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Old January 3, 2020, 08:57 PM   #1
Stats Shooter
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220 gr plated 10mm starting load

I got a great deal on several thousand 220 grain 10mm/.40 plated round nose bullets. Only trouble is, there is no published load data that I can find for it.

I load a lot of 200 grain 10mm loads with my mild loads around 1,150 fps from a 5" barrel and my wild loads around 1,275 from a 5" barrel (this is a very hot load and only used in new brass with fully supported chamber).

I use hodgdon longshot for the hot loads and HS-6 for my milder loads.

Again, however, I find no published data for the 220. My initial thought is to take the 200 grain longshot starting load, reduce by 10%, and do a full workup in new brass. I might also try AA#9 for this since it is a bit slower than long shot (and do the same -10% from the 200 gr starting load and workup).

I will also be shooting these in my cmmg 10mm 8" banshee AR. Any experience with this weight of bullet would help.

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Old January 3, 2020, 11:03 PM   #2
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Tons of 10mm data here. Listings for 215 and 220 gn bullets.

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Old January 10, 2020, 01:40 AM   #3
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Great link!
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Old January 10, 2020, 04:33 AM   #4
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Great link. Now I have more information for the different bullet weights that are not in my reloading books.
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