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.270 win 140 gr partion

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/29/2010 at 23:21
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 Does anyone have  good  reciepe for loading up some 140 gr. Nosler partioner .270 win. shells? I would like to keep them at least at 3000 fps. I am going out west and Alberta for whitetail deer this year.  I like 140 gr .270 loads but nobody factory makes them in a Nosler partion bullet.  130 and 150 but not 140's.  Thanks for any input.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/30/2010 at 06:40
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Chief Sackscratch

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Looking at my Lee reloading manual they fastest I see listed it xmr-4850 @ 56gr pushing 2988fps   thats the upper end, trail and error will be the only way to figure out what your gun will do.  What length barrel do you have, it will play a factor in increasing FPS too.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/30/2010 at 07:24
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  My Nosler #4 shows 3003 fps (Ballistic Tip) w/a max load of RL19 out of a 24"bbl.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/30/2010 at 19:41
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Nosler manual #6 shows 58gr h4831sc @ 3000, 55gr RL19 @ 3003, 53gr W760 @ 3018. 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/30/2010 at 20:52
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Thanks for the input .  Will I pick up much speed going to a 130gr. partioner?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/31/2010 at 06:59
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 Probably 100 fps or so.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/31/2010 at 07:05
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Even with all this data, only your gun will tell you what it will do,  You need to reload and test with a chrony to know what it will do and what will be to much pressure.

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/31/2010 at 07:50
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 +1 !
 
  Talk about startin' a heated discussion.  Mention to some about using a chronograph to develop loads. 
 
  Seems 3100 fps w/130's is USUALLY doable.  I got a real accurate load @ an average of 3112 fps out of a 22" bbl Rem 700 and good case life.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/31/2010 at 07:52
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I usually find the bullet the gun likes best and then fine tune the powder a little.  Then again I like to try all kinds of bullets still so I find one load that shoots well and then play with others still keeping the gravy load for comparisons, and Zombies lol

Edited by SVT_Tactical - March/31/2010 at 07:53
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/31/2010 at 08:20
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 That'll work! 
 
 I'm kinda of a one bullet/load per rifle kinda guy.  Except for my .300 which I have 150gr and 180gr loads for. 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/31/2010 at 09:11
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i myself worry more about accuracy as opposed to speed, usually the hottest loads wont be the most accurate.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/31/2010 at 09:20
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  No doubt.  But it seems alot that if the accuracy is going to happen it starts showing up as you approach max.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/31/2010 at 09:24
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ive only had maybe two guns in my life that shot there most accurate groups at or near max, the rest were always a few grains below.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/31/2010 at 09:26
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now are you saying max as in starting to see pressure signs or max as in what the book recommends?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/31/2010 at 09:29
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pressure signs for me, most of my guns have shot pretty well with published max's over the years.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/31/2010 at 09:31
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I have noticed the published max in my Lee book come no where near signs for me.  i am a full grain  over and still no signs.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/31/2010 at 09:33
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noslers book is hot i will tell you that, some of those loads i couldnt even fit in my .375H&H cases.Shocked
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/31/2010 at 09:36
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  For me? Max is when my chrono starts showing signs of diminishing returns(I like to refer to it as the load becoming unstable)as far as the powder charge is concerned.  Very low velocity increases or actually a drop in velocity.  This has worked for me for YRS and has given me top notch loads w/GOOD casing life(means alot when you have to make your casings).
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/31/2010 at 14:46
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Some times a compressed load will provide the best accuracy.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/31/2010 at 15:41
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  Thunbs Up  Seems the higher % of load density the better chance of accuracy if the powders not to slow to provide the right velocity that'll produce that accuracy.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: April/11/2010 at 01:07
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Thanks for all the input
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: April/12/2010 at 22:20
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I just got through reading a post on mag primers vrs large.  Do you guys think I should use mag primers and stay just a little under max?  I have never heard that about using mag primers in cold weather.  I will be hunting Alberta in Nov.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: April/12/2010 at 22:24
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I would use regular large rifle primers.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: April/13/2010 at 05:40
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  Maybe just me,but when I know I'm going to be approaching 60gr of powder in a cartridge I'll use mag primers.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: April/21/2010 at 15:26
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I had a friend reload me some 140 gr. 270 partioners.  We are still working up but right now at 57.2gr of H4831sc  the gun shot a real nice consitent 3 shot  group.  The speed was 2890.  We are going to reload a little hotter but I was pretty happy right now. Oh we used cci large rifle primers
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