LNGRNG90
Active Member
I shot my first ladder test yesterday at 300 yards, and I am curious if I am reading my results right. I also got some really unexpected velocities. The test was shot from my Savage 11-VT .243 with a Sightron S-lll 6-24x50. The components I was using were Hornady 105 A-Max bullets seated at 2.800" OAL, RL-22, Hornady brass, and CCI 250 primers.
Starting charge : 41.0 gr
Max charge: 46.1 (45.3 was about the only posted max charge I could find, so I just started low and worked my way up.)
There were 18 different loads and each one was 0.3 gr apart. I didn't get all the way to MY max charge before I had pressure signs. I made it to load #16 and my primer was starting to crater. On loads 15 and 16 the sun started shining on my chronograph and my velocity jumped almost 100 fps (I'm assuming that is what caused it). My first load's velocity was 2,864 fps, and load #16 was 3,245 fps! I had a node at loads #4 (error), #5 (error), and #6 (2,968 fps) that had a vertical dispersion of 0.614", and the next node was loads #10 (3,116 fps), 11 (3,153 fps), and #12 (3,134 fps) that had a vertical dispersion of 0. 216". The temperature was 40 degrees out, and I do most of my shooting between 30 - 80 degrees. I would appreciate it if someone would share if the second node (10,11,12) would be ok come warmer weather from what they have experienced. I could not find much information on RL-22 and 105 A-Amax's.
Each line is 1" apart..
Has anyone else had much higher velocities than what book max states? I shot 2 other rifles through it with known velocities, and my chronograph was spot on with what they should have read, so I'm not worried about a off reading from that stand point. Thanks in advance for any input!
Starting charge : 41.0 gr
Max charge: 46.1 (45.3 was about the only posted max charge I could find, so I just started low and worked my way up.)
There were 18 different loads and each one was 0.3 gr apart. I didn't get all the way to MY max charge before I had pressure signs. I made it to load #16 and my primer was starting to crater. On loads 15 and 16 the sun started shining on my chronograph and my velocity jumped almost 100 fps (I'm assuming that is what caused it). My first load's velocity was 2,864 fps, and load #16 was 3,245 fps! I had a node at loads #4 (error), #5 (error), and #6 (2,968 fps) that had a vertical dispersion of 0.614", and the next node was loads #10 (3,116 fps), 11 (3,153 fps), and #12 (3,134 fps) that had a vertical dispersion of 0. 216". The temperature was 40 degrees out, and I do most of my shooting between 30 - 80 degrees. I would appreciate it if someone would share if the second node (10,11,12) would be ok come warmer weather from what they have experienced. I could not find much information on RL-22 and 105 A-Amax's.
Each line is 1" apart..
Has anyone else had much higher velocities than what book max states? I shot 2 other rifles through it with known velocities, and my chronograph was spot on with what they should have read, so I'm not worried about a off reading from that stand point. Thanks in advance for any input!
