Barrel internals for 155.5 bergers

[AussieMike]

I intend to fit a Krieger barrel to my Palma style rifle to shoot Berger 155.5 .308 projectiles. I have had Kriegers in the past and cannot fault the barrel.
I am aware that the popular barrel internal dimensions are in a constant state of flux.

What internal dimensions do you consider optimal at this time?
I use this rifle in top level competition and am looking for the the utmost in accuracy.

I currently use a Krieger 1 in 12 twist, .3075 x .295 bore in 5R with 46.2 grn Varget, cci 200 primers and Lapua large primer brass for a velocity of around 3000 fps. This works quite well but has done about 2800 rounds and is quite fire crazed for about 3.5" from the throat. It is getting a bit hard to clean now, so time for a replacement.

Really interested in what you think.
Regards Mike

 

[Park ranger]

How does it shoot?

 

[AussieMike]

Last Saturday, 10 counting shots at 600 metres, sling and iron sights, 5.75 inch group.

Mike

 

[Keith Glasscock]

Mike, I don't know what is popular, but I have used that bullet in a .300/.308 Krieger to great effect in F/TR. the lot of bullets I have measure .3084 at the pressure ring.

 

[spclark]

Last Saturday, 10 counting shots at 600 metres, sling and iron sights, 5.75 inch group.

If they were all in your V-ring I'd say you AND it still shoot pretty good!

I've been shooting 155.5's for years, not in a 'tight' bore either. Cleaned 600, 800 & 900 yd targets (20 or 15 rounds) several times.

Like you I prefer sling & irons.

Multiple barrels of various brands, 1:12 or 1:13, all but one have Fullbore Team 2011 reamer chamber; I can send you a print if you'll PM me your e-mail address.