270-300 Win Mag now feasible

Discussion in 'Long Range Hunting & Shooting' started by Big Jake Duke, Jun 12, 2015.

  1. 270DT

    270DT Well-Known Member

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    Back from South Africa hunting with my 270-300 Win Mag and also testing the Hammer Sledge Hammer bullet in that rifle and my 416 Ruger. Too much to put in two places so feel free to take a look. Everything performed flawlessly rifles and bullets!

    2017 Trophy Game Safaris/Hammer Bullets Recap | Hammer Time
     
  2. Longtooth32

    Longtooth32 Well-Known Member

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    BJD, thanks again for the inspiration...

    Interesting part about our .277s...as I ran the conversions...it seems like 7mm=.276"...so are we actually running the true 7mm?

    Funny part about the speedier 270s...I waited over a year for one of the first Mausingfield, long action, mag face action...everything I read about the Mausingfield short actions were the cat's meow...I needed a longer mag box than my stock Mark V 270 Wby action to better utilize the longer .277 bullets...

    Ted, the owner of the American Rifle Company, who makes the actions...asked me what cartridge I was going to use with his long action (funny part about this, Ted, at the time, was running his company off his laptop)?

    I told him a 270 Wby. He was quiet and he just typed in my info...I think he was hoping one of his first long actions were going to a different cartridge...

    So with the longer mag box I was able to utilize most of the volume of the 270 Wby case shooting the 270 heavies...

    Who thought, with a cartridge older than me, that would push a year and a half old 170gr bullet to 3225 fps, pushed by RL26, with a huge jump to the lands...would work with a sub .5 MOA (well, I shoot mils)...

    You still have to try to get your gun to shoot the 270 (7mm?) heavies...
     
  3. Longtooth32

    Longtooth32 Well-Known Member

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    That looks like a great hunt...were you using the 133gr Hammers for your hunt? What fps were you pushing them to?
     
  4. 270DT

    270DT Well-Known Member

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    Yes I was using the 133 grain Sledge Hammer in the 270-300WM with a mv of 3,400 fps and the 400 grain Sledge Hammer in my 416 Ruger at a mv of 2,450 fps.
     
  5. Longtooth32

    Longtooth32 Well-Known Member

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    Well...

    I got drawn for Bull Elk...

    What bullet should I use...I still have a bunch of 165 Matrix and of course the 170 Bergers, both driven to over 3225 fps.

    What bullet do you think will be the most reliable on a bull Elk?

    Thanks...
     
  6. Big Jake Duke

    Big Jake Duke Well-Known Member

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    Well i shot the 165 matrix into hogs and they did the job, but last year i used the 140 grr Cutting Edge MTHs and i took a nice bull at 320 yards with a full pass thru he ran about 15 yards and piled up. I took a amaller bull at 250 yards and the dame thing.

    I shot that bullet into 7 big game animals last year two over 485 yards ( both deer ) and i have never recovered a bullet and except for the one bull, nothing else took a step. So if you want to try them i think you'll get them going over 3400-3500 with your set up and the bc is a varified .590

    Pm me if that sounds good 77 gr if retumbo or 69 gr of imr4350 are what i use in the 270-300.
     
  7. The Hock

    The Hock Well-Known Member

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  8. bigngreen

    bigngreen Well-Known Member

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    There is no way the BC on a CE .277 cal 140 will run .590!! The 130 is tested at .444 G1, I've shot a lot of the 140 6.5's and they don't even make that, when I was shooting the CE's I was less than impressed on elk, very narrow wound channels and the deflected badly once range was put on them and shooting elk in bone. For a copper bullet the Hammers are the best hunting bullet out there. All the copper bullets throw the brakes on fast so there pretty much a 0-600 ish range for me to see 100% joy.
    I've rolled a lot of elk with the 165 Matrix just under the 3200 fps range and they don't exit an exit an elk till you reach 600 ish yard but the level of internal damage is unmatchable!!
    I have not shot enough game with the 170 Berger to give an opinion on it but it is looking good so far.
     
  9. Big Jake Duke

    Big Jake Duke Well-Known Member

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    Well i don't know what to tell you other than using the .590 bc and my velocities i have first round hits past 700 yards If i was off by 100 bc points- that wouldnt happen.

    Matrix is a good bullet, i have shot hogs with them out of a 270AI. Very accurate.

    The Nosler LRAB is also good.

    I did stone 7 big game animals last year with one shot kills. I chased nothing and never recovered a bullet. Only one elk went about 15 yards, he was shot at 320 yards, complete broadside passthru. 2 hogs, three mule deer, two elk.

    Ive got nothing to prove- just reporting the facts. The Cutting Edge bullets were vastly superior to the Barnes on expansion. I have no experience with Hammer, i hope they are good too.
     
  10. B23

    B23 Well-Known Member

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    I know it's not one many are aware of but it would be a real easy one to neck down to 270 and that's a 270-7mm Blaser Mag. Same case capacity as a 7mm Rem Mag but the case is a little shorter and fatter than the Rem Mag so there'd be plenty of magazine length in any long action, Norma makes the brass so it's good quality and is easily available and it's not a belted case which is always a plus in my book. I have a 7mm Blaser mag and it shoots the 180 Bergers 3050 out of a 26in tube. I'd think a 165 or 170 in a 270-7mm Blaser mag would pretty easily be 3100+ from a 26in barrel and not burn a ton of powder to get there.

    Something to ponder for the 270 crowd.
     
  11. Big Jake Duke

    Big Jake Duke Well-Known Member

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    Thats interesting, do you mnow what the case capacity is? How much different is that from a 270 wsm?

    This project was started from a 300 win mag that needed rebrelling and a bucket of 300 win mag brass, but there are other options!
     
  12. bigngreen

    bigngreen Well-Known Member

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    The Blaser would be a beautiful round for the 270 cal heavies, it's like a WSM long.
    It's very easy to run wrong BC's and make first round hits at moderate ranges especially if you push them fast but they throw the parachute out and the range in which they stop functioning nicely is abrupt because of this. The 150 Berger is only .519 there is no way that a copper bullet 10 gr lighter will out BC it by any margin. The 130 CE is in the AB library at a tested .444 G1 so your not going to gain 100+ points of BC over 10 gr on the same design bullet. The only reason it's important is that impact velocity needs to be known when pushing them on range!!
     
  13. B23

    B23 Well-Known Member

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    Quickload shows the 7mm Blaser as 82.5 grains of water for case capacity, I've measured several of my cases and they were all slightly more than that and of the 5 or 6 that I measured, they all came out exactly the same in case capacity.

    Like bigngreen mentioned, it kind of looks like a long WSM case but with a little more body taper and a longer neck. I seriously considered doing a 270 Blaser to run the 170 Bergers, instead of the 7mm Blaser when I had mine built but at the time I was a little concerned about only having one or two high BC bullets to use. I've even considered a 270 Blaser "improved" to run the 170 Bergers but I don't know if enough would be gained to make it worth while.

    Not trying to hijack the thread just throwing out other options that many may not know exist.
     
  14. Longtooth32

    Longtooth32 Well-Known Member

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    Well BJD to resurrect this epic thread...going on an Elk hunt this Friday...decided to use the 170 EOL Bergers.

    Thanks for all your help to get us a reasonable priced 270 hot rod.

    I am done...the 170 Bergers are doing 8 S-D @ 3225fps.

    Shot this this morning at a hair over 200 yrds...yes...I missed one...

    200.jpg
     
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