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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
High velocity chamberings known for having exceptional accuracy.
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<blockquote data-quote="Trickymissfit" data-source="post: 920960" data-attributes="member: 25383"><p>Ackley never did much of anything with the 284 case, as it was rather uncommon in his era. He didn't think highly of the 6-284 due to it's excessive over bore condition, but did catalog it in his books. He modified the .243 Winchester case to help fight some of it's designed in issues. Wasn't a complete fix, but did help somewhat. He preferred the 6mm Ackley, but interestingly he also liked the 6x55AI quite a lot. He did a 6.5x55 improved round, but often said it was no better than the 6.5x55 Arch. The 6x55 Arch is very similar to the 6mm Vias, and probably the fastest 6mm out there ( almost 4200 fps with a 70 grain bullet), and still group very well. Yet most end users of the Vias went with the 100+ grain bullets. I like the 6BG personally. It's really nothing but a 6BR that head spaces off a .300 Savage gauge. Similar in velocity to the .243, but uses a lot less powder with a much better neck and shoulder design. There are two versions. One is reamed with the Savage taper, and the other uses the .243 taper. Think the latter one is what Bob finally settled on.</p><p> </p><p>The 6.5-284 is popular with long distance shooters these days, but there are a few shooters starting to do some serious experimenting with the 6.5x57AI built off the .257 case. It'll push a 140 grain bullet close to what most get out of the .284 case (3000fps area), but they claim it groups better. There's also a newer design built off the 30-06 case that is 60mm long instead of 64mm long. That one looks very interesting. (also done in 6mm). Myself, I like the 6.5WSM. </p><p>gary</p></blockquote><p></p>
[QUOTE="Trickymissfit, post: 920960, member: 25383"] Ackley never did much of anything with the 284 case, as it was rather uncommon in his era. He didn't think highly of the 6-284 due to it's excessive over bore condition, but did catalog it in his books. He modified the .243 Winchester case to help fight some of it's designed in issues. Wasn't a complete fix, but did help somewhat. He preferred the 6mm Ackley, but interestingly he also liked the 6x55AI quite a lot. He did a 6.5x55 improved round, but often said it was no better than the 6.5x55 Arch. The 6x55 Arch is very similar to the 6mm Vias, and probably the fastest 6mm out there ( almost 4200 fps with a 70 grain bullet), and still group very well. Yet most end users of the Vias went with the 100+ grain bullets. I like the 6BG personally. It's really nothing but a 6BR that head spaces off a .300 Savage gauge. Similar in velocity to the .243, but uses a lot less powder with a much better neck and shoulder design. There are two versions. One is reamed with the Savage taper, and the other uses the .243 taper. Think the latter one is what Bob finally settled on. The 6.5-284 is popular with long distance shooters these days, but there are a few shooters starting to do some serious experimenting with the 6.5x57AI built off the .257 case. It'll push a 140 grain bullet close to what most get out of the .284 case (3000fps area), but they claim it groups better. There's also a newer design built off the 30-06 case that is 60mm long instead of 64mm long. That one looks very interesting. (also done in 6mm). Myself, I like the 6.5WSM. gary [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
High velocity chamberings known for having exceptional accuracy.
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