Um, I have migrated on to VV N 165 in my 5,6X61R trek and have worked up from 41.5 grains to 45 grains of VV N 165 which nets an average velocity of right @ 3100 ft/s. You can run all these programs in the fantasy / pushbutton world, which does indeed make it a bit simplier, but empirical data is where I have firm footing....

Once you break the 3000 ft/s threshold, with whatever propellant you chose, this cartridge just seem to perform the same: hitting in the same spot, albeit w/ iron sights.


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Above is a Date Syrup Can that I use specifically for the final shot of a series. Now all these holes are from the same bullet weight but different propellants & different loads. On my last shot w/ 45 grains of VV N 165 I hit in the same hole as a previous load(I have a foto of the reverse side if there are any Doubting Thomas' out there......). I have shot the cartridge enough that when you break the 3000 ft/s - 3100 ft/s threshold, I can just tell by the recoil where we are. Can the new fangled bullet/powder program discern that?

I think by the time I approach 3200 ft/s - 3300 ft/s, VV N 165 is going to nicely fill the case. This maybe a necessity and possibly warrant a Magnum Primer, but I haven't gotten to that point just yet. My hopes are to see similar success w/ VV N 170. But to press the envelope forward this, I will need Glass atop the gun & they will take some time.


Hochachtungsvoll,,


Raimey
rse