Re: 30/338 Lapua
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?
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