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Rifles, Reloading, Optics, Equipment
Reloading
Using chronograph data to determine the best load????
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<blockquote data-quote="bailey1474" data-source="post: 92757" data-attributes="member: 3249"><p>I once loaded 13 different shells for my 300 RUM each increasing by .5 gr. I was going to do a ladder w/the 240 SMKs but it was too windy that day so I just set up the chrono and fired all 13 @ 100 yds. From 83 gr to 87 gr, I only noticed about a 50 fps increase in velocity. 87.5 gr brought a 20 fps jump as did 88 gr. The jumps continued w/increasing charges. What really impressed me was that all 13 rounds went into one hole that measured .850". The group was also much smaller before I noticed the jump in velocity. As the charge increased, my group opened up a bit to the right. Not sure why, but that is what it did. </p><p></p><p>I am going to try the same thing w/my 6BR when I get it back. We'll see if this was just fluke or if it actually works!!!</p></blockquote><p></p>
[QUOTE="bailey1474, post: 92757, member: 3249"] I once loaded 13 different shells for my 300 RUM each increasing by .5 gr. I was going to do a ladder w/the 240 SMKs but it was too windy that day so I just set up the chrono and fired all 13 @ 100 yds. From 83 gr to 87 gr, I only noticed about a 50 fps increase in velocity. 87.5 gr brought a 20 fps jump as did 88 gr. The jumps continued w/increasing charges. What really impressed me was that all 13 rounds went into one hole that measured .850". The group was also much smaller before I noticed the jump in velocity. As the charge increased, my group opened up a bit to the right. Not sure why, but that is what it did. I am going to try the same thing w/my 6BR when I get it back. We'll see if this was just fluke or if it actually works!!! [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Using chronograph data to determine the best load????
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