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bullet stabilization and barrel length
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<blockquote data-quote="Red hunter" data-source="post: 748107" data-attributes="member: 40502"><p>You definately jumbled a lot of of things together. Barrel twist rates in factory barrels are set to stabilize the most common bullets used in a set caliber. A 1 in 10 will work just fine for the 180 or 200 grain bullets in 300wm. Some long range shooters are using heavier bullets that are longer by design for better down range ballistics. They are changing to barrels with a different twist rate to stabilize these bullets. When a bullet exits the barrel it will be spinning at a set rate of rpm according to the twist rate no matter the lenght of the barrel. Using a longer barrel will allow the loader to use powders with different burn rates to gain velocities. Acurracy is another can of worms. Will barrel lenght affect accuracy? I guess it depends on how far you are shooting. Will a 20 inch barrel shoot sub moa at 500 yards? Yes. Will it do the same at 1200? probably not. But I think it has alot more to do with velocity achieved out of the longer barrel.</p><p>I think a 300wm with a 24 inch barrel with a 200 grain bullet will do ok out to 1000 yards. Will it set records for group size ? prob not. Can you put a bullet in a big game animal? yep.</p><p> </p><p>I may be way off base. If I am, Someone with more knowledge on this please help.</p></blockquote><p></p>
[QUOTE="Red hunter, post: 748107, member: 40502"] You definately jumbled a lot of of things together. Barrel twist rates in factory barrels are set to stabilize the most common bullets used in a set caliber. A 1 in 10 will work just fine for the 180 or 200 grain bullets in 300wm. Some long range shooters are using heavier bullets that are longer by design for better down range ballistics. They are changing to barrels with a different twist rate to stabilize these bullets. When a bullet exits the barrel it will be spinning at a set rate of rpm according to the twist rate no matter the lenght of the barrel. Using a longer barrel will allow the loader to use powders with different burn rates to gain velocities. Acurracy is another can of worms. Will barrel lenght affect accuracy? I guess it depends on how far you are shooting. Will a 20 inch barrel shoot sub moa at 500 yards? Yes. Will it do the same at 1200? probably not. But I think it has alot more to do with velocity achieved out of the longer barrel. I think a 300wm with a 24 inch barrel with a 200 grain bullet will do ok out to 1000 yards. Will it set records for group size ? prob not. Can you put a bullet in a big game animal? yep. I may be way off base. If I am, Someone with more knowledge on this please help. [/QUOTE]
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