6ppc neck tension?

[skeetlee]

I am just starting testing with my new bruno 6ppc. I am going to use my .260 neck bushing to start with. Is.260 a bit to loose as a rule? should i start with a bit more tension say a .259?? Thanks Lee

 

[fdshuster]

Lee: Answers to a couple of questions are necessary: (1) What is your loaded round neck diameter? (2) What is the chamber neck diameter? Example, for my "old" .262" neck dia. 6ppc, (gone now, replaced with a .272" chamber neck), chamber neck dia = .262". Loaded round neck dia. = .260". Bushings used were .258" for newer brass and .257" when it began to get work hardened, after approx. 15 to 18 loadings.

 

[cliffy]

JUST A Thought . . . A LEE FACTORY CRIMP DIE not only straightens the bullet in the case, but allows the bullet to gain a little pressure before entering the lands and grooves. This die will permit anyone to become a more accurate shooter with no other exotic "modifications." Cliffy

 

[skeetlee]

My chamber is a .262 I should have mentioned that. My loaded rounds are measuring .260 so i guess i am not really putting any tension on the bullet. I didnt know if this was a common practice with the 6ppc. Just starting out with it. The fella at sinclairs told me this was one of the best selling bushings for the .262 chambered 6ppc?? I dont know!!!! Thanks Lee

 

[fdshuster]

Lee: Not trying to beat a dead horse, but your dimensions are a duplicate of my .262" chamber. I was outside neck turning to a .0085" neck wall thickness, loaded round neck dia. of the same .260", and the .258" bushing was my "standard". Used that combination for over 10 years, trouble-free. That's a good chambering, nothing wrong with it, I just got tired of trimming off all that nice Lapua brass, and decided to go with a thicker case neck wall ( trimming to .013" now), for the .272" chamber neck. Always seated with my Sinclair arbor press and a Wilson chamber seater die, but just bought another Forster Ultra Micrometer benchrest seater die and plan on some side-by-side comparisions to see for myself if one type seater is better than the other. My most consistantly accurate bullet in my 6ppc has always been the 68 gr. Berger #24411, with N133 powder, Federal 205, seated to touch. Have fun with your 6ppc, I certainly am.

 

[skeetlee]

I think you will find that the Forster seating dies to be of very good quality. I have a couple of them and the seat my bullets very very straight. Thanks for the info!! Lee

 

[fdshuster]

Lee: I did not mean to imply that the 6ppc Forster seater was my first one: been using them for years, have them for most all my cartridges now. My only "complaint" is the difficult to read settings, but at $25 less cost than the "green" one, they still are my first choice. Comparing other cartridges seated with the Arbor press/Wilson seaters versus the Forster's, have never found an accuracy advantage to either, will now have the opportunity to compare the 6ppc.

 

[skeetlee]

let me know what you find out. I personally feel like the forster seater is every bit as good as the wilson. I like them both equally. I havent ever did a side by side comparison for the same chambering. I have measured runout of both types of seaters and they both were spot on. Lee

 

[johara1]

If you want the best setup make a die from your chamber reamer and use your arbor press. wilson and forster seater are very generous on there dimensions.....jim

 

[GSPV]

What powder are you using. 133 will require more tension than, say, 322.

 

[LHSmith]

.260 is too big. The bushing size is indeed powder dependent......also dependent on the amount of annealing in the neck. Buy .256 thru .259 and EXPERIMENT.

A Lee factory crimp die on a 6 PPC used in a full blown comp rifle?.........that would be Heresy! :'(
Wilson In-line seaters used in conjuction with Skip's shims are the norm in point blank BR................so simple.....a caveman could use them. ;D

 

[fdshuster]

LHSMITH: You bet! In fact Lee does not even offer their factory crimp die in 6ppc. ???