With all the recent discussion of fillers being used under conicals I decided to experiment a little today myself. The rifle used was a White Ultra Mag .504 caliber. I was shooting a 500 grain Bullshop NEI pure lead conical andsome Bullshop 460 grain conicals. For most of the testing I used 70 grains of Triple Se7en 3f and had some fun with Goex 3f. All shooting was done at the 50 yard line. The rifle was scoped with a Nikon Pro Staff.
#1 The upper row center picture was the start of the shoot. The load was a 500 NEI with T-7. The red arrow shows where the first hit on a clean un-fowled barrel hit. After that the other four grouped pretty tight actually. I was dumping the powder, then tapping the butt of the rifle and then adding 10 grains of cornmeal. I tapped the butt again and then loaded the conical. I did not swab the barrel during the shooting.
#2 I then moved to the upper right bull. Knowing the prior load was accurate, this time I loaded the same powder charge, then a 1/16th wad, then 10 grains of cornmeal and then an additional wad after which seating the conical. I was shocked at how terrible the rifle shot this way. As you can see from the position of the red arrows. I stopped all testing in this manner after three shots.
#3 I then shot some of the Bullshop 460 grain conicals at the same bull with no filler or wads. I thought they did pretty good actually. I marked the one hit from the prior mess.
#4 I then moved to the lower right corner. This time with the 500 grain NEI I loaded the powder and then no filler or wad. Simply shot off the powder itself. This was a five shot group and it did all right.
#5 I then moved to the lower left corner bull. Again the same everything but load two wads. Again, a more then respectable group. Still not as tight as the simple powder and filler produced not counting the first shot, but good enough.
#6 Just shows the overall target. Actually I want to do some more testing with the cornmeal filler and no wads and see just what can be accomplished with the conicals.
Some things I did notice was with the powder then the cornmeal filler, the conical still loaded as easy as always. I was shooting CCI standard caps as the ignition system.