Krieger 6mm br norma

[Theant]

My problem is the precision in my new rifle. The action rem 700 barrel krieger 1/8" in a McMillan stock. Made by a good gunsmith. the smallest groups is 20mm at 100m. I´v tested a lot of bullets and powders. What kind of precision is accepable in a gun like this. My friend has a rifle in 6mmbr norma also when we tested both of them his rifles groups is only half of mine with every tested ammo. Should i complain to the gunsmith? What shell i do?

 

[chino1969]

A 6mm BR, properly put together, should shoot a one hole group at 100 meters. Mine is a Rem. 40X, sleeved bolt, trued action, bedded in a HS Precision fiberglass stock with a Hart 1:14" light varmint barrel. I've shot 5 shot groups at 200 meters that measure <.375. To answer you original question; yes, there is something wrong with that level of accuracy and you need to start exploring all the knowns and unknowns.
Chino69

 

[Cheechako]

theant

The very first thing you should test is yourself. Have your buddy shoot some groups with your rifle and you shoot some groups with his. If the results are the same as before then you need to start looking for answers in the rifle and/or load.

Ray

 

[chino1969]

Ray brings up a good point and it's one of the easiest places to start. I don't know what your experience level as a shooter is so why don't you give us a little more information about this rifle.
1) Was the action trued, lugs lapped?
2) What kind of trigger is on the rifle, what is the setting?
3) What kind of scope is on the rifle, were the rings lapped?
4) Is this chamber a tight neck?
5) Are you using Lapua brass?
6) Are you messing with the primer hole?
7) Are you shooting from a good rest with good sandbags?
8) Do you shoot enough to be confident in your skills?
9) Are you an experienced handloader?

There are many things to explore but the above are the logical questions or areas to begin.
Chino69

 

[Theant]

1 I dont know these word in english pleas explane.
2 Remington nicely fixed to 600 gram.
3 Leupould 6,5-20, Yes
4 No
5 yes
6 no
7 Yes
8 yes and my buddy tested it with same results.
9 My skills are enough for my buddys rifle.
Theant.

 

[Theant]

The gunsmith has offer me an HS-Precision barrel instead with 1/13"twist. What do you think of that twist and barrel?

 

[rstreich]

There are a lot of things I'd try before I traded a Krieger barrel for an HS Precision. For example, have you tried a different scope? If you're not doing anything to the flash holes, did you inspect them to make sure that there aren't any obstructions in them,a common problem of late with Lapua brass)? Have you double-checked all the screws on your scope bases? Have you checked the bedding to make sure that it was bedded properly?

It's possible to get a bad barrel. It's just far more likely that the problem is elsewhere.

robert

p.s. In chino's first question, he was asking if the gunsmith went over the action and made everything fit properly. This includes things like removing metal from the face of the receiver, bolt lugs, etc. to make sure that everything is perfectly flat.

 

[Theant]

Ok I will test a different scope. I don't have any problem with the ammo in the other 6mmbr I use. The gunsmith has blueprinted the action as he call it and the bedding looks perfectly done.
THE ANT

 

[BountyHunter]

Primers, which ones?

have you tried switching to the CCI 450?

BH

 

[Theant]

CCI BR-4 is the primer I use. What can be wrong when the rifle is very sensitive with diff rent bullets but not with the loads? My guess is the barrel whats yours?
THE ANT

 

[Obtunded]

Krieger makes their 6mm barrels with a land to land measurement of .236 or .237

Your barrel may be tighter,or looser) and to that end may simply require that your try a greater selection of bullets. For a tighter fit, try the Lapua Scenars or 105 Amax. These seem to work better in a tighter barrel, otherwise try the 107 Sierra Match Kings and Berger 105 VLD's

I personally swear that seating depth is the most important factor in getting a 6BR to tighten up and every 6BR barrel I've ever used like the bullets jammed 15 - 20 thou, although others have widely differing experiences.

Before I ever gave up on Krieger, I would fully explore as many other variables as I could.

 

[Theant]

Done that already. The Scenar and the sierra is the best bullets i tested and the five shot groups are 17mm at the best, aggregate 22mm approximately
The Ant

 

[Theant]

Hi!
My gunsmith recommends Bartlein 6mm-Br 1/12", but there is now one in Sweden i know with a bartlein barrel. Is it top of the line? The bullet is Lapuas 90grains Scenar. My chose is 1/8" or 1/10". What yours opinion of twist rates?

 

[treeman]

if the scope is good i would take it to the gunsmith and ask him to recheck his work possibly he over looked something. if he is worth his salt he will accomodate you. if not i'd find a different gunsmith. ___treeman

 

[tightneck]

Hi!
My gunsmith recommends Bartlein 6mm-Br 1/12", but there is now one in Sweden i know with a bartlein barrel. Is it top of the line? The bullet is Lapuas 90grains Scenar. My chose is 1/8" or 1/10". What yours opinion of twist rates?

Bartlien's are top of the line barrels. The 12 twist won't work with the 90gr bullets, you will need at least a 10 twist. I would opt for the 8 twist to allow you to shoot the 105gr bullets if you want.