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+--- Thread: Grendel at 600 and 1,000 yards (/showthread.php?tid=3097)
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Grendel at 600 and 1,000 yards - RangerRick - 06-18-2012
Drifter Wrote:RR- I don't shoot competitively, haven't shot past 600 yards, and have no experience with annealing.
That being said, I do recognize the significance of consistent neck tension and its influence on accuracy. Reducing Grendel neck diameter 0.010"+ consistently in one step is a lot to ask. My approach is to use a standard full-length resizing die (Forster), followed by a Redding Competition Neck Bushing Die in 6mm PPC. This method would allow you to leave your current sizing die as is, and use the neck die for the finishing touch. I've used both Wilson and Redding bushings (Redding is undersized more so than Wilson), and prefer the Wilson since they seem to have a tad of flare at the bottom, avoiding the potential of a ring near the base of the neck. Also, I often see accuracy enhancements using a very light crimp with the Lee FCD.
Again, great post to open this thread. I might have to follow in your footsteps one of these days and visit the Butner facility.
I guess the idea is to make sure the pressure in the case is always the same before the bullet starts moving to improve consistency?
You'll definitely have to shoot at Butner if you get a chance. Don't worry about not being a competition shooter. They love to have folks out there and there are 40 lanes on the range so crowding is not an issue.
If you decide to go, give me a shout and I'll try to link up with you there.
RR
Grendel at 600 and 1,000 yards - RangerRick - 06-18-2012
Drifter Wrote:RR- I don't shoot competitively, haven't shot past 600 yards, and have no experience with annealing.
That being said, I do recognize the significance of consistent neck tension and its influence on accuracy. Reducing Grendel neck diameter 0.010"+ consistently in one step is a lot to ask. My approach is to use a standard full-length resizing die (Forster), followed by a Redding Competition Neck Bushing Die in 6mm PPC. This method would allow you to leave your current sizing die as is, and use the neck die for the finishing touch. I've used both Wilson and Redding bushings (Redding is undersized more so than Wilson), and prefer the Wilson since they seem to have a tad of flare at the bottom, avoiding the potential of a ring near the base of the neck. Also, I often see accuracy enhancements using a very light crimp with the Lee FCD.
Again, great post to open this thread. I might have to follow in your footsteps one of these days and visit the Butner facility.
I guess the idea is to make sure the pressure in the case is always the same before the bullet starts moving to improve consistency?
You'll definitely have to shoot at Butner if you get a chance. Don't worry about not being a competition shooter. They love to have folks out there and there are 40 lanes on the range so crowding is not an issue.
If you decide to go, give me a shout and I'll try to link up with you there.
RR
Grendel at 600 and 1,000 yards - Drifter - 06-18-2012
RangerRick Wrote:I guess the idea is to make sure the pressure in the case is always the same before the bullet starts moving to improve consistency?
You'll definitely have to shoot at Butner if you get a chance. Don't worry about not being a competition shooter. They love to have folks out there and there are 40 lanes on the range so crowding is not an issue.
If you decide to go, give me a shout and I'll try to link up with you there.
RR
Neck tension is somewhat complex, with many variables coming into play. Check this link for info:
http://www.accurateshooter.com/technical-articles/reloading/neck-tension-not-just-bushing-size/
And thanks; I'll definitely keep Butner on my list. If there's anything in particular coming up on their schedule that seems appropriate for a Grendel-shooting outsider, please keep me in mind and maybe we can get together there. I have a feeling that I would really enjoy it. (I'm guessing that it's a 2-hour drive for me to get there.)
Grendel at 600 and 1,000 yards - Von Gruff - 06-19-2012
That is a very interesting read Drifter and makes a thoughtfull difference in what can seem an ordinary load procedure. Thanks for the post. great stuff here as always.
Von Gruff.
Grendel at 600 and 1,000 yards - jwilson1985 - 06-19-2012
glad to know im not the only one shooting beyond 600-1000 yards with 108s
Grendel at 600 and 1,000 yards - jwilson1985 - 06-20-2012
RangerRick Wrote:Interesting. I wonder if altitude could play a part? I wouldn't think so, but maybe pushing a lower mass of air out of the barrel affects things.the 108 scenars i use have had the meplet trimmed and repointed so i will start by saying that they are not your out of the box 108s. The 108s for me group a bit tighter out to 650is compared to 123 but out of my rifle i will say that the groups are very tight anyway.Out to 1000 i havent measured groups but have still hit steel.past 1000 i try to stay with 123s
How do the 108 Scenars perform in the wind at 1,000? I would think the heavier bullets would do better.
RR
Grendel at 600 and 1,000 yards - ccole3 - 06-20-2012
How far off was Hornadys table? I was thinkin there numbers were with a 24" barrel.