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.600 Overkill Cup nose Boreriders . Max velocity and Terminal performance design Login/Join
 
Robgunbuilder
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I just wrote some code for a .600 overkill borerider. Weight should be about 900 grs in brass. Only has a .620 bearing surface of .5 inches so pressures should be markedly reduced. The rest of the bullet (1.4 inches) just rides on the lands of the barrel. With these I think I'll be able to significantly exceed the 2400fps limit at 65KPSI with 900 gr bullets. I designed them with a cup nose too as that will be interesting on game. I plan to make a bunch next week in both brass and partially annealed copper. May need a crimping groove to feed thru the mag though. Should be interesting.-Rob


Never underestimate the power of stupid people in large numbers to do incredibly stupid things- AH (1941)- Harry Reid (aka Smeagle) 2012
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Posts: 6314 | Location: Las Vegas,NV | Registered: 10 January 2001Reply With Quote
boom stick
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You mean 20 Gauge solids right Wink

I like bore riders...

I would think bore riders would be more inherently accurate not that it needs it.

pics when u got em'

Is a long range high BC 600 bullet in the works? Big Grin
Just in case you need to shoot an impala @ 300 yards BOOM


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Posts: 27615 | Location: Where tech companies are trying to control you and brainwash you. | Registered: 29 April 2005Reply With Quote
Macifej
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Lets see 'em....

Cool
 
Posts: 13301 | Location: On the Couch with West Coast Cool | Registered: 20 June 2007Reply With Quote
CCMDoc
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quote:
Originally posted by Robgunbuilder:
I just wrote some code for a .600 overkill borerider. Weight should be about 900 grs in brass. Only has a .620 bearing surface of .5 inches so pressures should be markedly reduced. The rest of the bullet (1.4 inches) just rides on the lands of the barrel. With these I think I'll be able to significantly exceed the 2400fps limit at 65KPSI with 900 gr bullets. I designed them with a cup nose too as that will be interesting on game. I plan to make a bunch next week in both brass and partially annealed copper. May need a crimping groove to feed thru the mag though. Should be interesting.-Rob


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NRA Lifer; DSC Lifer; SCI member; DRSS; AR member since November 9 2003

Don't Save the best for last, the smile for later or the "Thanks" for tomorow
 
Posts: 3465 | Location: In the Shadow of Griffin&Howe | Registered: 24 November 2007Reply With Quote
CCMDoc
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quote:
Originally posted by Robgunbuilder:
I just wrote some code for a .600 overkill borerider. Weight should be about 900 grs in brass. Only has a .620 bearing surface of .5 inches so pressures should be markedly reduced. The rest of the bullet (1.4 inches) just rides on the lands of the barrel. With these I think I'll be able to significantly exceed the 2400fps limit at 65KPSI with 900 gr bullets. I designed them with a cup nose too as that will be interesting on game. I plan to make a bunch next week in both brass and partially annealed copper. May need a crimping groove to feed thru the mag though. Should be interesting.-Rob


How did your baby's new shoes work out? .620 (20 gauge for you, Boom Stick) inquiring minds want to know!


NRA Lifer; DSC Lifer; SCI member; DRSS; AR member since November 9 2003

Don't Save the best for last, the smile for later or the "Thanks" for tomorow
 
Posts: 3465 | Location: In the Shadow of Griffin&Howe | Registered: 24 November 2007Reply With Quote
600 Overkill
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Originally posted by Macifej:
Lets see 'em....

Cool


You're killing us Rob jumping WE GOTTA SEE EM beer beer The 750gr cavitators or these, or both??? Roll Eyes
 
Posts: 467 | Location: Driftless Area of Wisconsin | Registered: 03 November 2007Reply With Quote
SAFARIKID
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Waiting "impatiently"! Smiler


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Posts: 6572 | Location: NEW ORLEANS / CAJUN COUNTRY!!! | Registered: 05 September 2005Reply With Quote
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