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  #1  
Old 03-12-2011, 01:34 PM
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Question In search of Lead Cast 6.5mm (.264)


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I am looking for a bullet mold for a 6.5mm (.264) caliber bullet with or without gas check for a bullet ranging somewhere between 100gr and 120gr. I have looked through the sources I have found but haven't seen anything less than 140gr molds. My application is for a 10" pistol barrel chambered for 6.5 Grendel. I would like to try some cast bullets so that I can be assured of good expansion at 100yds. Right now my velocities, (2000 fps) are right at the minimum expressed by most jacketed bullet companies for expected expansion and I am wanting something I can be confident will open up and expand on deer out to 100 yds. If anybody can point me in the right direction I would appreciate it.
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Old 03-13-2011, 08:09 AM
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You might check with lyman. One of my older manuals lists 3 bullets that may fit your requrements. One is a gc at 101 grains #266305, the other a pb at 119 grains #266324, also a gc at 127 grains #266455. Hope this helps a bit. Regards Johnjay
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Old 03-13-2011, 08:45 PM
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Thanks for the info. I'll check those out and see what I can find.
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Old 03-19-2011, 06:34 PM
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VA,

In addition to the three mentioned above, RCBS has a 120 gr. special order mould. I have one of them, but I've never tried it yet.... I also have the 266455. I purchased both of them on ebay...
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Old 03-19-2011, 10:43 PM
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Thanks for the info. I have started checking Ebay and Gunbroker for moulds. I did find a supplier online for some 120gr bullets. He is making me up 100 to try out. These are from obsolete Lyman molds, so I guess the only way to get one is from an auction or just by luck.
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Old 03-23-2011, 09:56 AM
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Don't discount the heavy-for-bbl-length 140s until you try them....

7mmTCU in 10"bbl prefers 140 - 160gr cast bullets....

.300Whisper in 10"bbl prefers 200s to 170s....

6.5x54MS w/ 18" bbl prefers 160s to 140s....

6.5x55 w/ 23" bbl likes 160s....


Soft-cast bullets w/gas checks @2000fps will open-up well @100yds - there's a reason 6.5 140s are much easier to find. FWIW....
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Old 03-23-2011, 04:10 PM
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Crazydave, thanks for the thoughts. However, I don't know if you are familiar with the 6.5 Grendel cartridge or not, but 140gr bullets do not work well with it. Chambers are short and so is the case. You lose too much powder capacity when using 140gr bullets with this cartridge.
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Old 03-31-2011, 07:28 AM
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Out of curiosity, what's a typical barrel twist in the Grendel? If it's longer than the other 6.5's, that could be an issue for the long bullets, too.

If you get stuck, you can do a design-your-own at Mountain Molds. That way you could get both the gas check and weight you want. I think the idea of running a relatively soft bullet with a gas check for 2 kps makes sense. Running in the middle of your weight range in QuickLOAD, it looks like a 110 grain GC design with long bore riding nose just under an inch long over about 90% filll of IMR 4198 would get to the velocity you want without gross inefficiency.
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Old 03-31-2011, 07:35 PM
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1 to 8 or 1 to 9 is typical barrel twist.
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Old 04-01-2011, 12:21 PM
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So it's optimized for the long MatchKing shapes, then. Shorter flat base bullets. like a 110 grain bullet an inch long at 2000 fps, would only need about an 11"-12" twist. The faster twist will tend to add to wobble, but it should be too bad. I'll be interested to hear how this turns out?
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