I got back out yesterday morning and was shooting by 8am (offician sunrise=7:49). It was about 0 degrees (no kidding!) and the wind was, again, 0-1 mph but this time it started from about 9:30 and swung around through my 12 O'clock and ended about my 2:30 by the time I quit at 11am; sunny too, which helped warm up a bit to the low teens. Honestly, I don't mind the cold temps. I can tolerate that. It's the cold wind I don't like.
Aiming squares have 1" Interior dimension. I aimed at the lower right corner of each.
First up was what I thought would be a promising load, three 3-shot groups with the Nosler 180 BT and 68.6 gr (1/2 way between #'s 16 -17 from the 1st ladder and #7 of the 2nd ladder) of Reloader 25. No good! See the pics.
Would it kill an elk at 300? Sure! But I think this new Lilja barrel can do better, the ladder makes me believe so. What was off was the velocity, or should I say faster than the ladder shots; 59 fps faster. Not sure I can 'splain that.
Next, the 69.5 grainers comprising two groups; a little better. Again, faster velocity than was noted in the ladder.
Next up was the Speer 180 Hot Core Spitzer. Load #3, 63.2 gr with 3-shots into 4-3/8", but at 30-06 velocities of 2707 average. Then load #11, 66.4 gr at 2860 fps into 5-1/8"; two practically touching. This one needs more exploration.
Then finally, I completed the Speer ladder. These would be shots #13 through #18, the shots where the camera quit on me and I could not tell the impact sequence. Here is that ladder.
Chg wt velocity
#1 67.2 2953
#2 67.5 2934
#3 67.8 2913
#4 68.1 2934
#5 68.4 2977
#6 68.7 2960
#7 69 2995
#8 69.3 3004
#9 69.6 3045
#10 69.9 3021
Numbers 1,2,3 and then 7,8,9,10 look interesting to me.
I would prefer the Nosler BT to work so I can use it for lots of inexpensive practice followed by the Nosler Accubond for hunting, both .507 BC. Then followed by the 180 Speer Spitzer (.483 BC) for practice and the Nosler 180 Partition (.474 BC) for hunting since thier BC's are similar.
My velocity goal, if achieveable is 2900+ fps but accuracy will win out in my book.