SA/SR Hammer

[sewwhat89]

I have been playing with the various wildcats based off the 308. I have a question about some case designs.

338-08 - 250 gr SMK
9.3-08 - 250 gr NBT/AFRAME
375-08 - 250 gr AFRAME/260 gr NAB

Assuming all things equal, the 375 should be able to drive the 250 gr bullets the fastest right?

9.3-08 250 gr NBT, BC .494, MV 2300

Muzzle -1.5 2300 2936 0.0
25 -0.1 2259 2833 0.1
50 0.8 2219 2732 0.2
75 1.3 2178 2634 0.5
100 1.4 2138 2538 0.9
125 0.9 2099 2445 1.4
150 0.0 2060 2355 2.0
175 -1.4 2021 2267 2.7
200 -3.4 1983 2182 3.6
225 -5.9 1945 2100 4.5
250 -9.0 1908 2020 5.7

.338-08 250 gr SMK, BC .587, MV 2300

Muzzle -1.5 2300 2936 0.0
25 -0.1 2266 2849 0.0
50 0.8 2231 2764 0.2
75 1.3 2197 2680 0.4
100 1.3 2164 2598 0.7
125 0.9 2130 2519 1.1
150 0.0 2097 2441 1.6
175 -1.4 2064 2364 2.2
200 -3.3 2031 2290 3.0
225 -5.7 1999 2218 3.8
250 -8.7 1967 2147 4.7

.375-08 260 gr NAB, BC .473, MV 2300

Muzzle -1.5 2300 3054 0.0
25 -0.1 2257 2941 0.1
50 0.8 2215 2832 0.2
75 1.3 2173 2726 0.5
100 1.4 2131 2622 0.9
125 0.9 2090 2522 1.4
150 0.0 2049 2424 2.1
175 -1.5 2009 2330 2.8
200 -3.4 1969 2239 3.7
225 -6.0 1930 2150 4.8
250 -9.1 1891 2064 5.9

 

[abinok]

Yes, the larger caliber on the same case will have higher velocity... all things being equal.