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Bushmaster
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Location: Ava, Missouri
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 Posted: Mon Jan 26, 2015 8:56 pm Post subject: Re: W.T.F. |
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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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Grant
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Elvis
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Joined: Jul 27, 2008
Posts: 9253
Location: south island New Zealand
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| Posted: Mon Jan 26, 2015 9:48 pm Post subject: Re: Seer Manual #6 From 1964 |
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| Gil Martin wrote: |
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 |
sure does, thanks Bud
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gelandangan
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Location: Sydney Australia
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| Posted: Mon Jan 26, 2015 9:52 pm Post subject: Re: W.T.F. |
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Which specific 170 grain projectile and what OAL are you using?
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Elvis
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| Posted: Mon Jan 26, 2015 9:53 pm Post subject: Re: W.T.F. |
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yes it is .270 calibre they very old projectiles.
Ive loaded 52grn AR2213sc/Hodgdon H4831 and loads are fine and group around the 1" mark
found why 15" barrel
top of page has 2 tabs and I was looking in pistol tab...doah
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Elvis
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Location: south island New Zealand
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| Posted: Mon Jan 26, 2015 9:59 pm Post subject: Re: W.T.F. |
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speer fence post (long straight sided round nose) seated to max magazine length
when seating projectiles I cant have die set as normal I have to back it out of press as cant unscrew top enough to get projectile started.
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gelandangan
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| Posted: Mon Jan 26, 2015 10:21 pm Post subject: Re: W.T.F. |
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LOL, that does it.. I have no data at all for Speer 0.277 at 170 grains ..
Elvis could you measure the projectile length for me?
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Elvis
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Location: south island New Zealand
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| Posted: Mon Jan 26, 2015 10:58 pm Post subject: Re: W.T.F. |
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30mm
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gelandangan
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| Posted: Tue Jan 27, 2015 1:08 am Post subject: Re: W.T.F. |
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Just sent you a PM.
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BigBlue
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Posts: 1108
Location: Lehigh Township, Pennsylvania
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| Posted: Tue Jan 27, 2015 4:36 pm Post subject: Re: W.T.F. |
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I just checked Speer's website and they no longer list a 170gr. bullet. That may be the reason the powder companies stopped providing load data for it. My 48th edition of Lymans also does not list 170gr. bullet for the .270.
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Ominivision1
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| Posted: Tue Jan 27, 2015 4:39 pm Post subject: Re: W.T.F. |
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Elvis
I just ran some data thru LFAD and it came up with this for the speer 170gr round-nose bullet using IMR 4831.
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Elvis
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| Posted: Tue Jan 27, 2015 11:06 pm Post subject: Re: W.T.F. |
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thanks guys that has me sorted now.
you fellas are the best 
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chambered221
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I think your still confused........ 170gr bullets belong in 30cals !!! 
