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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Extra velocity with 30" barrel
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<blockquote data-quote="Fiftydriver" data-source="post: 188953" data-attributes="member: 10"><p>Varmint,</p><p> </p><p>I would say you have an exceptionally fast barrel if your getting that velocity with no pressure signs. How many firings are you getting per case before the primer pockets loosen up.</p><p> </p><p>When I say the Edge and Lapua will generally get 2800 to 2850 with their best top end loads, I am talking about consistancy and accuracy. For some reason they really shoot in this velocity and pressure range. Extreme spreads are often in the low teens to even single digits at this level.</p><p> </p><p>Some rifles will certainly get more velocity, some less, I was only offering an average of what I have seen with the rifles I have built in Lilja barrels. That may be something to consider. Lilja barrels are not know for high velocity, they are known for accuracy. The reason is because their bores are designed around true BR specs and the 338 cal 1-10 barrels generally run quite tight in groove diameter.</p><p> </p><p>In comparision, Pac Nor barrels are generally much different, they tend to run faster, have slightly larger bores which will allow for the potential of more velocity.</p><p> </p><p>Pac Nors are good barrels, I would not class them with the top rung of barrel makers such as those from Lilja, Krieger, Rock, Broughton or Hart. There are others but these are the most popular.</p><p> </p><p>Again, with the velocity your getting, you either have an exceptional fast barrel or your running more pressures then you think you are. Just because you have no pressure signs does not mean your not running at higher pressures. If your getting 4-5 firings per case, your fine, if your getting less then that, the pressures are to high in my opinion but thats all it is, my opinion.</p><p> </p><p>I put a 338 Edge together this spring with a 32" barrel and it was slightly exceeding the velocity your getting and it was a Lilja barrel so there are exception. I also used Retumbo in that rifle.</p><p> </p><p>Kirby Allen(50)</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 188953, member: 10"] Varmint, I would say you have an exceptionally fast barrel if your getting that velocity with no pressure signs. How many firings are you getting per case before the primer pockets loosen up. When I say the Edge and Lapua will generally get 2800 to 2850 with their best top end loads, I am talking about consistancy and accuracy. For some reason they really shoot in this velocity and pressure range. Extreme spreads are often in the low teens to even single digits at this level. Some rifles will certainly get more velocity, some less, I was only offering an average of what I have seen with the rifles I have built in Lilja barrels. That may be something to consider. Lilja barrels are not know for high velocity, they are known for accuracy. The reason is because their bores are designed around true BR specs and the 338 cal 1-10 barrels generally run quite tight in groove diameter. In comparision, Pac Nor barrels are generally much different, they tend to run faster, have slightly larger bores which will allow for the potential of more velocity. Pac Nors are good barrels, I would not class them with the top rung of barrel makers such as those from Lilja, Krieger, Rock, Broughton or Hart. There are others but these are the most popular. Again, with the velocity your getting, you either have an exceptional fast barrel or your running more pressures then you think you are. Just because you have no pressure signs does not mean your not running at higher pressures. If your getting 4-5 firings per case, your fine, if your getting less then that, the pressures are to high in my opinion but thats all it is, my opinion. I put a 338 Edge together this spring with a 32" barrel and it was slightly exceeding the velocity your getting and it was a Lilja barrel so there are exception. I also used Retumbo in that rifle. Kirby Allen(50) [/QUOTE]
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Extra velocity with 30" barrel
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