Winchester loads a 180-gr. AccuBond in their .30 caliber Supreme line-up, which is what I shoot in my 30-06 at 2,750 fps.
This bullet has more energy at 300 yards than a 300 Win Mag with 180-gr. Power Points.
When comparing a bullet's energy in a 30-06 versus a 300 Win Mag, if you put a premium 180-gr. Nosler AccuBond bullet in a 30-06 at 2,750 fps MV and compare it to a plain jane Winchester 180-gr. Power Point in a 300 Win Mag at 2,960 fps MV, the 30-06 AccuBond will have an amazing 104 ft. lbs more energy at 300 yards: that's right - 2,005 versus 1,901 (Source: Winchester's 2005 Ammo Catalog, p. 10 - 13).
So you see the 180-gr. AccuBond with a BC of .509 easily makes up for and passes the 210 fps velocity advantage the 180-gr. Power Point had because of its much lower BC of only .349.
In this case, the 30-06 180-gr. AccuBond outperforms a 300 Win Mag 180-gr. Power Point at 300 yards.
There can be too much of a good thing with antler rattling.
I like to hit the horns together for a good 30- to 40-second rattling sequence and then hang them up and resist the urge to hit them again.
This works to the hunter's advantage, because if a buck has heard it, he may have been 300 or 400 yards away and he comes in and he's not exactly sure where it came from.
When finally is time to rattle again throw a slight change-up into the routine.
The second time, don't rattle as loud...