First Time Out.....OMG!

[Muleskinner30189]

My first time out with the new 6 BR, from what i have read, 30g Varget and 80g Berger fb was one of the best loads, but ended up with over an inch pattern at 100 yards. Then i tried a string of 10 107g SMK bullets, seated at the lans with 29.5g Varget and ended up with an .800 spread. The 107's were smaller than the 80's in my 1-8 twist, but considering there is a man with my same rifle who shot a .2100 @ 100 yards at the last match, i have a lot of work to do.

Any Suggestions? Anyone?

Thanks

Muleskinner

 

[expiper]

practice -practice-practice- ...keep shootin and adjusting the powder charge and seating depth etc.....your on your way....Roger

 

[Forum Boss]

"At the lands" is NO-MANS-LAND which will leave some of your bullets a little bit in the lands and others a little out (unless the bullets are extremely consistent base to ogive). That's a recipe for split groups...

Try the 107s .010" in the lands (you should see rifling marks), or .020" out of the lands, and report back.

I'd also buy a box of Bergers or Scenar 105s. Those bullets have always shot better in my gun than the 107gr SMKs.


Re the 80s -- Yes they are very accurate, but our accuracy load in 30.0+ grains of Vihtavuori N135 NOT VARGET. Varget is tool slow for these bullets, IMHO. Try N135, H322, or H4895.

 

[Nodak7mm]

"At the lands" is NO-MANS-LAND which will leave some of your bullets a little bit in the lands and others a little out (unless the bullets are extremely consistent base to ogive). That's a recipe for split groups...

That there is Words of Wisdom!!!

 

[potatoe]

+2, No at the lands, but I'd still try a different bullet ;D

 

[1holeaddict]

CCi 450, Lapua brass,80 grain berger FB, and 30.4 varget shoots in the same hole all day long with my Savage LRPV "FACTORY"

 

[Muleskinner30189]

CCi 450, Lapua brass,80 grain berger FB, and 30.4 varget shoots in the same hole all day long with my Savage LRPV "FACTORY"

I was using the same bullet, primer, brass, with 30.g Varget in my Savage mod 12. Where do you seat your bullet?

I will also try the +10 jam and - 20 out idea as well and see what happends, seems like i have a lot to learn about this but i guess thats what its all about. I will also try and find some N135 and give that a shot.

Muleskinner

 

[260Ravage]

my factory benchrest model 12 will not shoot with varget. It loves 31+ grains of re15 with the 80 gr bergers, br4 primer. I have a different savage that hates Re15, but loves varget,,,,,,,go figure! I have found the sweet spots a little on the warm side,but safe.

 

[tome]

the 80 gr Berger load on this site for 6mmbr was a winner in my savage LRPV 1-8 tw from the 1st shot..in fact i won 1 of 5 rounds in a club shoot last mo..2nd best for 2..and out of it for 2 ( me ). one piece of advice would be to do only one change at a time..don't easter egg it..you'll never know what worked on didn't.try the 80gr Berger varget load using exactly what is called for.seat one diameter deep ( .243 ) and try 4 or 5 5 round groups..if your savage is anything like mine they should shoot..

 

[dansig]

I have a 13.5 twist on my 6mm BR, for me the VihtaVuori N-135 works best, 33.5 gr and the 68 gr FB Berger match bullet, if I shoot groups larger than .300 then I'm doing something wrong... The load and the gun keeps below .300 and usually close to .200 for 5 shot groups.

For any 6mm BR the groups should never be bigger than .400 at 100m, if they are then something is not like it should be.. Load, bullet, shooter..?

 

[4xforfun]

Since no one out there is going to say it, I will....I have never, EVER, found a load that was best in my gun(s) without doing extensive load testing. Sometimes the groups got better, and sometimes the groups got HUGELY BETTER, but they always get better. Trying loads that you "read about" is not load development!! It is a shortcut that most likely will never work.

You want a shortcut.....do a round robbin ladder test. That will get you into the ball park. I shoot one on the way up and one on the way down..one min apart to keep the temps stable, and go from there.

I can't find the article that has been floating around on 6br website about the ladder test. if someone finds it, post it on this thread....it seems relevant.

Thanks,
Tod

Found it!!!

http://www.accurateshooter.com/technical-articles/long-range-load-development/

 

[eww1350]

Want a real bughole shooter get an 8 twist 22BR and try some 82grain Bergers...I have a friend that has one built on a BAT action and it will shot with the PPC...it is scary accurate...!

 

[Muleskinner30189]

I wanna thank all you guys for being sio helpful, I never even considered the Ogive would vary from bullet to bullet. I am gonna shoot my first match this Saturday i think, and because i cant make it to the club to try out some of your ideas i will be going in blind. being competitive isnt what i will be after this Saturday, just wanna see how the match is run and what i should do and when.

Q: How much ammo should i load for a typical 100 / 200 yard Benchrest match?

Thanks Muleskinner

 

[DennisH]

"At the lands" is NO-MANS-LAND which will leave some of your bullets a little bit in the lands and others a little out (unless the bullets are extremely consistent base to ogive). That's a recipe for split groups...

I have never heard the above statement! I usually "kiss" the lands with my 107's, but from reading the above, I should go into the lands a little, is .002, .005, or is .010 the best.

Or I may back off .005 and see what happens.

Serious question, looking for your thoughts.

Dennis

 

[queen_stick]

"At the lands" is NO-MANS-LAND which will leave some of your bullets a little bit in the lands and others a little out (unless the bullets are extremely consistent base to ogive). That's a recipe for split groups...

I have never heard the above statement! I usually "kiss" the lands with my 107's, but from reading the above, I should go into the lands a little, is .002, .005, or is .010 the best.

Or I may back off .005 and see what happens.

Serious question, looking for your thoughts.

Dennis

the 107 SMK's can vary quite a bit in ogive length. The recommendation of a .010 jam will keep all of the *unsorted* bullets in the lands. If you try to do a .002 jam, you will still have bullets with a jump (because the ogive length is inconsistent).

.010 jam or .010+ jump are good starting points.

If you sort your bullets by ogive length, then you can really start tuning with seating depth down to .002 jam or .003 jump (as examples). If you don't want to sort, then I'd stay well away from the lands (jump), or well into the lands (jam). Otherwise you'll get random pressure changes. For example, you are jumping .002", then you chamber a round with a longer ogive that is now .003 jam... pressure will increase, and it might end up as a flier at the target!