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Rifles, Reloading, Optics, Equipment
Reloading
264 142LR AccuBonds
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<blockquote data-quote="parshal" data-source="post: 1098391" data-attributes="member: 605"><p>I used 63 grains of 7828 with a 140 Partition in the original barrel of my .264. I was getting around 3300 measured by my old Chrony Beta. I don't trust those readings even though it was consistent. I was able to get to 65 grains where I saw pressure. This was back when IMR listed 65 grains as max. Now, Hodgdon lists 58 as max.</p><p></p><p>I spoke with the guys at Swift bullets and asked about R33 with their 130 Scirocco. They had not tested it but did when I asked. They found 70 grains to be maximum with a group size of .9" and 3124 fps. I don't know how many shots that was, though. 68.5 provided the most accuracy at .7" and 3072 fps. They test with a 24" barrel. They said of all the powders they've tested they would only recommend Retumbo or R33 for consistency. They said that's one of the most finicky cartridges they've tested.</p><p></p><p>I asked about R26 so they may test that, too. If so, I'll report back.</p></blockquote><p></p>
[QUOTE="parshal, post: 1098391, member: 605"] I used 63 grains of 7828 with a 140 Partition in the original barrel of my .264. I was getting around 3300 measured by my old Chrony Beta. I don't trust those readings even though it was consistent. I was able to get to 65 grains where I saw pressure. This was back when IMR listed 65 grains as max. Now, Hodgdon lists 58 as max. I spoke with the guys at Swift bullets and asked about R33 with their 130 Scirocco. They had not tested it but did when I asked. They found 70 grains to be maximum with a group size of .9" and 3124 fps. I don't know how many shots that was, though. 68.5 provided the most accuracy at .7" and 3072 fps. They test with a 24" barrel. They said of all the powders they've tested they would only recommend Retumbo or R33 for consistency. They said that's one of the most finicky cartridges they've tested. I asked about R26 so they may test that, too. If so, I'll report back. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
264 142LR AccuBonds
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