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Steyr Pro Hunter, Hawke Scope and the .260 Review
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<blockquote data-quote="gunsmith" data-source="post: 984348" data-attributes="member: 53434"><p>Chaos -</p><p>My records show a 6.5-55 AI that was in for restoration several years ago. The semi-heavy barrel had been 26", was re-chambered down to 24 3/4" and crowned 10 degrees (rounded dome). </p><p></p><p>The trigger was re-polished and adjusted to customer's preferred 3.25 lbs. pull. </p><p></p><p>Considerable stock restoration left it in questionable shape, a new stock was suggested, but not purchased. </p><p></p><p>Barrel and action were de-rusted, welded, filed, shot blasted, normalized, cryogenic treated, straightened, and Parkerized.</p><p></p><p>An accurizing effort lists 15-round groups average .72" at 300 meters with max group at 1.48". A 5-round group at 500 m was 2.54", a 5-round group at 800 m was 7.44", a 5-round group at 1,000 m was 12.14". Accurizing was done with new brass, slugs were 125 grain Sierra boat tail spitzer. I see several tests with conflicting data regarding powders and charges. Probably mis-recorded or should have been re-run. This was NOT one of Parker Ackley's jobs - its not his handwriting - probably either my grandfather's or one of his friends, possibly one of my uncle's. Nobody signed the notebook.</p><p></p><p>Note on the .260 Remington round - a friend made up a .260 and quite stoically reported it as one of the best 1000 m rounds available - that was before he tried the 6.5-.284 (now Norma) round, which he reports is THE best. Other friends are split regarding the 6BR and the 6.5-.284 Norma - groups keep going down as they put their money and efforts into these 2 excellent rounds.</p></blockquote><p></p>
[QUOTE="gunsmith, post: 984348, member: 53434"] Chaos - My records show a 6.5-55 AI that was in for restoration several years ago. The semi-heavy barrel had been 26", was re-chambered down to 24 3/4" and crowned 10 degrees (rounded dome). The trigger was re-polished and adjusted to customer's preferred 3.25 lbs. pull. Considerable stock restoration left it in questionable shape, a new stock was suggested, but not purchased. Barrel and action were de-rusted, welded, filed, shot blasted, normalized, cryogenic treated, straightened, and Parkerized. An accurizing effort lists 15-round groups average .72" at 300 meters with max group at 1.48". A 5-round group at 500 m was 2.54", a 5-round group at 800 m was 7.44", a 5-round group at 1,000 m was 12.14". Accurizing was done with new brass, slugs were 125 grain Sierra boat tail spitzer. I see several tests with conflicting data regarding powders and charges. Probably mis-recorded or should have been re-run. This was NOT one of Parker Ackley's jobs - its not his handwriting - probably either my grandfather's or one of his friends, possibly one of my uncle's. Nobody signed the notebook. Note on the .260 Remington round - a friend made up a .260 and quite stoically reported it as one of the best 1000 m rounds available - that was before he tried the 6.5-.284 (now Norma) round, which he reports is THE best. Other friends are split regarding the 6BR and the 6.5-.284 Norma - groups keep going down as they put their money and efforts into these 2 excellent rounds. [/QUOTE]
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