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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: 482640" data-attributes="member: 505"><p>The two you mentioned, the 338 Lapua and 338 Edge, have virtually identical performance. If you wanted to flat out push both to the max the 338 Lapua can be pushed to slightly greater velocity probably because of the much higher pressures the Lapua brass will withstand. The 338 Lapua was developed by Lapua in the late 1980's (about 1989 I think). It became popular during the mid to late 90's in this country primarily as wildcatters like me started improving the case and seeing what we could get out of it. I was in continuous communication with guys around the country and at Sierra Bullets as we all compared notes on what the top improved versions were getting performance wise or basically which ones were the best. The base cartridge is a shortenned 416 Rigby case. The full length parent cartridge improved had been a top wildcat 338 along with the 338-378 wby for many years . I know I started fooling with these during the 1970's and they were already very popular at that time.</p><p> </p><p>The 338 Edge is the 338-300 RUM. It goes by many names however edge seems to work on this site best. The fine gunsmith and strong promoter of the long range hunting sport Shawn Carlock who is on this site started working with it in 2001 and named it edge out of his shop according to his article on it. Overall there are probably more barrels stamped 338-300 RUM than any of the other names. The cartridge began in late 1998 when the specs of the soon to be released 300 RUM were leaked to some and wildcatters went to work. The cartridge became popular with several gunsmiths during 1999 and 2000. It has continued to have a very good following because it can be done on a standard magnum action making it a cheap build with readily available cheap remington brass.</p><p> </p><p>By late 1998 I was doing the 300 RUM necked to 7mm, 8mm, 338 and 358. My primary interest was the 338 version since I had been looking for years for a case that would beat a 340 wby on a standard magnum action. So I immediately jumped all over necking the 300 RUM and many were very impressed by the results. During the 1999 elk season several rifles I had done took elk at long range and recieved glowing reports. To my knowledge an elk taken in October of that year in Colorado was the first to succumb to the 338-300 RUM. The only way anyone could have been doing the cartridge before late 1998 would have to be an insider at remington.</p><p> </p><p>Several shops including me quit doing the 338-300 RUM in 2001 with the introduction of the 338 RUM. Through extensive testing both cartridges deliver basically the same performance. The 338 RUM offered several advantages with cheap RCBS dies and over the counter brass. Being slighty shorter it was easier and cheaper to get it feeding better through standard magnum actions which was the beauty of the cartridge. Like Remington had told us at the 2001 shot show it delivered the same performance as necking the 300 RUM to 338 but fed better through the remington actions with long 338 bullets with less modifications. Some of us just saw no reason after 2001 to continue wildcatting the 338-300 RUM. Both are excellent cartridges with excellent accuracy and capable of killing animals well beyond the capabilities of all but the top marksmen on the planet.</p></blockquote><p></p>
[QUOTE="Long Time Long Ranger, post: 482640, member: 505"] The two you mentioned, the 338 Lapua and 338 Edge, have virtually identical performance. If you wanted to flat out push both to the max the 338 Lapua can be pushed to slightly greater velocity probably because of the much higher pressures the Lapua brass will withstand. The 338 Lapua was developed by Lapua in the late 1980's (about 1989 I think). It became popular during the mid to late 90's in this country primarily as wildcatters like me started improving the case and seeing what we could get out of it. I was in continuous communication with guys around the country and at Sierra Bullets as we all compared notes on what the top improved versions were getting performance wise or basically which ones were the best. The base cartridge is a shortenned 416 Rigby case. The full length parent cartridge improved had been a top wildcat 338 along with the 338-378 wby for many years . I know I started fooling with these during the 1970's and they were already very popular at that time. The 338 Edge is the 338-300 RUM. It goes by many names however edge seems to work on this site best. The fine gunsmith and strong promoter of the long range hunting sport Shawn Carlock who is on this site started working with it in 2001 and named it edge out of his shop according to his article on it. Overall there are probably more barrels stamped 338-300 RUM than any of the other names. The cartridge began in late 1998 when the specs of the soon to be released 300 RUM were leaked to some and wildcatters went to work. The cartridge became popular with several gunsmiths during 1999 and 2000. It has continued to have a very good following because it can be done on a standard magnum action making it a cheap build with readily available cheap remington brass. By late 1998 I was doing the 300 RUM necked to 7mm, 8mm, 338 and 358. My primary interest was the 338 version since I had been looking for years for a case that would beat a 340 wby on a standard magnum action. So I immediately jumped all over necking the 300 RUM and many were very impressed by the results. During the 1999 elk season several rifles I had done took elk at long range and recieved glowing reports. To my knowledge an elk taken in October of that year in Colorado was the first to succumb to the 338-300 RUM. The only way anyone could have been doing the cartridge before late 1998 would have to be an insider at remington. Several shops including me quit doing the 338-300 RUM in 2001 with the introduction of the 338 RUM. Through extensive testing both cartridges deliver basically the same performance. The 338 RUM offered several advantages with cheap RCBS dies and over the counter brass. Being slighty shorter it was easier and cheaper to get it feeding better through standard magnum actions which was the beauty of the cartridge. Like Remington had told us at the 2001 shot show it delivered the same performance as necking the 300 RUM to 338 but fed better through the remington actions with long 338 bullets with less modifications. Some of us just saw no reason after 2001 to continue wildcatting the 338-300 RUM. Both are excellent cartridges with excellent accuracy and capable of killing animals well beyond the capabilities of all but the top marksmen on the planet. [/QUOTE]
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