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<blockquote data-quote="chris matthews" data-source="post: 8628" data-attributes="member: 66"><p>GonHuntin,</p><p> No I don't think the longer barrel stabilizes the bullet more. The twist rate determines stabilization, not barrel length. A 1 in 10 twist is still 1 in 10 in a 10 in where the bullet make 1 turn before exiting or a 20 inch where the bullet makes 2 turns before exiting. Do the math, it all comes out the same. </p><p> If a bullet started crooked but would straighten out more in a longer barrel then we all use 40" barrels like DC <img src="http://images/icons/grin.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /> , however due to the drag DC mentioned and the fact a short barrel is stiffer (less whip) long barrels are not practical with some calibers.</p><p> The only reason for 30" barrels on guns like Palma rifles is for a longer sight radius using iron(aperture) sights. Since most of us use optics now that long sight radius is not needed.</p><p> There's just no reason to believe a longer barrel stabilizes a bullet better.</p><p> As a general rule of thumb, I would use the shortest barrel I could to obtain the desired velocities in the caliber of choice.</p><p></p><p>Rost,</p><p> I mentioned the answer to your question in my first post as to why you are seeing your groups tighten up at longer ranges. I truly believe it has to do more with sight resolution than anything else. Try experimenting with different shapes and sizes of targets, even at 100 yards. It will make a difference in groups. That why the 100 yard, 200, and 1000 yard benchrest targets are not the same. Look at a couple of good target companies, Sinclair carries one brand in particular that I am thinking of but can't remember the name, they have different targets for the same distance but different magnification levels of scopes.</p><p> Play around with it, you might be suprised by the differences.</p></blockquote><p></p>
[QUOTE="chris matthews, post: 8628, member: 66"] GonHuntin, No I don't think the longer barrel stabilizes the bullet more. The twist rate determines stabilization, not barrel length. A 1 in 10 twist is still 1 in 10 in a 10 in where the bullet make 1 turn before exiting or a 20 inch where the bullet makes 2 turns before exiting. Do the math, it all comes out the same. If a bullet started crooked but would straighten out more in a longer barrel then we all use 40" barrels like DC [img]images/icons/grin.gif[/img] , however due to the drag DC mentioned and the fact a short barrel is stiffer (less whip) long barrels are not practical with some calibers. The only reason for 30" barrels on guns like Palma rifles is for a longer sight radius using iron(aperture) sights. Since most of us use optics now that long sight radius is not needed. There's just no reason to believe a longer barrel stabilizes a bullet better. As a general rule of thumb, I would use the shortest barrel I could to obtain the desired velocities in the caliber of choice. Rost, I mentioned the answer to your question in my first post as to why you are seeing your groups tighten up at longer ranges. I truly believe it has to do more with sight resolution than anything else. Try experimenting with different shapes and sizes of targets, even at 100 yards. It will make a difference in groups. That why the 100 yard, 200, and 1000 yard benchrest targets are not the same. Look at a couple of good target companies, Sinclair carries one brand in particular that I am thinking of but can't remember the name, they have different targets for the same distance but different magnification levels of scopes. Play around with it, you might be suprised by the differences. [/QUOTE]
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