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Caster33
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Mike B.
Interesting that there is finally a request for a 6mm cast bullet design.
If my rifle had a 1:7 instead of the more popular 1:10 it would be a definite shoe in…
As it is it still might be interesting to try as the 6MM cast bullet moulds from the major manufacturers are apparently no longer being made… or carried in their mould catalogs. So in that case it might be interesting as it appears to be the only game in town currently for a 6mm cast bullet design that appears to be a streamlined design…According to Wikipedia Performance:
The .243 produces a velocity of 2,960 feet (902.21 m) per second with a 100-grain (6.6 gram) projectile from a 24-inch (610 mm) barrel. Commercially loaded .243 ammunition is available with bullet weights ranging from 55 grains (3.6 g) up to 115 grains (6.8 g). Twist rate of the barrel is the major deciding factor in which bullets to use, 1:10 being the most popular as it is sufficient to stabilize up to 100 gr bullets. However, for very low drag-profile and bullets heavier than 100 gr, a 1:8 or 1:7 (for 115 gr VLD bullets) is necessary.To aid in gathering support for this 6MM design attached are the 243 Win & possibly also for those that have the 6 MM (244 Remington), I have attached those two cartridge sketches along with the two NOE bullet sketches for the 246-106 FN GC & PB versions…
Take Care, & Be Safe…If I were going to start a Group buy Request I would tend to want to reduce the final cast bullet weight from the original 106 Gr to between 95 grains for a PB to ~ 98 grains for GC with a copper bottom… That would allow the finished cast bullet weight to stay below the twist rate of the more popular 1:10 twist upper weight limit of 100 Gr.
With that in mind I drafted up an ~ 95 to 98 Gr (as noted above) cast bullet design for the 243 & other 6 MM shooters… currently in limbo with nothing in a cast bullet weight being offered by the major commercial mould makers…
To help distinguish my drafts from the original NOE 246 design drawings I deliberately named my drawings to 243 vs 246 even though the as cast bullet diameter design is actually .246…
Take Care, & Stay Safe…
Mike B.- You must be logged in to reply to this topic.