257 Roberts - 100 Grain

Caliber
Diameter
Weight & Style
Ballistic Coefficient
Sectional Density
Part #
25
.257"
100Gr. Spitzer
0.393
0.216
OAL 1.115
25100
25
.257"
100Gr. Spitzer
0.377
0.216
OAL 1.035
16317
Case Type:
Cart. Max. OAL:
Primer Type:
Barrel Length/Make:
Barrel Twist:
Winchester
2.780"
CCI 200
24" Lilja
1-10"
Powder Type:
Powder Charge Grains
Muzzle Velocity:
F.P.S. / M.P.S. (Feet Per Second / Meters Per Second)
Load Density: (Volume)
A-2520
Max. 37.5*
35.5
33.5
2862 / 872
2737 / 834
2612 / 796
74%
70%
66%
IMR4320
Max. 37.0*
35.0
33.0
2950 / 899
2810 / 856
2670 / 813
76%
72%
68%
IMR4350
Max. 43.5
41.5
39.5*
3007 / 916
2913 / 887
2820 / 859
88%
84%
80%
H4831sc
Max. 48.0
46.0
44.0*
3009 / 917
2922 / 890
2824 / 860
96%
92%
88%
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