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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Always learning something new
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<blockquote data-quote="rjmarine" data-source="post: 1157865" data-attributes="member: 30201"><p>there will be an optimum length barrel for each caliber and bullet style and weight </p><p>and for a given powder . each 1 of these items can be changed and there is a good chance it will change how fast or slow the bullet leaves the barrel. then you can also had 2 lets just say off the shelf rem 700 in 30-06 . shoot them both on the say bench same day same everything and you can end up with 1 of them being faster then the other and even sometimes by 100 fps. </p><p>so we can not through a blanket statement over the rifles we shoot saying all of them will be the best using a 26" barrel. it can and is different for each load. so what we end up doing most of the time is using a barrel in a length that will be a happy medium for that caliber and what we plan to use it for </p><p></p><p>some guys are very much hung up on getting the max muzzle velocity out of the rifle so he will go with the longest barrel he can thinking that will give him what he is looking for. but as your gunsmith told you that longer barrel will not always give you the max fps.</p><p></p><p>i myself like to choose a barrel length that looks and feels good on the rifle and work around what the final velocity ends up being.</p><p></p><p>those wacky guys on mythbusters did a show on something kinda like this</p><p>they were trying to get a ping bong ball to go through a sheet of plywood.</p><p>so they did a bunch or test to find there max fps. they tried many barrel lengths from short to very very long. they were using compressed air. forgot at what psi they settled on but they did find that the longest barrel did not give max fps</p><p>oh yes they also added in there a vacuum on there barrel which was a huge jump in fps</p></blockquote><p></p>
[QUOTE="rjmarine, post: 1157865, member: 30201"] there will be an optimum length barrel for each caliber and bullet style and weight and for a given powder . each 1 of these items can be changed and there is a good chance it will change how fast or slow the bullet leaves the barrel. then you can also had 2 lets just say off the shelf rem 700 in 30-06 . shoot them both on the say bench same day same everything and you can end up with 1 of them being faster then the other and even sometimes by 100 fps. so we can not through a blanket statement over the rifles we shoot saying all of them will be the best using a 26" barrel. it can and is different for each load. so what we end up doing most of the time is using a barrel in a length that will be a happy medium for that caliber and what we plan to use it for some guys are very much hung up on getting the max muzzle velocity out of the rifle so he will go with the longest barrel he can thinking that will give him what he is looking for. but as your gunsmith told you that longer barrel will not always give you the max fps. i myself like to choose a barrel length that looks and feels good on the rifle and work around what the final velocity ends up being. those wacky guys on mythbusters did a show on something kinda like this they were trying to get a ping bong ball to go through a sheet of plywood. so they did a bunch or test to find there max fps. they tried many barrel lengths from short to very very long. they were using compressed air. forgot at what psi they settled on but they did find that the longest barrel did not give max fps oh yes they also added in there a vacuum on there barrel which was a huge jump in fps [/QUOTE]
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