Need some advice

B

Bench 1

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I have a 6BR I have tried some differnt bullets in. Now I have only shot one 5 shot group so far and it shot them in a perfect verticle string. I am hoping to save some time,money and barrel life to correct the problem. Would it most likley be the O.A.L or do I need to try changing the powder charge? I am certain its not a shooter problem or conditions the group was shot back to back with my normal load and it was .211. The gun seems to have one certain powder N135 and charge that it loves and has always shot very well so I am thinking O.A.L. I am open for any advice some times I have a problem of turning a very small hill into a MOUNTAIN. Thanks
 
Where are the bullets, the ones that worked so well and the new ones, seated, in relation to the rifling? What bullets are you talking about?
 
The bullets I have been shooting are Berger 68's and they are sitting touching the lands. The new bullets are Barts ultra 68's and I seated them touching the lands also. I am sure they will shoot if I work with them for awhile. But I was hoping maybe somebody could tell me if it was as simple as adjusting the length.Before I started changing powder charges. What is the best way to tune a load? Would you recomend seating 10 to 15 thousands off the lands to start and working on powder charge first then finish it out with adjusting the length. Or What is the correct way start to keep round count to a minimum. I have read some about a ladder test to find the best powder charge and have tried it. But the problem I ran into is I only have a 100 yard range to test on and shots do not spread enough to be able to get good results. Thanks
 
Just one group?

Pretty sure you need to shoot a couple more before you decide there's a problem.
 
A couple of years ago Jerry Sharrett posted on finding a load. He said start with a broadly accepted powder charge ( he used 2?.?gr VV 13? as an example) and a jam. Load ten rounds. Shoot two shots. If they don't touch each other seat the remaining cartridges 0.005" deeper and shoot two more shots. If they don't touch seat the remaining rounds 0.005" deeper and fire two shots. When you get two shots to touch fire a third at the same seating depth. If it goes into the same hole you are starting to learn something about what the rifle wants and you haven't shot a lot of rounds or time to find a place to start. I thought this was just too cool in its simplicity and economy.

Greg
 
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