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Posted: 8/10/2020 10:35:51 PM EDT
[#1]
Yes, unless you are interested in slugging your barrel and testing them in the throat of your rifle to ensure proper feeding, I would not purchase a lot of these to start out with.
If you were going to try them, I would start with a max of 100, sometimes 2 thousands over bore diameter is good for accuracy. Those of us that cast our own have worked out many of these issues with our cast bullets and usually end up sizing ours appropriately. |
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Posted: 8/11/2020 12:19:00 AM EDT
[#2]
I size my home cast powder coated bullets to .310 for 300 blk.
All depends if they will chamber in you firearm.  You could always get a Lee sizing die and size them to .309. Lee doesn't sell a .310 die, I made mine from a .309 die. |
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Posted: 8/11/2020 12:46:03 AM EDT
[#3]
I would be interested in those. (Link?)
I run .310 as well but these will easily resize to .310 with a Lee die. Make your own or custom order. I think Dyflash made his from a .309 die. I custom ordered mine. Same result but if you want it fast then go the Dryflash route. ETA: Well, I guess I should have reloaded the page before posting my comment. 
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Posted: 8/11/2020 7:56:23 AM EDT
[#4]
Quote HistoryQuoted: I size my home cast powder coated bullets to .310 for 300 blk. All depends if they will chamber in you firearm. https://i.imgur.com/WHUwrLBl.jpg You could always get a Lee sizing die and size them to .309. Lee doesn't sell a .310 die, I made mine from a .309 die. I'm assuming you just wrapped a dowel with 600+ grit sandpaper and chucked it in a drill? |
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Posted: 8/11/2020 8:51:00 AM EDT
[#5]
Quote HistoryQuoted: I'm assuming you just wrapped a dowel with 600+ grit sandpaper and chucked it in a drill? Here is a video on opening up a lee bullet sizing die. https://youtu.be/IEa2jeV-BKs |
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Posted: 8/11/2020 1:38:31 PM EDT
[#6]
Quote HistoryQuoted: I'm assuming you just wrapped a dowel with 600+ grit sandpaper and chucked it in a drill?  Yes |
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