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The Range
Ammo & Reloading
What am I doing wrong?
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<blockquote data-quote="Driller" data-source="post: 2567362" data-attributes="member: 25897"><p>I've got several carbines and one AR that I wanted to be a tack driver. It has shown a strong tendency to prefer one particular bullet and powder combination over others (77gr. SMK with 24 grains Varget, match prepped brass).</p><p></p><p>As others have said, a chronograph will help sort it out as far as eliminating varying velocities in your load.</p><p></p><p>Can you accurately subtend your targets at 200 yards and beyond? If you are shooting at 1" round dots or squares, can you divide the target into four equal quarters with the crosshairs of your reticle and thereby get a precise point of aim for each shot? (Aim Small, Miss Small)</p><p></p><p>Most of it is just me, but I have significantly different results depending on how I am shooting the rifle. Using a bipod off of a hard bench doesn't work for me too well. Prone, with softer ground, and a bipod works better. Prone off of a bag, and using a rear bag, works extremely well for small groups.</p><p></p><p>Are you using a stock trigger? I switched my 308 to a Geissele and my grouping problems disappeared, all other factors being equal.</p><p></p><p>Just some ideas.</p></blockquote><p></p>
[QUOTE="Driller, post: 2567362, member: 25897"] I've got several carbines and one AR that I wanted to be a tack driver. It has shown a strong tendency to prefer one particular bullet and powder combination over others (77gr. SMK with 24 grains Varget, match prepped brass). As others have said, a chronograph will help sort it out as far as eliminating varying velocities in your load. Can you accurately subtend your targets at 200 yards and beyond? If you are shooting at 1" round dots or squares, can you divide the target into four equal quarters with the crosshairs of your reticle and thereby get a precise point of aim for each shot? (Aim Small, Miss Small) Most of it is just me, but I have significantly different results depending on how I am shooting the rifle. Using a bipod off of a hard bench doesn't work for me too well. Prone, with softer ground, and a bipod works better. Prone off of a bag, and using a rear bag, works extremely well for small groups. Are you using a stock trigger? I switched my 308 to a Geissele and my grouping problems disappeared, all other factors being equal. Just some ideas. [/QUOTE]
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