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Old January 26, 2023, 09:11 PM   #26
reloader28
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Last edited by reloader28; January 27, 2023 at 11:54 AM.
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Old January 26, 2023, 09:46 PM   #27
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hmm i am thinking out loud here. a 300 blackout and a 6.8 spec are basically lower velocity smaller cartridges of 277 and 308 diameter?
....if the reduced loads in a full size case mimic those velocities why wouldnt a guy just use those same bullets? like the 125 noslers from the blackout and the 110 barnes from the 6.8 ....just saying...bobn
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Old January 27, 2023, 10:42 AM   #28
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@bobn,

In the context of this discussion, they are concerned the standard bullets may not expand well at the reduced velocities.
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Old January 27, 2023, 01:01 PM   #29
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For the 308 ... Lee makes 8 different bullet moulds , ranging in weight from a lightweight of 113 grains to a heavyweight 230 grains .
Cast from a alloy of 8.5 to 9 bhn (50-50 mix of wheel weights and lead which is rather soft) they can be driven easily to 1200 fps and will mushroom nicely . The 170 gr. FP when air cooled makes for a nice hunting bullet and mushroms impressively ... vel was about 1600 fps .
Hollow point mould will give even more dramatic expansion .
Powder coated 1/40 Tin -Lead cast bullets would be another soft bullet to try ...
1000 fps should get you a nicely flattened mushroomed bullet .
When dealing with low velocity expanding bullets you want Soft ...
stay away from any saying Hard Cast ... you want a bhn below 10 ...
think how muzzle loaders and black powder rifles work ...low velocities and soft projectiles .
Gary

Last edited by gwpercle; January 27, 2023 at 01:16 PM.
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Old January 28, 2023, 02:10 AM   #30
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Quote:
think how muzzle loaders and black powder rifles work ...low velocities and soft projectiles .
and big bores so even if the lead doesn't expand its still a mighty "thwop!"
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