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Old 01-01-2007, 07:33 PM
  #6  
ranger140892
 
Join Date: Aug 2006
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Posts: 299
Default RE: Slowest STW known to man

Give slower burning powders a try with that 26" barrel. IMR7928 is a little fast for a large capacity cartridge like that.

The last rifle I built for myself is a 700 in 280 Rem. I went with a 26" barrel for some silly reason. Every load I shot through it was way slower than the maunals said. I finally figured that since I was using a 26" barrel that maybe chamber pressure was dropping off while the bullet was still in the bore. So, I started experimenting with powders that were slower than listed loads. It worked. Now I get the velocity without the hot loads.

I also go the other direction with my XP100 pistols in 308 Win and 243 Win. Both have 17" barrels, so to get the velocity I want, I started with the fastest powders listed, then went off the chart to even faster powders. My deer load with the 308 is a Barnes 150 gr TSX with RL12 and it's moving at just under 2700 fps. Elk load is a 165 gr TSX, RL15 at 2550 fps.Pretty fast for a handgun.

Long story short, get a burn rate chart, and experiment....Safely!
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