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OP
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any body got loads for 1:12 rock river 24 in barrel?
thanks
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Joined: Jan 2006
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Campfire Tracker
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Campfire Tracker
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Haven't used it specifically in a RRA 1:12, but I have used Benchmark with 52 or 53gr Matchkings in a Rem VSSF with 1:12 twist with very good results.
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Campfire 'Bwana
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Campfire 'Bwana
Joined: Feb 2002
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Hornady 60 gr Vax with 26 gr of Varget , Rem 7.5 BR Primers . Chronograph from my AR with 16 inch barrel at 2804. Would be much faster from a 24 inch barrel . All my AR's group this load 1/2 or better.
A Doe walks out of the woods today and says, that is the last time I'm going to do that for Two Bucks.
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Joined: Feb 2012
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Hornady 60 gr Vax with 26 gr of Varget , Rem 7.5 BR Primers . Chronograph from my AR with 16 inch barrel at 2804. Would be much faster from a 24 inch barrel . All my AR's group this load 1/2 or better. are the 60's not keyholing with that slow of a twist?????
I predict future happiness for Americans if they can prevent the government from wasting the labors of the people under the pretense of taking care of them.
-Thomas Jefferson
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Joined: Jan 2005
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Campfire Kahuna
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Campfire Kahuna
Joined: Jan 2005
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I"d bet that the 60s will stabilize. Just barely but probably ok.
We can keep Larry Root and all his idiotic blabber and user names on here, but we can't get Ralph back..... Whiskey Tango Foxtrot, over....
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Joined: Nov 2010
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Campfire Regular
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Is a 1:12 twist better for 55 and lighter weight bullets
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Joined: Feb 2002
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Campfire 'Bwana
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Campfire 'Bwana
Joined: Feb 2002
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The 1&12 should work fine with the Hornady 60 gr V-Max , Hornady bullets are usually shorter than other brands. Try them and see, you may be glad you did.
A Doe walks out of the woods today and says, that is the last time I'm going to do that for Two Bucks.
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Joined: Nov 2010
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I just got a CZ American with the 1&12 and a buddies of mine told me it wouldn't shoot very well with anything over a 55 gr
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Joined: Oct 2011
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Campfire Outfitter
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Sighting in my Cz527 I thought I'd use some 62 grainers to get on paper at 25 yards. They went through sidways.
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So anything over 55 gr is a waste of time .not that I need a bullet that heavy just wondering on the limits this rifle will handle
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Joined: Feb 2012
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Campfire Regular
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So anything over 55 gr is a waste of time .not that I need a bullet that heavy just wondering on the limits this rifle will handle Yes, typically the max for a 1:12 is 55gr 1:9 is roughly a 65gr max 1:7 can handle the real heavy stuff
I predict future happiness for Americans if they can prevent the government from wasting the labors of the people under the pretense of taking care of them.
-Thomas Jefferson
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Campfire Tracker
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A 1/12 will do well with a lead core flat base 60-64 grain bullet such as the 60 gr Nosler Partition, 60 gr Hornady SP or HP, 64 gr Winchester Power Point semi spitzer or a Sierra 63 gr semi spitzer. It's the boat tails and plastic tips, which make the bullets longer for their weight, that keeps the heavier V-Max style bullets from being as good in a 1/12 twist.
Last edited by wildhobbybobby; 04/03/13.
Life is like a purple antelope on a field of tuna fish...
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Joined: Nov 2010
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Yeah thanks for the info I also picked up a #1 in 22/250 I have only been shooting factory 50 gr out of that .I think that has a 1/12 ? It seems to like that weight bullet
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Joined: Dec 2009
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Campfire Tracker
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.22/250's usually come with a 1/14 twist.
Last edited by wildhobbybobby; 04/03/13.
Life is like a purple antelope on a field of tuna fish...
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OK 1/14 so in the 22/250 is it the same rule 55 gr and down
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Campfire Tracker
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Generally yes, but the 14 inch twist will generally handle the 60-64 grain flat base lead core bullets too at the higher velocities that the .22/250 produces..
Last edited by wildhobbybobby; 04/03/13.
Life is like a purple antelope on a field of tuna fish...
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A 1/12 will do well with a lead core flat base 60-64 grain bullet such as the 60 gr Nosler Partition, 60 gr Hornady SP or HP, 64 gr Winchester Power Point semi spitzer or a Sierra 63 gr semi spitzer. It's the boat tails and plastic tips, which make the bullets longer for their weight, that keeps the heavier V-Max style bullets from being as good in a 1/12 twist. This. I have a CZ527 in 1:12 and it will shoot Nosler Partitions and the Hornady 60 gr. SP (#2270), but not the bigger, sleeker bullets. Varget is a good powder, but I prefer H4895. A lot of good powders for the 55-60 grainers though. What is the OP's intended purpose? I have used my CZ 1:12 to shoot quite a few game animals....
Last edited by UncleJake; 04/03/13.
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Campfire Outfitter
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Glad to hear the UncleJake. Also have some h4895 on hand. Whats your load?
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