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270 trajectory

 
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  #15  
Old 06-11-2009, 04:19 PM
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Join Date: May 2009
Posts: 26
Re: 270 trajectory

Montana, I have a Nikon lazer 800 range finder and on my 270 tikka t3 i have a Nikon buckmaster 4.5 x 14 x 40. I have been very happy with all three.I have a 6.5 x 284 built by Sams Custom Gun Works that shoots better but it weighs 19.5 lbs and i am getting too old to carry it. My Tikka is zeroed at 100 yds, shoots a three eights inch group on good days one inch on not so good days. It drops 2" at 200, 13" at300 and 27" at 400. I have shot every factory bullet made over the last two years and thank god it likes the Rem coreloc 130 gr soft pt best. I love the seirra match king bulletts so i tried the 135 gr sie match king with imr 4831 but did not have any luck.Thats why I started this thread and from what i have learned so far I think i will start with the 130 gr sie bt although from my experience with the 6.5 x 284 howa i may try the horn 130 gr A Max. Any thoughts anyone?
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  #16  
Old 06-11-2009, 04:50 PM
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Join Date: Jan 2004
Location: Blackfoot, Idaho
Posts: 8,204
Re: 270 trajectory

deadend,

Your rifle, scope and range finder are a good combination.

The drops at range seem a bit on the steep side.

Sierra match kings don't have the best of BCs.

Give the barrel a good cleaning removing all copper residue then try some RL-22, CCI-200 primers and 130 Nosler Ballistic Tips. Start the powder weights in the low 50s, sneak up maybe 0.5gr at a time. You may be getting near max by 56 or 57 grains.

If you have no pressure problems with 60gr of IMR 4831 you should be good to "maybe" 58 of RL-22. If so, and she's accurate, those bullet drops down range will drop significantly.

Be care on the pressures though.

PS: What's this Sir stuff.
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  #17  
Old 06-11-2009, 05:59 PM
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Join Date: May 2008
Location: South of Canada and North of Wyoming
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Re: 270 trajectory

If I was loading LR rounds for a 270 I would start with the higher BC bullets first and work down. Hornady's are advertising slightly higher BC's than the Noslers. So I would probably start with the 150 SST and Interbond, then move to the 140's and then try the 140 Accubond. By the time you find your pet load you shold need a new barrel, but you'll be having fun

I would aslo zero my 270 @ 200 yds and take the guess work out of shots inside 300, but that's just me.
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  #18  
Old 06-11-2009, 07:06 PM
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Join Date: May 2009
Posts: 26
Re: 270 trajectory

Roy, I just got it lapped by sams custom gun works and my first three shots printed 3" high at 100 yds and a 3' group. I was sick. it shot better before. the next seven shots over about one hour started settling down and the last three were dead on in a 3/8" group I guess it took that many shots to foul it after lapping and thats with factory ammo. My rifle likes the chaepest cartridge made. lucky me, huh. the drops i posted were with rem 130 gr coreloc. thats what i hunted with last year. how I will take some of this info y'all shared and get back to handloading. again, thanks to all
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  #19  
Old 06-11-2009, 11:41 PM
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Join Date: Mar 2005
Location: Utah
Posts: 1,377
Re: 270 trajectory

You own a 19.5lb custom 6.5-284 and don't understand external ballistics? There must be a story here.
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  #20  
Old 06-12-2009, 12:24 AM
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Join Date: Jun 2003
Location: Hermiston, Oregon
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Re: 270 trajectory

Roy

Just curious as to why you would be careful with shooting at elk from 1100- 1200 but you wouldn't hesitate to shoot at a deer.

Deer are a lot smaller target, therefor have a lot less room for margin of error. Thats the way I see it anyways. So in all reality your max range for elk should be greater then that of a deer I would think.

I know elk require a little bit more energy to kill, but still there vitals are about 2x the size of deer.

I would have no problems shooting elk from 800- 1000 with my 7 RM or 338 EDGE, but I would be hesitant on deer past 800.

Not trying to start anything, just trying to understand your side of things.
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  #21  
Old 06-12-2009, 12:55 AM
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Join Date: May 2008
Location: South of Canada and North of Wyoming
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Re: 270 trajectory

Quote:
Quote:
Originally Posted by remingtonman_25_06 View Post
Roy

Just curious as to why you would be careful with shooting at elk from 1100- 1200 but you wouldn't hesitate to shoot at a deer.

Deer are a lot smaller target, therefor have a lot less room for margin of error. Thats the way I see it anyways. So in all reality your max range for elk should be greater then that of a deer I would think.

I know elk require a little bit more energy to kill, but still there vitals are about 2x the size of deer.

I would have no problems shooting elk from 800- 1000 with my 7 RM or 338 EDGE, but I would be hesitant on deer past 800.

Not trying to start anything, just trying to understand your side of things.
I'm not answering for Roy, I'll let him do that, but this is how I look at it.

One rule I've learned that I *try* to follow is that one should not exceed ones limitations. I see two sets of limitations in this question. The first is the external and terminal ballistics limitations of the cartridge and load. Will the bullet get there with enough juice to do the job as it was designed? The next limitation is that of *both* the rifle and shooter to being able to put the bullet in the right place.

In other words, I may have a 50 Cal cartridge that is able to crumble an elk or deer at 2K, but if my rifle does not hold the necessary accuracy or I cant shoot it and the cartridge to it's potential, that is the limitation. Which ever is least is the overall limitation. Sooo... if I have a cartridge that can put killing power to a deer @ 1200 yds, and I have demostrated to myself that I and my rifle can consistantly put the bullet in say, a 14" disk under "X" conditions, then I can kill the deer at 1200 yds, where an elk might be a lot tougher to kill with that particular cartridge.

Does that make sense?
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