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Am I really spitting these Bergers at 3200 fps????

 
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  #8  
Old 11-19-2013, 09:22 AM
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Location: Arizona
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Re: Am I really spitting these Bergers at 3200 fps????

Ok, I went to the range last night and brought my chrony with me. I set up my fancy power wheels box with a piece of brown rapping paper on it. I drew a straight line on the box and put a mark at the base of it. I also put marks up the line at 5", 10", 15", and 20". I adjusted my scope according to each mark and fired 2 at each adjustmnet. All of them were right on the money. They all tracked straight up the line I drew. So I started to think about the chrony again. My velocities where taken when I was working up my load for my rifle. The last time I used my chrony, I only had 80-90 rounds down the pipe. Now I'm sitting closer to 300. So I set up the chrony again last night and fire 5 rounds through it. To my surprise, my average was 3159 fps with a difference of 12 fps between the 5 rounds. Is it possible for a barrel to get faster? Thanks everyone so far for the help.
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Savage 111 Trophy Hunter XP 7mm Rem Mag
Vortex Viper PST 2.5-10x44 EBR-1 MOA scope
BlackHawk 0 Moa picatinny rail
BlackHawk 30mm rings
BlackHawk Bipod
Rifle Basix Sav-2 Trigger
168gr Berger VLD Huning Bullets
Remington Brass
WLRM Primers
H1000 69.4 grains
Bullets seated .010" off the lands

Howa 1500 .243
Nikon Prostaff BDC 3-9x40
Custom Cherry Wood Stock (Action bedded, barrel floated)
Winchester Brass
87 gr Berger VLD
WLR Primers
Still working on load
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  #9  
Old 11-19-2013, 10:19 PM
BMF BMF is offline
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Re: Am I really spitting these Bergers at 3200 fps????

Very possible, and probable that it gets faster and it should top out between 80-120 rounds.
But 3159fps........that's smoking. Any pressure signs?

Also if you're not comfortable with your chrono reading you can always shoot at an extended range, 400, 500, or whatever really. But keep your turret zeroed. Then just see how many inches it drops at any of them ranges. Then punch the 3159fps info into your ballistic program and see if it matches your actuall drop in inches.
Brent
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  #10  
Old 11-20-2013, 10:26 AM
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Join Date: Mar 2013
Location: Arizona
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Re: Am I really spitting these Bergers at 3200 fps????

Quote:
Originally Posted by BMF View Post
Very possible, and probable that it gets faster and it should top out between 80-120 rounds.
But 3159fps........that's smoking. Any pressure signs?

Also if you're not comfortable with your chrono reading you can always shoot at an extended range, 400, 500, or whatever really. But keep your turret zeroed. Then just see how many inches it drops at any of them ranges. Then punch the 3159fps info into your ballistic program and see if it matches your actuall drop in inches.
Brent
I agree, that is smokin!!! I am extremely sensitive to detail when loading my rounds. No I don't have any pressure signs. I was able to shoot 71.5 gr of H1000 before I had a heavy bolt lift and had signs of high pressure when finding my max load. I'm only shooting 69.4 gr as of now. I have been using the same 40 pieces of brass for 7 firings now. The brass is in good shape still, so I'm where I need to be. Tomorrow I am going to go back to the range and do exactly what you mentioned. I am going to get my drops from 200 all the way to 800 yards. Then I am going to input the information to get my fps. I don't really trust my chrony, considering how cheap it was to buy. I'll be sure to take pictures of everything this time to show everyone. I took the day off from work to do it. My elk hunt is getting too close for me to not be exact on my drops. From 100 to 500 I am 100% confident in my abilities. But from my scouting trips, I may have to take a 600-700 yard shot which I feel about 75% confident in taking right now. 75% isn't enough for me to take a shot at this time. I'm a firm believer in being 100% sure in your shot. So hopefully in the next two weeks I can be at that point.
__________________
Savage 111 Trophy Hunter XP 7mm Rem Mag
Vortex Viper PST 2.5-10x44 EBR-1 MOA scope
BlackHawk 0 Moa picatinny rail
BlackHawk 30mm rings
BlackHawk Bipod
Rifle Basix Sav-2 Trigger
168gr Berger VLD Huning Bullets
Remington Brass
WLRM Primers
H1000 69.4 grains
Bullets seated .010" off the lands

Howa 1500 .243
Nikon Prostaff BDC 3-9x40
Custom Cherry Wood Stock (Action bedded, barrel floated)
Winchester Brass
87 gr Berger VLD
WLR Primers
Still working on load
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  #11  
Old 11-20-2013, 10:53 AM
BMF BMF is offline
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Join Date: Jul 2008
Location: Near Fowler/St Johns...Michigan
Posts: 149
Re: Am I really spitting these Bergers at 3200 fps????

Good luck. Even though i dont own a 7mm, I am interested in your results.
Brent
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  #12  
Old 11-20-2013, 12:08 PM
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Join Date: Nov 2008
Location: SW Montana
Posts: 4,434
Re: Am I really spitting these Bergers at 3200 fps????

Usually 69gr of H1000 in a 7 mag with a 168 Berger will be right in the 3000fps range in every one I've loaded or know of, it's kind of a go to load.
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