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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Ideas for New .277 build
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<blockquote data-quote="yorke-1" data-source="post: 2218016" data-attributes="member: 11960"><p>I get 3440 FPS with the 156 Hammer from a 270/338 RUM variant with a 28" barrel and 3330 FPS with the same load in a 25" barrel. I can get another 100 fps but this chambering has proven to be very picky about loads, so I just settled on the velocity that shoots best. A straight 27 Nosler should be able to hit your velocity without too much trouble. </p><p></p><p>I went with a 338 RUM case with the shoulder position of the RUM and the shoulder diameter and angle of the 27 Nosler. This gives a slightly improved 270/338 RUM and basically a 27 Nosler that's been stretched by about .185". The idea was just to be able to use ADG 338 RUM brass.</p></blockquote><p></p>
[QUOTE="yorke-1, post: 2218016, member: 11960"] I get 3440 FPS with the 156 Hammer from a 270/338 RUM variant with a 28” barrel and 3330 FPS with the same load in a 25” barrel. I can get another 100 fps but this chambering has proven to be very picky about loads, so I just settled on the velocity that shoots best. A straight 27 Nosler should be able to hit your velocity without too much trouble. I went with a 338 RUM case with the shoulder position of the RUM and the shoulder diameter and angle of the 27 Nosler. This gives a slightly improved 270/338 RUM and basically a 27 Nosler that’s been stretched by about .185”. The idea was just to be able to use ADG 338 RUM brass. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Ideas for New .277 build
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