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April 21, 2012, 09:42 PM | #1 |
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Need load data for Hornady 180 gn SST
Im looking for the loading data for Hornadys .308 180 grain SST. I have already loaded 20 rounds using other data for similar rounds and powder, I am using IMR 4064
My current loads are: 40.1 gn with my col @ 2.899 41 gn with my col @ 2.800 |
April 21, 2012, 10:25 PM | #2 | |
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Quote:
180g SST BC=.480 COL: 2.740 IMR4064 34.0 2000fps 35.8 2100fps 37.6 2200fps 39.5 2300fps 41.3 2400fps (MAX) |
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April 21, 2012, 10:34 PM | #3 |
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thanks, looks like i might be pulling some bullets
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April 21, 2012, 10:38 PM | #4 |
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Here is the complete page.
{Moderator Edit: Image removed. Posting copyrighted materials without express permission of the copyright owner is not allowed. Please read board policy on posting copyrighted materials, here.} Last edited by Unclenick; April 22, 2012 at 11:23 AM. |
April 21, 2012, 10:52 PM | #5 |
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Don't think you need to pull any bullets, your not over max and OAL can vary to achieve the best accuracy. Wish I would have put all this together in one post but setting here tonight having a couple of cocktails and oh well..
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April 21, 2012, 11:37 PM | #6 |
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I adjusted my COL to my rifle. I made a dummy load that would self adjust as I chambered it, after 5 times and measurements I took the average. This way I was able to locate my rifling/ogive placement. The only thing Im afraid of, is with the bullet further forward, it may increase my pressure and create problems. Any thoughts?
Last edited by mohr308; April 21, 2012 at 11:53 PM. |
April 22, 2012, 12:11 AM | #7 |
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I would start about .020 off the lands. Load development is a arduous task and you might find the best load anywhere between .010 to .060 of the lands. Also the max load data in any manual is conservative. I have several favorite loads that are anywhere from .3g to .6g over max. WHAT YOU MUST DO IS KEEP A CLOSE EYE ON THE PRIMERS FOR ANY SIGN OF EXCESSIVE PRESSURE. I capitalized this because it is so import for your safety. The first sign of over pressure will be cratering of the firing pin indentation or ejector marks on your case head.
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April 22, 2012, 12:15 AM | #8 |
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i think i just might seat these current rounds to the specified depth (COL), see how they fire. I don't need any serious problems with to much pressure! My next rounds will have lower powder with the longer length. Thanks again!
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April 22, 2012, 12:39 AM | #9 |
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Anytime, glad to have been able to help you.
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