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minniehill 01-13-2013 09:34 PM

300 RUM load dev
2 Attachment(s)
I just bought a new sendero
I zeroed out at 60 yards (4shots)with factory 165gr. Then moved out to 200 yards and fired 9 shots 200gr AB's with H1000 powder 88gr -92gr moving up by 0.5 per shot. 2820-3005fps
2989 and 3005 fps were out of group.
Pretty Darn happy for just load development stage. Next trip will be 90.5gr @2920fps @400 to see if they hold together.

awaysaway 01-13-2013 10:32 PM

Nice brake. Is that factory?

minniehill 01-14-2013 12:04 AM

Aftermarket and love it. I think it makes the big RUM comparable to my 22-250! FPorted_Muzzle_Brakes.php#2987

awaysaway 01-14-2013 09:56 PM

Sweet! Thanks for the link.

minniehill 02-24-2013 12:07 PM

Bam bam !!

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rockratt 02-24-2013 01:27 PM


Originally Posted by minniehill (Post 1092537)

Thanks for the post. Couldn't open from the link but was able to Google and find them. Thats the brake I have been looking for. Nice shooting iron too by the way.

locutus 02-24-2013 04:16 PM

Nice groups.:)

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