
(5.08)
.532 - .010
.475 - .020
2.1217 (53.892)
*
2.204 - .007 (55.98 - 0.18)
2.2724 (57.719)
*
2.580 - .020 (65.53 – 0.51)
3.575 (90.81) MIN – 3.700 (93.98) MAX
.420 (10.67) B .3430 (8.712)
* .300 (7.62)
.3420 (8.687) Bore Dia.
.5160 (13.107)
*
.5175 (13.145) .3088 (7.844) .308 (7.82)
.5330 (13.538) Groove Dia.
.3088 (7.844)
45° B
30° B
.5348
(13.58) .030 (0.76) R MAX 1°30' B
.200 B 1.750 (44.45) B
.125 + .030 R
(5.08) CHAMBER
*
(3.18 + 0.76)
2.1168 (53.768)
UNLESS OTHERWISE NOTED
2.2000 + .0100 (55.880 + 0.254) ALL DIA +.002 (0.05)
LENGTH TOL. +.015 (0.38)
BREECH
BOLT
2.2667 (57.574)
*
FACE 2.5874 (65.720)
6 GROOVES
2.6040 (66.142) .115 +.002 [2.92+0.05] WIDE
TWIST: 8.50 [215.9] R.H. OPTIONAL
2.8368 (72.055) MIN. BORE & GROOVE AREA:
.0735 SQ. IN. [47.419 mm²]
3.005 (76.32)
DO NOT SCALE FROM DRAWING
NOTE:
B = BASIC (XX.XX) = MILLIMETERS = HEADSPACE DIMENSION
= REFERENCE DIMENSION
*
= DIMENSIONS ARE TO INTERSECTION OF LINES
ALL CALCULATIONS APPLY AT MAXIMUM MATERIAL CONDITION (MMC)
(1) – BULLET PROFILE IS SHOWN FOR ILLUSTRATIVE PURPOSES ONLY
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