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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.257, 6.5mm and 270 Allen Mags, New Family or Rounds...
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<blockquote data-quote="budlight" data-source="post: 36734" data-attributes="member: 2939"><p>Your listed speeds are very impressive for the .277 which I have fine tuned over the years. Your getting a good 150+ fps over what my 270 Ackley Improved can do with my 29 inch mag target barrel.</p><p></p><p>I've considered a larger case capacity. I use IMR 7828 (65.8 and 64.6 gr) with CCI250 primers in the 140 & 150 gr. This is max load with primer pressure signs @ 70 or so degrees. The most acurrate loads are actually down about 2 grains and about 50 fps less on a 15 foot distance chronograph. So it's right at 3300 for the 150's</p><p></p><p>H1000 really would require more case capacity than a 270 AI. Because the 7828 has to use a tall drop tube and the winchester brass is full to the top and both of these are highly compressed loads.</p><p></p><p></p><p>Once you get these wildcat bullets developed I would like info on them. <img src="http://images/icons/grin.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>[ 11-01-2004: Message edited by: budlight ]</p></blockquote><p></p>
[QUOTE="budlight, post: 36734, member: 2939"] Your listed speeds are very impressive for the .277 which I have fine tuned over the years. Your getting a good 150+ fps over what my 270 Ackley Improved can do with my 29 inch mag target barrel. I've considered a larger case capacity. I use IMR 7828 (65.8 and 64.6 gr) with CCI250 primers in the 140 & 150 gr. This is max load with primer pressure signs @ 70 or so degrees. The most acurrate loads are actually down about 2 grains and about 50 fps less on a 15 foot distance chronograph. So it's right at 3300 for the 150's H1000 really would require more case capacity than a 270 AI. Because the 7828 has to use a tall drop tube and the winchester brass is full to the top and both of these are highly compressed loads. Once you get these wildcat bullets developed I would like info on them. [img]images/icons/grin.gif[/img] [ 11-01-2004: Message edited by: budlight ] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.257, 6.5mm and 270 Allen Mags, New Family or Rounds...
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