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Hunting
Extreme Long Range Hunting & Shooting (ELR)
338 Lapua AI or Something off the Rum case
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<blockquote data-quote="CA48" data-source="post: 1241354" data-attributes="member: 21446"><p>With the brass, Betram will be cheaper in the long run because you will get way more firings out of the Bertram brass, same situation with the Lapua brass, higher quality components will give you more consistency and save you money in the long run.</p><p></p><p>I don't have my notes handy but it took me 112-113 grs of RL 33 to produce 3050fps. That's with a .040 jump and a COAL of 4.120", Bertram brass. My improved design has a slight amount of body taper taken out and a 40 degree shoulder probably around 3.5 grains over the standard edge case capicity.</p><p></p><p></p><p></p><p>I have a heavy sendaro contour. It finishes at .890 vs .830, 30in bbl, and I have seen no ill effects at long range. It will shoot around half inch at 100 yards and hold half inch 3 shot groups out to 300 yards. I think with some load tweaking I could better my groups at short range but there is no point since its shoots so well at long range and shorter distances are irrelevant with this cartridge. I have never had a problem finding REM RUM brass, but if you do the Texan you can use 300 rum brass just as easily, it just adds one more step of necking up to .358. Then you can partially neck it down to create the false shoulder for fire forming.</p></blockquote><p></p>
[QUOTE="CA48, post: 1241354, member: 21446"] With the brass, Betram will be cheaper in the long run because you will get way more firings out of the Bertram brass, same situation with the Lapua brass, higher quality components will give you more consistency and save you money in the long run. I don't have my notes handy but it took me 112-113 grs of RL 33 to produce 3050fps. That's with a .040 jump and a COAL of 4.120", Bertram brass. My improved design has a slight amount of body taper taken out and a 40 degree shoulder probably around 3.5 grains over the standard edge case capicity. I have a heavy sendaro contour. It finishes at .890 vs .830, 30in bbl, and I have seen no ill effects at long range. It will shoot around half inch at 100 yards and hold half inch 3 shot groups out to 300 yards. I think with some load tweaking I could better my groups at short range but there is no point since its shoots so well at long range and shorter distances are irrelevant with this cartridge. I have never had a problem finding REM RUM brass, but if you do the Texan you can use 300 rum brass just as easily, it just adds one more step of necking up to .358. Then you can partially neck it down to create the false shoulder for fire forming. [/QUOTE]
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Extreme Long Range Hunting & Shooting (ELR)
338 Lapua AI or Something off the Rum case
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