JFrank
Member
Humm
Oh well. Move on I suppose
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Base to Ogive Consistency: my setup or my Nosler Ballistic Tips?
- Thread starter Jgjgjg
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Oh well. Move on I suppose
Well, some (Many) bullets shoot great with a long jump, think Sierra Match Kings, others don't, although .040 off won't get you in trouble and may shoot great.
For hunting loads I seat to fit the mag because I want function above all else. In Benchrest most of us seated lightly into the lands with very light neck tension. For my 6 Dasher I am between .010 and .015 off the lands, moderate neck tension, fits the mag, shoots great.
That said, people too often chase the lands when it isn't needed and may even be counter productive.
For hunting loads I seat to fit the mag because I want function above all else. In Benchrest most of us seated lightly into the lands with very light neck tension. For my 6 Dasher I am between .010 and .015 off the lands, moderate neck tension, fits the mag, shoots great.
That said, people too often chase the lands when it isn't needed and may even be counter productive.
pert near
Member
Here is Berger's recommendations in a nut shell. This works for non-VLD bullets also. The whole article is here.
Load 24 rounds at the following COAL if you are a hunter (pulling a bullet out of the case with your rifling while in the field can be a hunt ending event which must be avoided) or a competition shooter who worries about pulling a bullet during a match:
1. .010 off the lands (jump) 6 rounds
2. .050 off the lands (jump) 6 rounds
3. .090 off the lands (jump) 6 rounds
4. .130 off the lands (jump) 6 rounds
Shoot 2 (separate) 3 shot groups in fair conditions to see how they group. The remarkable reality of this test is that one of these 4 COALs will outperform the other three by a considerable margin. Once you know which one of these 4 COAL shoots best then you can tweak the COAL +/- .002 or .005. Taking the time to set this test up will pay off when you find that your rifle is capable of shooting the VLD bullets very well (even at 100 yards).
Regards,
Eric Stecker
Master Bulletsmith
1. .010 off the lands (jump) 6 rounds
2. .050 off the lands (jump) 6 rounds
3. .090 off the lands (jump) 6 rounds
4. .130 off the lands (jump) 6 rounds
Shoot 2 (separate) 3 shot groups in fair conditions to see how they group. The remarkable reality of this test is that one of these 4 COALs will outperform the other three by a considerable margin. Once you know which one of these 4 COAL shoots best then you can tweak the COAL +/- .002 or .005. Taking the time to set this test up will pay off when you find that your rifle is capable of shooting the VLD bullets very well (even at 100 yards).
Regards,
Eric Stecker
Master Bulletsmith
JFrank
Member
I always see threads that after a couple pages the responses have very little to do with the original post .
Any idea how that happens?
And then there is Mr. Guffey.......
J
Any idea how that happens?
And then there is Mr. Guffey.......
J
I do not have two standards, if I posted something that rude the response would be removed; and I wonder how is it possible for other members get away with it. Are there that many members on this forum that enjoy that kind of behavior?
F. Guffey
JFrank
Member
You interpreted that as Rude ???
Comonman..,..
No one is being or trying to be rude to you especially me, I am currently one of your supporters and more to that I have adopted several of your methods and thank you for those.
I am not going get into an argument with you on the inter web as before. It serves no purpose whatsoever.
Good Day Sir
J
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I think you misunderstand him. He has been posting here for quite a while and all his posts come across as rude. He is just letting you know. Most people just don't understand him.
And yes, he knows a lot about firearms.
murf
JFrank
Member
Oh I understand ol Guffey just fine, I also know a lot about building new homes but that doesn’t entitle me to anything.
He made a mistake and mis read the op and won’t admit it.
I’m out!
He made a mistake and mis read the op and won’t admit it.
I’m out!
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Poper
Member
please let us know how things work out.
I used Sinclair gauges to determine bullet base-ogive and bolt face depth after taking an average of multiple measurements. I added the two together and began backing away in .004" steps from the lands. I shot groups starting furthest back, then toward the lands. Obviously the rifle likes one jump setting vastly better than all others.
JFrank
Member
If I may ask,What do the shots at -c- 9:00 11:00 & 1:00 represent are they Sighters and at what distance is this test shot at.
All shot at 100 yards. Those 3 were from another rifle and of no concern for this discussion, other than they add some confusion without context.It is interesting to note that my son's 7-08 Rem 700 has a stupid-long throat so seating to the lands turns it into a single-shot. I ran a similar bullet jump ladder with it starting at max O.A.L. and had almost the same type of results as the above '06. It's just nuts that controlling your cartridge ogive measurement can have that profound an effect on grouping!
When I work up loads for a new rifle/bullet/powder, I do a powder ladder up to published max with a conservative bullet jump while keeping an eye on signs of overpressure. I also do a bullet jump ladder as above. 40-50 rounds total gives me a tremendous level of knowledge about the entire combination.
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