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Extreme Long Range Hunting & Shooting (ELR)
Success At +1000 yards!
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<blockquote data-quote="Fiftydriver" data-source="post: 6650" data-attributes="member: 10"><p>Texas,</p><p></p><p>When I looked at designing a 338 wildcat, I had several cases in mind to play with including the Lapua, Rigby, Lazz, RUM and the big weatherby case.</p><p></p><p>When it came right down to it, I want to design a round that the average money maker can afford to build a rifle for and shoot but still with plenty of performance for 1500 yard shooting.</p><p></p><p>The Lapua and its improved brother are greatlong range hammers but require fat actions and brass costs nearly $2 per.</p><p></p><p>The Rigby is in the same size class only longer and about as expensive. Some brass I have loaded for customers was not what I would call match quality by any means either.</p><p></p><p>Lazzeroni brass is big, expensive and from what I have seen with a few different rounds I have tested, not very good quality.</p><p></p><p>The WBY case is big, expensive and pretty soft, limiting the number of firings on a case.</p><p></p><p>This left me with the RUM case. The 300 RUM itself has a case capacity that is one grain larger then the standard 338 Lapua, at least the brass I measured. I'm sure some is larger, some is smaller but basically the same.</p><p></p><p>My round will be designed strickly for use in extreme range situations out of single shot rifles.</p><p></p><p>I am using, actually the 375 RUM case. The necks will be turned and then sized to .338". THe shoulder will be moved forward so that it is the same length as the 7mm RUM, roughly .250" long. I know those traditionalists will not like this but in a single shot rifle it will be plenty. After moving the shoulder forward, it will be sharpened up to either 40 or 45 degrees, have not fully decided yet and the body will have .015" taken out of the taper.</p><p></p><p>Basically it will be an improved 338-300 RUM with the shoulder moved forward just shy of .010".</p><p></p><p>Case capacity should be close to the improved Lapua with brass that is 1/4 the price.</p><p></p><p>Also this round will fit in conventional actions like the Rem M700, Win M70 or even the Sav if someone would want to.</p><p></p><p>My first one will be built on a blue-printed Rem 700 with a holland .250" thick recoil lug and a 36" Lilja straight cylinder barrel.</p><p></p><p>I will use a barrel mounting V-block and free float the remaining barrel and action to the stock.</p><p></p><p>I am hoping to get performance in teh 3050-3100 fps range out of this set up with the 300 gr MK.</p><p></p><p>THe optics will be a Nightforce 8-32 NXS and a Jewel trigger will also be added. The stock is still undecided but I have it narrowed down to three makers, all in the heavy tactical style.</p><p></p><p>I will either use a Holland "Quick Discharge" break or one of my own designs of similiar style.</p><p></p><p>Good Shooting!!!</p><p></p><p>50</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 6650, member: 10"] Texas, When I looked at designing a 338 wildcat, I had several cases in mind to play with including the Lapua, Rigby, Lazz, RUM and the big weatherby case. When it came right down to it, I want to design a round that the average money maker can afford to build a rifle for and shoot but still with plenty of performance for 1500 yard shooting. The Lapua and its improved brother are greatlong range hammers but require fat actions and brass costs nearly $2 per. The Rigby is in the same size class only longer and about as expensive. Some brass I have loaded for customers was not what I would call match quality by any means either. Lazzeroni brass is big, expensive and from what I have seen with a few different rounds I have tested, not very good quality. The WBY case is big, expensive and pretty soft, limiting the number of firings on a case. This left me with the RUM case. The 300 RUM itself has a case capacity that is one grain larger then the standard 338 Lapua, at least the brass I measured. I'm sure some is larger, some is smaller but basically the same. My round will be designed strickly for use in extreme range situations out of single shot rifles. I am using, actually the 375 RUM case. The necks will be turned and then sized to .338". THe shoulder will be moved forward so that it is the same length as the 7mm RUM, roughly .250" long. I know those traditionalists will not like this but in a single shot rifle it will be plenty. After moving the shoulder forward, it will be sharpened up to either 40 or 45 degrees, have not fully decided yet and the body will have .015" taken out of the taper. Basically it will be an improved 338-300 RUM with the shoulder moved forward just shy of .010". Case capacity should be close to the improved Lapua with brass that is 1/4 the price. Also this round will fit in conventional actions like the Rem M700, Win M70 or even the Sav if someone would want to. My first one will be built on a blue-printed Rem 700 with a holland .250" thick recoil lug and a 36" Lilja straight cylinder barrel. I will use a barrel mounting V-block and free float the remaining barrel and action to the stock. I am hoping to get performance in teh 3050-3100 fps range out of this set up with the 300 gr MK. THe optics will be a Nightforce 8-32 NXS and a Jewel trigger will also be added. The stock is still undecided but I have it narrowed down to three makers, all in the heavy tactical style. I will either use a Holland "Quick Discharge" break or one of my own designs of similiar style. Good Shooting!!! 50 [/QUOTE]
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