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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
270 caliber taken to a totally differnet level, 195 gr ULD RBBT....
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<blockquote data-quote="Fiftydriver" data-source="post: 114684" data-attributes="member: 10"><p><strong>Re: 270 caliber taken to a totally differnet level, 195 gr ULD RBBT...</strong></p><p></p><p>Roy,</p><p></p><p>Since your rifle will be a single shot I would recommend throating the rifle so that the 169.5 gr ULD RBBT was seated just above the base of the neck/shoulder junction. This will allow the use of both bullets with adiquate neck tension on both and use up as little case capacity as possible. You may need to pull the bolt to eject a live round though.</p><p></p><p>This is pretty much how Richard 277 AM is throated and it worked very well with 169.5 gr ULD RBBTs and 195 gr ULD RBBTS. You do not want to stick yourself with only one bullet choice so this throat length is about the best. Will even work with lighter bullets in the 140 and 150 gr range if needed.</p><p></p><p>Either WC872 or US869 will work great. From what I am seeing, US869 will get you to top pressures about 3-4 grains faster then WC872. THis is with the lots I have so it will surely chance from lot to lot.</p><p></p><p>Both will work very well though.</p><p></p><p>Kirby Allen(50)</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 114684, member: 10"] [b]Re: 270 caliber taken to a totally differnet level, 195 gr ULD RBBT...[/b] Roy, Since your rifle will be a single shot I would recommend throating the rifle so that the 169.5 gr ULD RBBT was seated just above the base of the neck/shoulder junction. This will allow the use of both bullets with adiquate neck tension on both and use up as little case capacity as possible. You may need to pull the bolt to eject a live round though. This is pretty much how Richard 277 AM is throated and it worked very well with 169.5 gr ULD RBBTs and 195 gr ULD RBBTS. You do not want to stick yourself with only one bullet choice so this throat length is about the best. Will even work with lighter bullets in the 140 and 150 gr range if needed. Either WC872 or US869 will work great. From what I am seeing, US869 will get you to top pressures about 3-4 grains faster then WC872. THis is with the lots I have so it will surely chance from lot to lot. Both will work very well though. Kirby Allen(50) [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
270 caliber taken to a totally differnet level, 195 gr ULD RBBT....
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