Post by picklehead on May 20, 2019 19:29:53 GMT -5
Ive shot piles of their bullets and found that others are doing the same as I did when starting out. They claimed at one time to push the bullets to the lands to get great accuracy. This is far from the truth and .000 to .002 isn't the cats meow in most cases. I found that .020 to .090 off the lands is best. No reason or rhyme and not hard to figure out a semi sweet spot. Load 12 rounds with the same everything and put three of each at .003 , .015 , .030 and .070 off the lands. This will get you there fast and if you done your part on case prep / shooting,, one of these groups is going to be decent. Now it is time to tweak the best group on charge and play .005 at a time. No need to get crazy over .001 or .002 at a time and just wasting components, until you get a decent group going on from the starting test. If .050 produces a 1 inch group where none others did,, its time to chase .002 and .2 grains of charge,, higher or lower from your starting point.
You will have a rifle that might hate the Bergers but doubt it. I try to use SMK or Nosler Accubond data when starting with a Berger bullet. SMK seems to get me very close for a starting point and from day one on the Berger's,,,, I didn't go straight to touching or .001 off the lands. Believe me and I have done it and seen nothing good about it. Im sure some rifles love a .001 jump but not any that ive played with.
This seems to be a game that people love to play and makes no sense to me in a way. Shove a bullet into the lands, kiss the lands and it may shoot like hell,, for that charge weight, brass and primer. If it does, id venture to say that they powder charge was low on the chart. Do it again with one more grains of powder and pressures might go through the roof. I stay away from this but hey,, if your sweet spot is .001 to .004 off the lands and safe,, go with it and nothing wrong with that. Every rifle is different but finding the smooth pressure curve for consistent jump is fairly easy to find.
I will have some 140 Berger Hybrid bullets this week for the 6.5 creed and they will be interesting. Only thing I can see is they have a differ length of bearing surface from base to ogive and maybe a few other changes in demission's.
You will have a rifle that might hate the Bergers but doubt it. I try to use SMK or Nosler Accubond data when starting with a Berger bullet. SMK seems to get me very close for a starting point and from day one on the Berger's,,,, I didn't go straight to touching or .001 off the lands. Believe me and I have done it and seen nothing good about it. Im sure some rifles love a .001 jump but not any that ive played with.
This seems to be a game that people love to play and makes no sense to me in a way. Shove a bullet into the lands, kiss the lands and it may shoot like hell,, for that charge weight, brass and primer. If it does, id venture to say that they powder charge was low on the chart. Do it again with one more grains of powder and pressures might go through the roof. I stay away from this but hey,, if your sweet spot is .001 to .004 off the lands and safe,, go with it and nothing wrong with that. Every rifle is different but finding the smooth pressure curve for consistent jump is fairly easy to find.
I will have some 140 Berger Hybrid bullets this week for the 6.5 creed and they will be interesting. Only thing I can see is they have a differ length of bearing surface from base to ogive and maybe a few other changes in demission's.