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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.338 differences
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<blockquote data-quote="Long Time Long Ranger" data-source="post: 483324" data-attributes="member: 505"><p>MontanaRifleman, I doubt there is a standard Lapua improved other than the standard Ackley shoulder and taper for all cartridges. In my opinion that is not the best Lapua improved. When I get all unpacked I can pull out the notes for you from back in the 90's of the ones we all found to be the best. I remember the best one I settled on pushed the shoulder forward and changed the angle to I think 35 degrees with minimum body taper. I don't remember the exact specifics that far back but can find all the specs in my notes which are packed away. </p><p> </p><p>Guys, from all the tests on my 1000 yard range which included numerous rifles in 338 RUM, 338-300 RUM and 338 Laupua, there is just not enough seperation between these three to make a call either is faster. Accuracy loads in all three with 300 grain bullets hit between 2750-2850 fps in probably 90% of all rifles. Either could outshoot the other just depends on the barrel. If you flat out push them the Lapua can be pushed slightly faster. You have to go to the Lapua Improved to begin to get any real seperation from these three. That will give you 100+ fps. I have shot dozens of all these rifles for thousands of rounds. That is what I found.</p></blockquote><p></p>
[QUOTE="Long Time Long Ranger, post: 483324, member: 505"] MontanaRifleman, I doubt there is a standard Lapua improved other than the standard Ackley shoulder and taper for all cartridges. In my opinion that is not the best Lapua improved. When I get all unpacked I can pull out the notes for you from back in the 90's of the ones we all found to be the best. I remember the best one I settled on pushed the shoulder forward and changed the angle to I think 35 degrees with minimum body taper. I don't remember the exact specifics that far back but can find all the specs in my notes which are packed away. Guys, from all the tests on my 1000 yard range which included numerous rifles in 338 RUM, 338-300 RUM and 338 Laupua, there is just not enough seperation between these three to make a call either is faster. Accuracy loads in all three with 300 grain bullets hit between 2750-2850 fps in probably 90% of all rifles. Either could outshoot the other just depends on the barrel. If you flat out push them the Lapua can be pushed slightly faster. You have to go to the Lapua Improved to begin to get any real seperation from these three. That will give you 100+ fps. I have shot dozens of all these rifles for thousands of rounds. That is what I found. [/QUOTE]
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Rifles, Bullets, Barrels & Ballistics
.338 differences
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