More 6PPC Questions?

[HTSmith]

1. My club has a LabRadar and during the week when I shoot, I clock most every round fired. So far I can't see that velocity ES is related to group size. Matter of fact my first group ever in the zero's had the worst ES of the 9 loads I tested last week. Is this of any concern?
2. We only have a 100 yard range. How does a 100 yard load generally hold up at 200?
3. I have very little powder. I'm looking to buy the first 8 pounder of either N133, LT32, or H322 I can find. Does that sound right?
4. Finally--I've found a good seating depth for the Bart 68's. When "tuning" for conditions, does this consist of adjusting powder charge or do you change seating depth too?

Thanks for all the help from this board. I wish I'd gotten one of these things years ago.

 

[LaMan]

Get your rifle tuned for 100 and then worry about the flags at 200. Look up the results of recent matches and I believe you will see 133 is still the predominant powder, though it can be fickle when it's on it's hard to beat. Second choice would be LT. My opinion is if you feel good about that seating depth with your current bullet just vary your powder charges to alter your tune.
I can't answer your question about ES, never shot over a chrono with my PPC's, the target tells you what you need to know.

 

[INShooter]

I know the LR shooters follow different procedures but in SR BR ES does not count as much as group size and consistency.

 

[PatMiles]

My LabRadar gives me good info, but it's not the be all, end all.
What's on the paper is the final arbiter.

 

[Bill Norris]

Definitely pay attention to what the target says. Some of the tightest groups I've shot @ 100 yds. when chronoed had high E S # s.

 

[JPTX]

My LabRadar gives me good info, but it's not the be all, end all.
What's on the paper is the final arbiter.

I understand that what's on the paper is what matters, but I think the question for many of us, would be, have you found that the LabRadar provides a correlation to what's on paper? Is it actually beneficial?

 

[BoydAllen]

Not for this situation, unless you are tracking velocity through changing ambient temperatures to get a clue about how to maintain constant velocity by making charge weight changes. Generally this can be handled by finding best tune in a variety of conditions and keeping good records. As a general rule, trying to treat short range as if it were long range will lead you astray. Pick the best shooter you have available to watch closely and ask questions of, and copy what he does in all details. When you shoot as well as he does, then improvise, based on your own experimental results.

 

[JEFFPPC]

The brain waves your putting into interpreting the chrono would be put to far better use learning the flag waving. Trust your gun, learn the flags, learn good bench manners and you have a chance to be a consistent and good short range shooter.

 

[Dan Hall]

Your on the right track. If your rifle is a custom gun/action use 29.1 grains of Vit N133. This load is above max in any reloading manual and that is why I mention the custom gun/ action issue. The gun needs to be able to handle max pressure. Soft Seat the bullets(Bart’s 68 grain flat base Ultra’s} so that the bolt seats the bullet in the case so that the bullet is just touching the rifling. Measure this C.O.L."to use later. Do a ladder load later trying different amounts of powder to make sure you’ve found the right powder charge for your rifle.. this method has allowed me to find the right load for several 6PPC’s.

good shooting ~

 

[HTSmith]

I sure appreciate all the advice. I think I'm going to put the LabRadar away.