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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
338 Mega
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<blockquote data-quote="PapaSmurff" data-source="post: 2841427" data-attributes="member: 118512"><p>Ok, I have some more updated results: I was having a difficult time getting the accuracy that I wanted on a consistent basis, within normal operating presssures, with the 270 ELD-X or the 250 Bergers. Some groups were turning out fantastic and some were turning out not so fantastic. Also when I went to resize my brass I noticed that it was very difficult to resize (a clear sign that I was running my loads at very high pressures..). Therefore I backed off my powder charges and started finding consistent accuracy with about every bullet I have been working with. That being said, the 270's are just too heavy of a bullet for this cartridge unless you use the long throated reamer that Rich offers. I chose to use the medium length reamer and then uni-throat another .130" which I thought would be plenty, and it is except I had forgotten how much Hornady's always seem to like A LOT of jump. Most of my accuracy loads with Hornady ELD's in most calibers I have loaded for, seem to wanna jump around .100". If I seat the 270 ELD's that far down in the case I will only have enough powder capacity and the pressures will be too high for me to get much more than the 2,600-2,650 FPS velocity range with them. However my throat length is plenty long enough to push the 250 Bergers anywhere from 2,700-2,800 fps with acceptable pressures. So now on to my progress in the next post.</p></blockquote><p></p>
[QUOTE="PapaSmurff, post: 2841427, member: 118512"] Ok, I have some more updated results: I was having a difficult time getting the accuracy that I wanted on a consistent basis, within normal operating presssures, with the 270 ELD-X or the 250 Bergers. Some groups were turning out fantastic and some were turning out not so fantastic. Also when I went to resize my brass I noticed that it was very difficult to resize (a clear sign that I was running my loads at very high pressures..). Therefore I backed off my powder charges and started finding consistent accuracy with about every bullet I have been working with. That being said, the 270’s are just too heavy of a bullet for this cartridge unless you use the long throated reamer that Rich offers. I chose to use the medium length reamer and then uni-throat another .130” which I thought would be plenty, and it is except I had forgotten how much Hornady’s always seem to like A LOT of jump. Most of my accuracy loads with Hornady ELD’s in most calibers I have loaded for, seem to wanna jump around .100”. If I seat the 270 ELD’s that far down in the case I will only have enough powder capacity and the pressures will be too high for me to get much more than the 2,600-2,650 FPS velocity range with them. However my throat length is plenty long enough to push the 250 Bergers anywhere from 2,700-2,800 fps with acceptable pressures. So now on to my progress in the next post. [/QUOTE]
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