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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
New Rifle has me Perplexed
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<blockquote data-quote="Capt RB" data-source="post: 1867854" data-attributes="member: 85987"><p><em>The barrels were from Kreiger's button rifle division now Criterion barrels. The TR barrels were cut barrels in both the Vangard and MarkV version. Kreiger may have only lapped the VG barrels after reaming instead of after both processes but it sounds like your barrel was lapped like the current procedure after both reaming and cutting the grooves. That would leave the throat the only possible rough spot. A new or freshly sharpened reamer with the perfect pilot size would cut that down as well.</em></p><p><em> I've shot a bunch of 1st gen vangards and 7 gen2's 1 7mag wouldn't shoot more than 1 load sub moa. Most will shoot a variety of box ammo under 1moa and the ones I've worked with have shot at least 1 group in the .25 or better range with good load development. The only issues have been triggers and bedding. Mine was fixed with polishing the faces and spring for along time. I swapped it for a timney set at 20oz when my safety was suspect trying to get down this low with the factory trigger. </em></p><p><em> FWIW I would start loading now while the rifle is not showing copper. If nothing else for seating your preferred bullet. I would suggest using the 175tmk or 178eld for the 12tw. They shoot better beyond 600 than the 168/175smk in the wind. I shoot the 168's for classes mostly inside of 650yds. The 150 Lehigh in my rifle works out to a G1.520 at the speeds I run them at.</em></p></blockquote><p></p>
[QUOTE="Capt RB, post: 1867854, member: 85987"] [I]The barrels were from Kreiger's button rifle division now Criterion barrels. The TR barrels were cut barrels in both the Vangard and MarkV version. Kreiger may have only lapped the VG barrels after reaming instead of after both processes but it sounds like your barrel was lapped like the current procedure after both reaming and cutting the grooves. That would leave the throat the only possible rough spot. A new or freshly sharpened reamer with the perfect pilot size would cut that down as well. I've shot a bunch of 1st gen vangards and 7 gen2's 1 7mag wouldn't shoot more than 1 load sub moa. Most will shoot a variety of box ammo under 1moa and the ones I've worked with have shot at least 1 group in the .25 or better range with good load development. The only issues have been triggers and bedding. Mine was fixed with polishing the faces and spring for along time. I swapped it for a timney set at 20oz when my safety was suspect trying to get down this low with the factory trigger. FWIW I would start loading now while the rifle is not showing copper. If nothing else for seating your preferred bullet. I would suggest using the 175tmk or 178eld for the 12tw. They shoot better beyond 600 than the 168/175smk in the wind. I shoot the 168's for classes mostly inside of 650yds. The 150 Lehigh in my rifle works out to a G1.520 at the speeds I run them at.[/I] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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New Rifle has me Perplexed
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