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Fired off 3 x three shot groups of 232 grain Norma Vulcan projectiles in my 9.3x62. All were seated to the base of the neck making a very short round. 61 grains 2208 1.630" two hole group 2,627fps 62 grains 2208 2.030" One shot pulled and called 2,667fps 63 grains 2208 1.580" Triangular group Velocity N/K Primers were in no way flattened in my rifle but recoil was ... mmmm ... Stout. My sample does not give a true indication of velocity but does give a rough idea of their speed. I will try some different seating depths next. 63 grains is approaching 100% load density and requires a few taps to settle the powder. RE-15 maybe also be an option. | ||
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I found the OAL just off the lands was 80.5mm. Not far off Normas recommended 80mm. Re-15 is rated as slower than 2208 and in the 9.3x62 it is, but only marginally. I loaded 63 grains of RE-15 and found I could get more RE-15 in the case than 2208. With a gusting head wind and dark skys threatening imminent rain I headed out to the range with the Chronograph, again. Average velocity was 2,616 fps and a vertical stringing three shot group went into 1.830" with two holes close. Not bad as by #4 Reticle has vertical and horizontal cross hairs that cover 2" at 100 yards. SD of this projectile is 0.249 and the BC is 0.267. It has the aerodynamics of a brick. I will load some more in a week or two and try 64 and 65 grains, then longer distances. 200 and 300 yards. I love the point on these conventional constructed Vulcans. The tip is inverted and the jacket wall is thinner at the front. | |||
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