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230 gr Berger OTM Transonic

 
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  #29  
Old 09-13-2012, 09:06 PM
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Re: 230 gr Berger OTM Transonic

300 RUM RL25 90.0 grs, 30 inch Rock Creek 5R ,1-10 twist barrel, 3130 fps, very accurate, I am very impressed with the 230 gr Berger !
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  #30  
Old 10-31-2012, 04:31 AM
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Re: 230 gr Berger OTM Transonic

You guys maid me take the plunge, ordered two boxes of the 230's. Im shooting 300 Win. a 26" CBI barrel. Been shooting 200 grain accubond with 74.5 grains rl-25 at 2895. Broz I have h1000 federal 215m primers and ww brass. What is a good start point to work up loads? I am going to start. 002 jump, thanks for the info.

Last edited by TrophyHunter_colorado; 10-31-2012 at 06:36 AM.
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  #31  
Old 10-31-2012, 08:35 AM
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Re: 230 gr Berger OTM Transonic

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Originally Posted by TrophyHunter_colorado View Post
Broz I have h1000 federal 215m primers and ww brass. What is a good start point to work up loads? I am going to start. 002 jump, thanks for the info.
I would start at 68 gr and work up 1/2 gr at a time. You will probably end up about 72 gr but that is dependant on barrel and chamber so always work up.

Jeff
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  #32  
Old 10-31-2012, 09:06 AM
B23 B23 is offline
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Re: 230 gr Berger OTM Transonic

Jeff, if you could launch the 230's around 3150-3250FPS do you think you would be more inclined to use them over the 215's???
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  #33  
Old 10-31-2012, 09:07 AM
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Re: 230 gr Berger OTM Transonic

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Jeff, if you could launch the 230's around 3150-3250FPS do you think you would be more inclined to use them over the 215's???
Yes, even at 3000.

Jeff
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  #34  
Old 11-03-2012, 01:14 AM
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Re: 230 gr Berger OTM Transonic

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Originally Posted by Broz View Post
I would start at 68 gr and work up 1/2 gr at a time. You will probably end up about 72 gr but that is dependant on barrel and chamber so always work up.

Jeff
Broz I have shot a ton of load data the past two days. Starting seating depth was 2.818 coal, h1000 and federal 215M primers. At 71 grains shot .851 with no vertical and at 73 grains shot 1.13 inch group with .5 inch vertical. All shots were at 200you yards with bipod and rear bag in the prone. Speed at 73 grains speed was 2865a with single digit SD! Messed with seating depth out to 2.822 down to 2.816. Groups were ugly except for 2.818 still shot .5 MOA. Shot data to 400the before it got dark held for no wind and program called for 4.2 MOA, applied dope and wammo center steel. My wife shot next and she shot 3/4 moa with winds variable to 4mph then shot a .5 MOA group
And then it got dark.

These speeds sound fast for my load. There is no pressure signs at all. I worked my loads from 68 grains
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  #35  
Old 11-03-2012, 08:28 AM
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Re: 230 gr Berger OTM Transonic

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Originally Posted by TrophyHunter_colorado View Post
Speed at 73 grains speed was 2865a with single digit SD!
in a 26" 300 win that sounds about at least 100 fps high for your charge.

The seating depths you listed tell me very little as I have no idea how far off the lans you are unless I had the same reamer as was used for your rifle.

Never the less if you have 1/2 moa accuracy and was on at 400 take it on out farther. Ifthe velocity is too high in your program, the hits will start to go lower with added distance.


What chronograph and what altitude?

Jeff
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