What velocity you expecting?
And what do you estimate the BC on those 600 grainers to be?
And what do you estimate the BC on those 600 grainers to be?
41xc 37xc 33xc and 30xc
- Thread starter gnbruce
- Start date
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TxDerek
Member
Do you have educated/ hopeful projections to what you're hoping to be around mv wise with the 600's in the 46?
TXAoudadKlr
Well-Known Member
46XC would be like a high pressure 450 Rigby, that would stomp a Buffalo for sure! Post a pic of a loaded round if you don't mind!
TxDerek
Member
What are your thoughts on a 30xc for a competition cartridge? They would have to run 5 to 10 round strings in a 6 minute window, but then there is at least an hour in between strings. I've heard they can be a pain to keep in tune, but with the added component of a barrel tuner, would that make them a little easier to keep in tune?
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MagnumManiac
Well-Known Member
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- Feb 25, 2008
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Bravo 4,
Nothing I put in it is slower than 3300fps.
Haven't shot any true ELR bullets as such, but I run a 327gr solid turned brass bullet with relief grooves. BC is .790 G1.
Haven't calculated the G7 BC, I've actually forgotten how to do it on Ballistic AE...doh.
Have used other bullets, but when hitting steel at 1600mtr (1 mile) I use the above.
Those Lasers aren't available here.
Another interesting facet of my cartridge development is that I necked up 416 Rigby brass to 458 with no other changes 8 years before Rigby announced theirs. Have also done a 30 and attempted a 27, the brass didn't like the pressures and the velocity was disappointing to say the least. I don't know how Kirby Allen keeps his brass intact?!
Cheers.
Nothing I put in it is slower than 3300fps.
Haven't shot any true ELR bullets as such, but I run a 327gr solid turned brass bullet with relief grooves. BC is .790 G1.
Haven't calculated the G7 BC, I've actually forgotten how to do it on Ballistic AE...doh.
Have used other bullets, but when hitting steel at 1600mtr (1 mile) I use the above.
Those Lasers aren't available here.
Another interesting facet of my cartridge development is that I necked up 416 Rigby brass to 458 with no other changes 8 years before Rigby announced theirs. Have also done a 30 and attempted a 27, the brass didn't like the pressures and the velocity was disappointing to say the least. I don't know how Kirby Allen keeps his brass intact?!
Cheers.
use a match bullet 210grain or so and tune down the velocity to reliable
2800 g7 .500
TxDerek
Member
When you say "tune down", what range are you thinking?
Multiply the G1 BC by .512 and it'll give a good start for the G7.
where you get the best grouping
TxDerek
Member
Perfect! Which reamer did you go with for the 30xc?
