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Old March 7, 2012, 12:09 AM   #1
Jack Merrill
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Join Date: November 17, 2011
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nosler ballistic tip coal?

I am trying to work up a load for my 270, I have a couple of hudred rounds of new winchester brass, and some nolser ballistic tip 130 gr spitzer bullets. I also have quite a few hornady interlock 130 gr sp bullets. when I check them with my hornady oal gauge, the bullets nearly fall out of the cartridge. I seem to have at least .200" of freebore. The rifle has always shot quite accurately, especially with federal premium ammo. I purchased the rifle used. I am just trying to work up a load for the fun of it. I am planning on using H 4831sc with a starting charge of 55 grains. I would appreciate any help on cartridge oal. the hornady bullets have a cannelure, I am assuming that that will determine my length on them. One more question, do I need to crimp the hornady bullets? I wouldn't think so, but I am by no means an authority, obviously. Thanks for your suggestions.
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Old March 7, 2012, 12:28 AM   #2
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No need to seat to the cannuler or crimp.

If you can't get close to the rifling, you may have to go with a heavier bullet, which will be longer or just seat enough of the shank to ensure they stay in, and hope for decent accuracy.

Edit: 4831 might perform better than the short cut version. Better case fill.

Last edited by mrawesome22; March 7, 2012 at 12:36 AM.
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Old March 7, 2012, 09:16 AM   #3
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Freebore isn't necessarily bad.
Do seat deep enough to hold. If it is to the cannelure, that is what it is.
Too much OAL is bad.
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Old March 7, 2012, 11:03 AM   #4
Sure Shot Mc Gee
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do I need to crimp the hornady bullets?

Jack Merrill: Hey Jack Jack, Are you running that new brass thru a F.L. resizing die first? A light crimp. And I do mean a lightly done one. Usually is sufficient for a 270 Win. And no. (crimping) it is not always done so on the bullets cannelure ring. I suggest strongly!! say within the guidelines of what the manuals say about C.O.L. Max & Min lengths. Do not worry yourself over Free Bore in a gun barrel for the time being. As you become more and more proficient at reloading you'll come to know and how? to deal with these different specific terms. One thing I will say about reduction of Free Bore done so on purpose? You increase chamber pressure dramatically!!! and >only at times< gain some really noticeable accuracy. Your 270 is more accurate than most other rifles you'll encounter right out of the box. Enjoy your rifle. But most of all >be safe with your reloads. SSMcG

Last edited by Sure Shot Mc Gee; March 7, 2012 at 02:16 PM.
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