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The 162s in both guns were a good foot higher than the 180s were.
So there is no question that velocity trumps a higher BC at least to some point.
And the point also is, after a certain distance with any cartridge, there is no point to a heavier higher BC bullet.
Move on to a larger case holding more powder if you want more performance.
Did you check for POI differences at your zero distance? That will certain affect any POI difference at extended distance. Regardless, difference in drop is not really the point of choosing a high-BC bullet. How did they compare in wind drift?
Your comment about velocity trumping BC depends entirely on the difference in muzzle velocity and the difference in BC, as well as the distance at which they are compared.
Your final point is actually the opposite of the truth. BC advantages become more and more evident as distance increases.
Well yes, actually we are aware that different bullets require different zeroing.
And the differences at 100 yards arent always much different are they?
Most of the time, the difference in zero at 100 yards becomes a substantial difference at 1000+.
And yes BC has more advantage (provided) there is velocity to sustain it.
Not sure I understand your point here. BC is simply a number that quantifies the relative drag forces a particular bullet experiences when in flight. Simply put, the higher the BC value, the less a bullet’s muzzle velocity will be lost in transit to the target, and the less the bullet is affected by the air (including wind). Velocity is a diminishing resource, while BC, like a diamond, is forever (relatively speaking).
But im just relating our experience, and i would suggest that others do like wise.
Rather than just swallow a bunch of gobbley goop your apt to read on the internet…
…And our testing proved that at least to us.
Again, i strongly suggest that others do likewise.
Testing is important, but its utility depends critically on understanding what is being tested and the results. Otherwise, incorrect conclusions are drawn, and faulty reasoning embraced. Testing the effects of changing certain variables (like bullet and muzzle velocity) on something like trajectory, requires other variables (like zero distance) to be controlled for meaningful results to be obtained.
The bigger issue is that there comes a point where the cartridge were using is simply out of gas.
And a higher BC number on the box wont help that, at least in the amount many think it will…
Otherwise there would be no need for cartridges like the 7mm ultra mags.
A 7mm Rem mag with higher BC bullets would be all thats necessary.
That entirely depends on how you define “out of gas,” “need,” and “necessary.” Higher BC absolutely will help a bullet arrive at a given distance with higher impact velocity and kinetic energy, and less wind drift and drop. Large BC differences lead to substantial gains. Indeed, a 7RM shooting high-BC bullets is superior to the 7RUM shooting low-BC bullets much faster, depending on the criteria. Beyond a certain distance, the 7RM bullet will have higher impact velocity, more impact energy, less wind drift, and its trajectory will flatten out more, as well.
