Re: Range Report: Alliant 2000-MR
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: memilanuk</div><div class="ubbcode-body">pcschwenke: I updated that post with the charge weight: 46.5gn
Down South: I just ordered a couple jugs of this stuff from Powder Valley as well. Hopefully it'll be here by late next week or so. I still have >= 1/2 lb of this batch (two 1lb. bottles), so if time allows I might be able to do some chrono testing.
I haven't used CCI BR2 primers for years... accuracy was never an issue, just couldn't match the ES/SD numbers of 210Ms with Varget or N150 behind a B155VLD - and later B155.5BT. It may be possible that the BR2s would work better with the ball powder and/or heavier bullet.
FWIW, I do my initial load tune by going with a lower charge weight and tuning seating depth for what appears to be best accuracy. The idea being to get 'close', and not end up chasing my tail trying to test charge weights at a seating depth the barrel doesn't like. Usually I do go back and fine-tune the seating depth a bit later once I have a final charge weight - and I haven't done that yet on this barrel/load. Right now the B185 OTMs are 10 thou back (-0.010") from a hard jam.
Unfortunately I'm kind of heading into a time crunch period so further testing may not be as... complete as I would like.
What I'm really looking forward to with this stuff is setting up my Dillon RL-550B with ye ole' yank-n-crank powder measure, some S190MKs, and churning out rounds for my little tacticool Sav 10PC...
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I don't know for sure if the CCI's will drop your ES but it did mine with this powder/bullet combo. Like you said, maybe its cause its a ball powder with heavy bullets. Now, with my other 308 I have a really good load worked up with Varget/168 VLD and Fed 210 match primers that has a good ES. Never tried 2000mr in that rifle as I already had the Varget load worked up and it shoots great so I didn't fool with it but i'm not getting the speed I get with 2000mr. I'm curious to see your results with further testing and if you try the CCI primers. Keep us updated, thanks.