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W.T.F.
Discussion regarding the reloading of ammunition and tuning of loads for accuracy
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Elvis
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PostPosted: Mon Jan 26, 2015 2:10 am    Post subject: W.T.F. Reply with quote

Just went onto Hodgdon website to look up load data for 4831 and 170grn load for .270win
ok so nobody lists 170 anymore Sad had a look at 160 data
thought to self "man that velocity is slow"
had a look at test rifle wtf
15" barrel Scratch Scratch Scratch

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slimjim
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PostPosted: Mon Jan 26, 2015 5:20 am    Post subject: Re: W.T.F. Reply with quote

Yep, Hodgdon change the interface to their load data and fewer loads show up than before. Elvis, you may have to buy you one of their hardback manuals.

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MacD
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PostPosted: Mon Jan 26, 2015 8:11 am    Post subject: Re: W.T.F. Reply with quote

My Lee book, which is several years old also doesn't have a 170 load but has one for 180 with H4831. H4831SC is AR2213SC. ADI also has no 170 load but one for 180. Using the 180 load information you can work up a safe load for the 170 grain bullet.

If you can find anyone with an older Speer manual you should find data for their 170. I am a member at loaddata and found one load there but it was pretty hot. It was from handloaders magazine and used the Speer RN bullet which has apparently long been discontinued.

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Aloysius
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PostPosted: Mon Jan 26, 2015 8:50 am    Post subject: Re: W.T.F. Reply with quote

Mac, I have the Speer number 10, which I call rather old, but for the 270 Win only data for 100, 130 and 150 grs
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Azar
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PostPosted: Mon Jan 26, 2015 9:25 am    Post subject: Re: W.T.F. Reply with quote

Elvis,

It surprised me to hear they listed a 15" barrel. I just checked and I see load data for a 160g and a 180g. And the barrel length I see is 24".

Maybe they list weird data for those of you in the Southern Hemisphere? You know, because your standing upside down on the bottom half of the world. Maybe they feed you upside down data to compensate... Very Happy
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Azar
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PostPosted: Mon Jan 26, 2015 9:31 am    Post subject: Re: W.T.F. Reply with quote

Case: Winchester
Twist: 1:10"
Primer: Winchester LR, Large Rifle
Barrel Length: 24"
Trim Length: 2.530"

160 GR. NOS PART
Hodgdon H4831 .277" 3.340" 50.0 2,510 43,000 CUP 54.0 2,673 50,500 CUP

180 GR. BAR JRN
Hodgdon H4831 .277" 3.300" 47.0 2,358 46,000 CUP 50.5 2,501 51,100 CUP

Here is what they feed those of us standing right side-up on the world...
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MacD
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PostPosted: Mon Jan 26, 2015 9:33 am    Post subject: Re: W.T.F. Reply with quote

The references I found were to Speer manuals #8 & #9.

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Bushmaster
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PostPosted: Mon Jan 26, 2015 9:52 am    Post subject: Re: W.T.F. Reply with quote

170 grain bullet for the .270? Never heard of such a thing. I have a manual from 1982. No listing for a 170 gr. I do have a listing for 170 grain for .30-30 only. There are listings for 168 grain, but not for the .270.

I would like to ask you to mike the bullet to insure you have a bullet of .277" in diameter

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Last edited by Bushmaster on Mon Jan 26, 2015 11:48 am; edited 3 times in total
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Aloysius
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PostPosted: Mon Jan 26, 2015 10:54 am    Post subject: Re: W.T.F. Reply with quote

MacD wrote:
The references I found were to Speer manuals #8 & #9.

so yours were olderderderder Smile


and I have to agree with Bushy to be careful. When you want 170 grs, you better take something in 7 mm or in .308, but don't put these bullets in a .270 Win...
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Gil Martin
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PostPosted: Mon Jan 26, 2015 1:08 pm    Post subject: Seer Manual #6 From 1964 Reply with quote

This classic manual lists the following bullets for the .270: 100 gr., 130 gr., 150 gr., and 170 gr. The loads for the 170 gr. bullets and 4831 powder are as follows:

Starting Load 52 grs. Muzzle Vel. 2,646 200 Yd. Vel. 2,098

Mid Load 54 grs. Muzzle Vel. 2,719 200 Yd. Vel. 2,156

Max. Load 56 grs. Muzzle vel. 2,803 200 Yd. Vel. 2,222

Hope this helps. All the best...
Gil

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MacD
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PostPosted: Mon Jan 26, 2015 2:10 pm    Post subject: Re: W.T.F. Reply with quote

Aloysius wrote:
MacD wrote:
The references I found were to Speer manuals #8 & #9.

so yours were olderderderder Smile


and I have to agree with Bushy to be careful. When you want 170 grs, you better take something in 7 mm or in .308, but don't put these bullets in a .270 Win...

I should have also mentioned that the loads I saw were with powder available at that time (1970's?) and based on the technology for measuring pressure and the techniques used. That is why working with a current heavier bullet weight is recommended. It reflects the most recent burn rate for the powder and pressure measurements. There must be a good reason that nobody makes a 170 grain bullet specifically for the Win270. I am betting it is an accuracy issue and the bullet is unstable due to its length, centre of mass and the rifle's twist. However that is just my guess.

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Last edited by MacD on Mon Jan 26, 2015 2:39 pm; edited 2 times in total
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Azar
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PostPosted: Mon Jan 26, 2015 2:12 pm    Post subject: Re: W.T.F. Reply with quote

If you split the difference between the 160 and 180 grain loads I posted it would look like 52g of H4831 would be a reasonable max charge.

56g Looks wee bit warm to me...
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Ominivision1
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PostPosted: Mon Jan 26, 2015 3:47 pm    Post subject: Re: W.T.F. Reply with quote

Here is a scan from my #6 Speer manual.



speer manual for reloading ammunition --- number 6 --- 1964_170.jpg
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speer manual for reloading ammunition --- number 6 --- 1964_170.jpg


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1895ss
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PostPosted: Mon Jan 26, 2015 5:17 pm    Post subject: Re: W.T.F. Reply with quote

Lyman 46th Edition Printed in June 1982
270 Winchester
Firearm: Universal Receiver
Barrel Length: 26"

170gr Jacketed RN
H-4831
Sugg start 49.0 gr. vel 2398 fps 36,000 C.U.P.
Max 56.0 gr. vel 2801 fps 53,600 C.U.P
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Bushmaster
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PostPosted: Mon Jan 26, 2015 8:55 pm    Post subject: Re: W.T.F. Reply with quote

I would ask that when we are discussing 4831 that we specify which one. Hogdon H4831 or IMR 4831. They are NOT the same powder....

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