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Reloading Berger Bullets


Are these tumbling? 225 gr Hornady BTHP's in 300 WM

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Unread 05-13-2013, 09:15 PM
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Re: Are these tumbling? 225 gr Hornady BTHP's in 300 WM

With a 1-10 that is not the issue, if it was speed related it would take more yardage to show up and it usually shows up with dropping a bullet low every once in a while. Make sure sure the bore is in good shape and not whanking the bullet causing thing to go side ways so early.
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    Unread 05-14-2013, 02:22 PM
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    Re: Are these tumbling? 225 gr Hornady BTHP's in 300 WM

    Originally Posted by westcliffe01 View Post
    You are positive that you were not hitting low and having the bullet ricochet up at the target ? You don't mention the shooting distance, but I would expect a 225 to hit lower than a 150 at short range simply due to the time of flight being longer and it would therefore be dropping more. Whats the difference in MV ? Should be at least 300fps right ? At long range the 225 would retain a lot more energy and would end up going faster than a 150 and thus would actually drop less at the end.
    Well I am embarrassed to say it, but this is the group I just shot, with yardstick to indicate how much they were dropping:

    Do the holes still seem a bit odd?? It is clear from how much lower they are hitting that these were doing exactly as you thought.

    These were at 100 yards w/ some cross wind and were over 76 gr of Retumbo. These gave me sticky extraction so it looks like I need to go no higher than 75 gr and work with seating depth some.
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    Last edited by cowboyarcher; 05-14-2013 at 02:57 PM.
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    Unread 05-18-2013, 04:09 AM
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    Re: Are these tumbling? 225 gr Hornady BTHP's in 300 WM

    Originally Posted by cowboyarcher View Post
    I suppose it's possible they were hitting the dirt, but there was only the one dust cloud on the first shot. I suppose I should shoot a group at 25 and 50 just to double check. These were fired at 100 yards.
    The only time I had bullets hitting dirt in front of a target was using 77gr bullets in a Rem 22-250. They were so wildly unstable they were hitting the hit 25-50 yds out from the bench. No wonder they won't the paper.
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    Unread 04-24-2015, 07:59 PM
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    Re: Are these tumbling? 225 gr Hornady BTHP's in 300 WM

    I just measured one and I got 1.582 inches. My Bergers are a little longer OTMs and Target 230s.

    I have a 9 twist on my rifle so I have a SG of 1.94 Anything over 1.4 is deemed as stable by Mr. Litz.
    When I run the numbers with a 10 twist it is 1.57 so you should be fine but I agree with the gentleman that said "if your getting anything other than a nice round hole you have some tumbling going on...." It looks like that is what is going on IMO.

    Good luck and God Bless this country.
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