6.5-284 revisited.

[4xforfun]

A while back I had started a thread about my new 6.5-284......Krieger 17# HV BBl screwed onto my BAT 1000 LG with a NF NSX 12-42. The thing shot like ass, and every other BBL I had for that platform shot lights out. Finally gave up on it, cleaned it up, and shipped it off to my smith with about 140 rounds on it.

He found a carbon build up...I didn't ask where it was, but his guess was that i had 300 - 400 rounds through it even though it only had 140. Makes sense, since (I thought) it was cleaning up very well and I hadn't used a brush on it since break-in. I had been running wet patches through till it was "clean" and finished with a 15 min soak with Sweets. Patches came out white as snow. He also re-crowned it.

Got it back and started to retest. It obviously didn't shoot as good as my dashers, but it seemed to shoot ok. I settled on a load of 52 H4831 SC/140 Berger Hybrid . All of my testing is done with the bullet jammed .010- .015 into the lands......it is how I always test, and then test my way out of the lands. The last test group I shot was about 2 1/2 inch 5 shot group at my 750 yard target....very acceptable!! (see picture) I then proceded to do a seating depth test...also at 750. I tested 5 shots at .010 into, .010 off, and .030 off round robbin style. I fired 4 quick shots at my gong for zero and to build some heat. I then shot at 1 min intervels...temp was 38 degrees.....1 - 2 mph 10:00 wind and overcast...ZERO mirage. Perfect conditions for testing

Gun shot like ASS....AGAIN...see picture. Tracking was very good with very little effort to get back onto the mothball.

Getting frustrated. The round robin test was 12" tall and the best verticle was 8 1/2 inches!!

 

[rsbhunter]

4xforfun, wish i had an answer for yours, or mine...I have a med weight Krieger 26" on a Savage action and i can not get any uniformity in loads.....I am seriously considering changing out bbl and caliber...I am going to try soaking bore with GM upper cyl and seeing if it may help get a carbon ring out if there is one...Real disappointing as i had big hopes on the cartridge...Good luck, maybe we can find a solution....rsbhunter

 

[4xforfun]

4xforfun, wish i had an answer for yours, or mine...I have a med weight Krieger 26" on a Savage action and i can not get any uniformity in loads.....I am seriously considering changing out bbl and caliber...I am going to try soaking bore with GM upper cyl and seeing if it may help get a carbon ring out if there is one...Real disappointing as i had big hopes on the cartridge...Good luck, maybe we can find a solution....rsbhunter

My smith cleaned mine up before he sent it back to me, and I won't let the carbon thing ever happen again. I have been shooting Dashers for years and have always been good at keeping the carbon in check. I always have a giant supply of brushes, JB, and Iosso laying around! If I had any faith in the BBL at all it would be a 6.5-47L next week!!

 

[timeout]

I had a 6SLR that wouldn't shoot. Rechambered it to a Dasher and it shot right from the get go. I would try rechambering.

 

[jr600yd]

This might sound like heresy but........
I have a 6.5/06 that drove me nuts shooting 140 Bergers. It just wouldn't group. By mistake (I think?) I loaded up some 142 SMK's. WOW!!! Now it shoots little bitty bug hole groups at 300 yds.

 

[4xforfun]

Going to try start at the beginning......again. Clean the krap out of it ( 68 rounds since I got it back from the smith, but I have cleaned it 3 times since...including using a bronze brush) and ladder test from 48 - 52.8 in .4 grain increments with H4832SC and the 140 hybrid...shot at 750. 13 shots plus 5 warmup/fouler/sighters......18 total. If I don't see anything jump out at me on target, I"M DONE. I don't see any use in switching to the 142SMK.....I tried that last fall and got nowhere. I will then have 236 rounds down range through this tube...plenty left for a 6.5-47L rechamber.

Tod

 

[Alex Wheeler]

I would never recommend rechambering a barrel that wont shoot. Sometimes they just dont shoot, you wont find anything wrong with them either. Its the steel. At this point, Id be done.

 

[4xforfun]

I would never recommend rechambering a barrel that wont shoot. Sometimes they just dont shoot, you wont find anything wrong with them either. Its the steel. At this point, Id be done.

Alex,

You are 100% correct......BUT.... I have been wanting to get into the 6.5-47L for a long time. A rechamber will at least give me an excuse to by the dies and brass.

I wonder what the odds are that Kreiger will replace the BBL if I just simply send it back to them right now and tell them that it will not shoot. I have bought a lot of Kreigers over the last 10 years...I wonder if that will carry any weight?

Thanks for the help guys,

Tod

 

[338 Mollett]

I would never recommend rechambering a barrel that wont shoot. Sometimes they just dont shoot, you wont find anything wrong with them either. Its the steel. At this point, Id be done.

Spot ON ! It takes me 5 to 6 hours to fit a barrel.Taking the pains to get everything just right only to have a bummer not a hummer.I think it's the steel also.But how do you fix it ?

 

[4xforfun]

Spot ON ! It takes me 5 to 6 hours to fit a barrel.Taking the pains to get everything just right only to have a bummer not a hummer.I think it's the steel also.But how do you fix it ?

LOLOL...I just saw somebody revived an OLD thread over at LRH.....6.5-284 and RETUMBO......
Maybe THAT is what I should try?

I am going to give Krieger a call this morning.

Tod

 

[timeout]

Alex,

You are 100% correct......BUT.... I have been wanting to get into the 6.5-47L for a long time. A rechamber will at least give me an excuse to by the dies and brass.

I wonder what the odds are that Kreiger will replace the BBL if I just simply send it back to them right now and tell them that it will not shoot. I have bought a lot of Kreigers over the last 10 years...I wonder if that will carry any weight?

Thanks for the help guys,

Tod

Not sure what Krieger will do. If they will replace the barrel, go for it. Despite the views of more experienced persons than I, I reiterate my experience with a 6SLR that would not shoot. Chambered it into a Dasher and it shot as well as I can shoot. I'm by no means a championship shooter, so take it for whatever it's worth. On a visit to Brux barrels, I was told by Ken that they replace any Brux barrel that doesn't shoot, period. He stated, as you have experienced, one can drive himself crazy trying to figure out why a particular barrel won't shoot. Both companies make fine barrels, but it's pretty hard to beat the guarantee at Brux.

 

[Capt. Oblivious]

Put n brush on a short rod, stick it in a electric drill, coat brush with iosso and stick it in the throat and let it spin at slow speed for a minute. Shortstroke the first 5 or so inches with a patch and some kroil & iosso and flush everything out with carbon cleaner. I had a barrel that suffered with carbon rings to the point where I started changing scopes and after I started doing the obove I never had a problem again until I pulled the barrel.

 

[wedgy]

The fact that it shot "very acceptable" then went back to shooting bad is strange and might be worth investigating but when do you give up and cut your losses ?

 

[barefooter56]

A while back I had started a thread about my new 6.5-284......Krieger 17# HV BBl screwed onto my BAT 1000 LG with a NF NSX 12-42. The thing shot like ass, and every other BBL I had for that platform shot lights out. Finally gave up on it, cleaned it up, and shipped it off to my smith with about 140 rounds on it.

He found a carbon build up...I didn't ask where it was, but his guess was that i had 300 - 400 rounds through it even though it only had 140. Makes sense, since (I thought) it was cleaning up very well and I hadn't used a brush on it since break-in. I had been running wet patches through till it was "clean" and finished with a 15 min soak with Sweets. Patches came out white as snow. He also re-crowned it.

Got it back and started to retest. It obviously didn't shoot as good as my dashers, but it seemed to shoot ok. I settled on a load of 52 H4831 SC/140 Berger Hybrid View attachment 1027748 View attachment 1027749 . All of my testing is done with the bullet jammed .010- .015 into the lands......it is how I always test, and then test my way out of the lands. The last test group I shot was about 2 1/2 inch 5 shot group at my 750 yard target....very acceptable!! (see picture) I then proceded to do a seating depth test...also at 750. I tested 5 shots at .010 into, .010 off, and .030 off round robbin style. I fired 4 quick shots at my gong for zero and to build some heat. I then shot at 1 min intervels...temp was 38 degrees.....1 - 2 mph 10:00 wind and overcast...ZERO mirage. Perfect conditions for testing

Gun shot like ASS....AGAIN...see picture. Tracking was very good with very little effort to get back onto the mothball.

Getting frustrated. The round robin test was 12" tall and the best verticle was 8 1/2 inches!!

4XFORFUN,
Try doing your bullet seating depth testing first. Use the lowest powder charge listed for the bullet/powder/cartridge combination you are testing . Start with the bullet .015 OFF THE LANDS. Then work back INTO the cartridge case in .005 increments. When you find a bullet seating depth accuracy node that shows promise try .002 - .003 to either side of that seating depth if you want to try to "tweak" it. Once the bullet seating depth accuracy node is found. Work the load back up slowly checking for pressure signs and accuracy until your highest velocity accuracy node is found. The HYBRID design of this bullet makes it tolerant of jump.
HYBRID BULLET DESIGN

Our Hybrid design blends the best of both worlds by incorporating two different shapes within the nose. As the bearing surface ends, a tangent ogive begins. This tangent section of the ogive results in the bullet being much less sensitive to seating depth. As you move forward along the tangent portion, the shape changes into a secant ogive (the shape used on the VLD bullets). This shape is very efficient in the wind and is why the VLD became so popular. The key to all this is not just the combining of these two shapes but also the partnership between the ballistician and the bullet maker. Berger’s Chief Ballistician, Bryan Litz uses his expertise to combine the appropriate shapes for optimum performance.

If you have any questions please contact us here or at techsupport@bergerbullets.com
Take care,

 

[rardoin]

LOLOL...I just saw somebody revived an OLD thread over at LRH.....6.5-284 and RETUMBO......
Maybe THAT is what I should try?

I am going to give Krieger a call this morning.

Tod

For what it's worth...I found RL-23 to outperform H4831sc in my 6.5 x55 BJAI; I get the same velocity with over 1gr less charge. This is with 140-142gr pills. I have a few 8lber's of H4831sc collecting dust now. I get 2950-60FPS/ 30" 8tw / 49.4gr Rl-23 / 142gr Precision Ballistic. It shoots very well with this load at 600yds in F-class. I have not yet tried it at 1000yds.

 

[nmkid]

So, after doing a regular cleaning...Is it possible to spot a carbon ring with your bare eye?

 

[rardoin]

So, after doing a regular cleaning...Is it possible to spot a carbon ring with your bare eye?

I know that I can't see one by looking from the breech end without a scope.

 

[6MMsteve]

So, after doing a regular cleaning...Is it possible to spot a carbon ring with your bare eye?

no... buy yourself a Lyman borecam and you will find out that only J&B and Isso only cleans barrels, I'm using all my cleaners for powder fouling now, when they are out I will use hoppes Kroil J&B Isso that's it

 

[4xforfun]

I said that the bbl had carbon...I never said it was a carbon ring...neither did my smith.

I LOVE IOSSO!!


I called Krieger...they want the BBL shipped to them.

GOOD PEOPLE!!!

Tod

 

[4xforfun]

The fact that it shot "very acceptable" then went back to shooting bad is strange and might be worth investigating but when do you give up and cut your losses ?

I guess I didn't catch this post earlier....the "Very acceptable" was ONE GROUP ...5 shots...at 750. It measured 2 1/2 inches with about 1 1/2 inch of verticle. I got to that point by shooting a couple of OK 2 shot groups at 100 yards. I assumed that I had FINALLY found the "sweet spot", so I went on to do a round robbin seating depth test at 750 with that combo to try and improve things a little bit more..

If I were to deem a BBL "very acceptable", it would have to shoot EVERY test group under 1/2 moa and the final results would be in the .2 MOA range for EVERY GROUP. That was my benchmark for 1000 yard comp tubes.

Thanks for the reply. Like I said, I am shipping it off to Krieger for them to look at.

Tod

PS...I forgot to add...".... .2 moa ...when I do my part"!!