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Flabergasted and dumbfounded

Thank you all for your help.

I think I got the problem cleared up. I cleaned the barrel off and on for three days, using liberal amounts of Hoppes, patches, ammonia, alcohol and a little bore polish paste and last but not least; Sea Foam. I think the latter being what did the trick.

Additionally, this week I prepped all my Lapua brass and after cleaning I annealed the necks. The prepping process was made somewhat easier and quicker with the Frankford Arsenal Case Trim and Prep Center. This is a tough little machine and I really like it!

I used the same load as before (59.0gn Retumbo, CCI BR2's, 140gn A-Max) and sighted in at 100yds. My POI was 2" low. That was strange, as before I cleaned it the same load printed 3.25" hiigh. Made me realize how much that build-up affects my MV and chamber pressure.

After setting my scope, I dialed for 996yds, first group was 4" with all bullets drilling paper as they should. After shooting a couple more groups, my partner and I moved to 1096yds and I shot a 8"group, again perfect little .26 caliber holes. Those are not competition winning groups but I was happy with the outcome of this weeks corrective action.

Again guys, thanks!

P.S. My OAL didn't revert back to my journal entry, soooo I guess that was a mistake on my part. My seating die was locked in to the correct OAL. Good thing I check OAL a lot! JohnnyK.
 
Great news! Congratulations.


Didn't recall your velocity, but I bet it's smoking.
I'm at 57.5 Retumbo Br2 and 140 vld at 3010fps in 24" bbl. @ 700' ASL.
(This lot of Retumbo is much faster than my last lot.)
 
Initially, it averaged out at 3038fps, that was before all this. I will test it this week after work (if I can). Your powder is definately hotter than mine, as my barrel is 26". I don't have much of this lot left (1/2lb) so I think I'll get a 8lb jug next. Found it for $212.00, locally.

Retumbo was on the top of my birthday list and for some reason my entire family couldn't find it! I got 3lbs of RL25, 2lbs of RL22, 1 each of IMR7828, RL17, IMR4831 and Hybrid 100, but I am not complaining.

Great setup; powder for my birthday in June and bullets for Christmas! I can almost stay stocked up! :)

JohnnyK.
 
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