.243 AI what neck?

[rhino]

After reading the articles I Decided to go with a .243 AI instead of a 243 WSSM.

Now what should I order for a chamber and neek? Plan on firing 115 Dtac's.

I do want to turn necks. I am willing and I know it helps.

RHINOUT!

 

[chuckw2]

Rhino....
You are reading my mind buddy... What twist rate and what groove bbl,4 or 5..) will be best? Sounds like an exciting project. I have a Broughton 8 twist sitting in my closet. Do you think something a little faster than 8, would spin the 115's a little better?

Call Dave Kiff Monday about the reamer...


Chuck

 

[rhino]

four groove Pac-nor 1-7.5 twist is the barrel. According to R. Whitley he said in order to make sure you can stabilize the heavy match bullets a 1-7.5 is adviseable.

1-8 may or may not work.

RHINOUT!

 

[chuckw2]

Rhino,
I am having problems with the 115's in an 8 twist. The barrel that I am using is a high round count Pac-Nor, that will still shoot 107's lights out if it is real clean. I have two new 8 twist barrels, such is life. Ya think the 4 grove, 7.75 twist Pac-Nor will shoot the 105's and 107's as well as or better than an eight twist?

I am going to shoot the old 8 twist in one more match, then my new MBR stock should be here from Sharp Shooters Supply, I am going to put the new Pac-Nor bbl and stock on the same day.
I am going to break the bbl in and do load testing with the 115's to start. I sure hope the fly well in the new 8 twist., my old barrel has over 2200 .243 rounds down it) It is toast.

What about the 6.5 x 47.. necked to 6mm...
Chuck

 

[rhino]

I don't have any experience with 6mm projectiles. I am going with what I have read and what Mr. Whitly has told me when I questioned him about his .243 rig.

The problem is some 1-8 twists are not true 1-8, could be 1-8.3 or something similar.

A long tube 30 inch 1-8 twist in a .243 or .243 AI may stabilize the 115's pushed 3000 fps and over.

However why take the chance? Most people agree for the 115's the 1-7.5 twist is the way to go.

6.5x47 necked down should be good, again go with the 1-7.5 twist. I am sure you could sell the barrel to recover the costs and then buy another barrel.

I want to be able to scream the 115's, so the large capacity and slow powders are the route I am going.

RHINOUT!

 

[Wild_Bill]

After reading the articles I Decided to go with a .243 AI instead of a 243 WSSM.

Now what should I order for a chamber and neek? Plan on firing 115 Dtac's.

I do want to turn necks. I am willing and I know it helps.

RHINOUT!

And now to answer your question what size to turn the necks to. I have a reamer that is designed for no turn Lapua 243 brass in a 243AI it has a .276 neck if i was you i would have the reamer speced to .270 and turn the necks to .268 it will give you pleaty of cleen up and a good finish but talk to David Kiff at pacific he probably has a reamer speced that will be suitable without having to reinvent one just call him and explane exactly what you want to acchive and he will help you out.
Cheers Bill
Australia