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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
30/338 Lapua
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<blockquote data-quote="Brent" data-source="post: 25641" data-attributes="member: 99"><p>Darryl, </p><p></p><p>what is the case capacity difference on the improved version of yours? I seem to only be able to come up with a grain and a half difference no matter how I design the improved cartridge?</p><p></p><p>On your 338/416, I moved the shoulder forward a full .100" and gained 5.0gr capacity, I would have thought "10.0", but not the case. Your neck on the 338/416 is very long and this was easy to do, with the Ultra's already short neck I'm just not seeing it come even close?</p><p></p><p>3235 with a 240, that's almost 400 fps faster than my Ultra would likely do at max load and my barrel is just 8 inches shorter, that's 50 fps an inch?</p><p></p><p>Here's a post of Boyd's I saved from a month ago to work up a 240 SMK when I found some, it seems about right, so I'm totally perplexed here?</p><p></p><p>Boyd Heaton </p><p>One Of Us </p><p>Member # 5999 posted 01-20-2003 05:04 </p><p> </p><p>Try 178gr A-Max's and 93 to 96gr of RL25 or Retumbo..If accuracy is what you're looking for try 80 to 83gr of RL25 or Retumbo with a 240gr MK....They will be slow....Around 2750 to 2800.</p><p></p><p>[ 01-20-2003, 05:07: Message edited by: Boyd Heaton ]</p><p></p><p>--------------------</p><p>Boyd Heaton Assistant Pit Chairman.Original Pennsylvania 1000 Yard Benchrest Club</p><p> </p><p>Posts: 354 | From: Pa | Registered: Jul 2001 | IP: Logged</p></blockquote><p></p>
[QUOTE="Brent, post: 25641, member: 99"] Darryl, what is the case capacity difference on the improved version of yours? I seem to only be able to come up with a grain and a half difference no matter how I design the improved cartridge? On your 338/416, I moved the shoulder forward a full .100" and gained 5.0gr capacity, I would have thought "10.0", but not the case. Your neck on the 338/416 is very long and this was easy to do, with the Ultra's already short neck I'm just not seeing it come even close? 3235 with a 240, that's almost 400 fps faster than my Ultra would likely do at max load and my barrel is just 8 inches shorter, that's 50 fps an inch? Here's a post of Boyd's I saved from a month ago to work up a 240 SMK when I found some, it seems about right, so I'm totally perplexed here? Boyd Heaton One Of Us Member # 5999 posted 01-20-2003 05:04 Try 178gr A-Max's and 93 to 96gr of RL25 or Retumbo..If accuracy is what you're looking for try 80 to 83gr of RL25 or Retumbo with a 240gr MK....They will be slow....Around 2750 to 2800. [ 01-20-2003, 05:07: Message edited by: Boyd Heaton ] -------------------- Boyd Heaton Assistant Pit Chairman.Original Pennsylvania 1000 Yard Benchrest Club Posts: 354 | From: Pa | Registered: Jul 2001 | IP: Logged [/QUOTE]
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30/338 Lapua
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