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Hunting
The Basics, Starting Out
What does this grouping mean?
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<blockquote data-quote="fiftybmg" data-source="post: 1820186" data-attributes="member: 96316"><p>I can see three things to consider.</p><p></p><p>First, the group patterns appear to me roughly repetitive. A similar group pattern will appear on multiple targets.</p><p></p><p>This suggests you are changing the pressure points on the rifle cyclically, trying one grip for one string, another grip for the next, etc, till you come back to the first again. if the stock is flimsy, the grip change becomes significant.</p><p></p><p>Getting a cheek rest will help you settle on one way to hold the rifle, ideally without introducing any flex in the stock.</p><p></p><p>Second, these patterns are obviously affected by the various loads under development, some loads will have a much lower velocity spread than others and group better. I don't see velocity numbers in the thread or on the pictures, but from your powder data, your best groups are up to 58 grains, which suggests that those have the lowest shot-to-shot speed variation. The higher the powder charge, the bigger the group appears to be. Focus on refining those lower charges. A quick way to improve ES is a better [ benchrest ] primer.</p><p></p><p>Thirdly, if you have a can on the end. It is a variable that can cause load development headaches when groups are involved, either by working loose or getting clogged up. Take it off untill after the load development is complete, then adjust the scope for the POI shift it causes.</p><p></p><p>The T3X is a factory sleeper, it is accurate out of the box. If you feel you have to to prove this, buy a box of factory match ammo.</p></blockquote><p></p>
[QUOTE="fiftybmg, post: 1820186, member: 96316"] I can see three things to consider. First, the group patterns appear to me roughly repetitive. A similar group pattern will appear on multiple targets. This suggests you are changing the pressure points on the rifle cyclically, trying one grip for one string, another grip for the next, etc, till you come back to the first again. if the stock is flimsy, the grip change becomes significant. Getting a cheek rest will help you settle on one way to hold the rifle, ideally without introducing any flex in the stock. Second, these patterns are obviously affected by the various loads under development, some loads will have a much lower velocity spread than others and group better. I don't see velocity numbers in the thread or on the pictures, but from your powder data, your best groups are up to 58 grains, which suggests that those have the lowest shot-to-shot speed variation. The higher the powder charge, the bigger the group appears to be. Focus on refining those lower charges. A quick way to improve ES is a better [ benchrest ] primer. Thirdly, if you have a can on the end. It is a variable that can cause load development headaches when groups are involved, either by working loose or getting clogged up. Take it off untill after the load development is complete, then adjust the scope for the POI shift it causes. The T3X is a factory sleeper, it is accurate out of the box. If you feel you have to to prove this, buy a box of factory match ammo. [/QUOTE]
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The Basics, Starting Out
What does this grouping mean?
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