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Rem 5r 300WM - 215 Berger Hybrid Velocity??

 
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  #1  
Old 05-30-2013, 11:09 PM
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Rem 5r 300WM - 215 Berger Hybrid Velocity??

First off I am shooting a 24" barrel Remington 5r in 300 Win mag. with 215 Berger Hybrids. Using Norma brass, CCI 250 primers and 74 grains of H1000 and seated to 3.63 OAL is where I have gotten the best accuracy. My velocity is avg 2600fps. i went up to 75 & 76 grains but my group opened up some. Will this 2600fps be good to shoot long range or should I keep tweaking to try and get more velocity?
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Old 05-30-2013, 11:21 PM
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Re: Rem 5r 300WM - 215 Berger Hybrid Velocity??

Here is the 3 shot group @100.
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Rem 5r 300WM - 215 Berger Hybrid Velocity??-image.jpg  
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Old 05-31-2013, 12:11 AM
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Re: Rem 5r 300WM - 215 Berger Hybrid Velocity??

That's good accuracy for sure, and it would work fine for long range, but you're leaving some performance on the table.

When I was doing the same thing you are, I came to a similar conclusion. The accuracy and velocity weren't coming together with the 215 Hybrid and H1000 in my 26" 5R. I then switched to H4831sc and ran it up to 72.5 - 73.0 grains with a CCI 250 at nearly identical OAL as yours and got fantastic velocity and accuracy with single digit ES. I run the 215s at 2835 fps in virgin brass and 2855 in fireformed.
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Old 05-31-2013, 05:52 AM
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Re: Rem 5r 300WM - 215 Berger Hybrid Velocity??

I found that when using 210VLD's in my 300WM Milspec, I was able to increase velocity using 76.5 gr H1000 at 2775 to 2904 with 79gr Retumbo. Accuracy of sub .5MOA was equivalent and ES was improved to single digits. I use Norma brass and 215's. Bullets are seated .010" off the lands.
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Old 05-31-2013, 09:08 AM
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Re: Rem 5r 300WM - 215 Berger Hybrid Velocity??

Have you seem any pressure sign yet? If not maybe go up a little more and see if accuracy comes back in. I will also add that 2600 seems low for 74 gr of H-1000, even from a 24". What chrono? Was it at least 18' from the muzzle? Have you tried to verify drops with that velocity at 700 plus? That might reveal a fibbing chrono. The advertised BC for this bullet has been go to go for me.

Jeff
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Old 05-31-2013, 10:38 PM
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Re: Rem 5r 300WM - 215 Berger Hybrid Velocity??

I am using a Competition Electronics ProChrono Digital Chronograph. I placed it approx 10' from the muzzle.

In regards to pressure, I have not seen any yet. Primers look good and bolt has not been sticky.
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Old 05-31-2013, 10:40 PM
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Re: Rem 5r 300WM - 215 Berger Hybrid Velocity??

I also have not shot this out past 100yards. This is the first rifle that I have ever reloaded for so I am somewhat of a rookie.
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