JDOXO,
You post about 270 170 gr bullet was posted 2012
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Join Date: Feb 2012
Posts: 397
Berger .277 EOL Extreme Heavy Hybrid 170 Grain.
Over the last couple days I have been able to begin the initial testing of the .277 170 grain Berger EOL Extreme Heavy Hybrid bullet. For the testing McMillan was able to put together a prototype EOL MTN Xtreme Rifle chambered in 270 WSM. This is not the exact configuration we intend on going with in our rifle line, but would work for the initial testing.
Now to confirm, this bullets is 1.520" in length and 170 grains, with a estimated B.C. of .703. This is one slick bullet for sure!
Our testing is planned for 3 steps. 1st is to test the bullets at the speeds we consider on the lower end. 2nd is to absolutely try to destroy them at the most extreme speeds we can push them. 3rd is, if the bullet make it past step 2, to push them at conventional speeds. Currently step 1 is complete!
Today wrapped up, a success in my mind, pushing the bullet 2825 FPS out to 1000 yards for function, and accuracy, also checking the estimated B.C. calculations. I shot approx 100 rounds through the 1-8 twist bbl and hit dang near everything in sight! With the occasional bad wind call, a miss or two were claimed as well! But the point being at the initial test speed of 2825 the B.C. estimate stayed true, accuracy was in check, and function was perfect.
I will attach a couple pics of the average groups during testing. One is at 600 yards, which I consider closer long range shots, and the second is at the 1000 yard mark. The conditions were: 85 degrees with 60% humidity and was 28.20 barometric pressure. Definitely some parallax to deal with. We (Bob Beck, Eric Stecker, Bryan Litz) strongly believe when we ultimately begin to optimize the velocity for this bullet, the results will only stand to improve significantly. So I am excited to get to the next round of testing!
Attached Thumbnails - Click to View Larger
Berger .277 EOL Extreme Heavy Hybrid 170 Grain.-img_0105.jpg Berger .277 EOL Extreme Heavy Hybrid 170 Grain.-img_0104.jpg
Berger selling jackets to matrix and they been making 270 bullet 165gr/175gr
http://www.matrixballistics.com/.277-Caliber-rifle-bullets.html
I wouldn't count on Berger for heavy 270 bullets their two years behind on trying to get out 7mm 195grVLD