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Looking for advice on 6br build

Forget that the 6mmBR Rem ever existed. You want 6mm BR Norma always. The 8 or 9 twist barrels are used for the long range heavier bullets (105-107). The freebore is so long you cannot get the bullet even close to the rifling with a 65-68 gr bullet. If you are going to shoot 68 gr bullets you want zero freebore. I have 0.065" freebore 58 gr bullets are only about 0.10" in the case when they are touching the rifling. If you want to shoot small groups at 100-200 yards you want bullet weights like the 6PPC shooters use with a 13-14 twist (65-68 gr). You can walk into any good shooters supply store and buy 6mm bullets that will shoot well. It's almost impossible to buy the 110-118 gr 30 cal bullets that they use in the 30BR at 100-300 yards. 30BR has a terrible ballistic coeficient if you want to use it for varmints beyond 300 yard. The lighter bullets are what you want for short range BR and varmints. My 14 twint will stabilize up to 70 gr. 75 gr Sierra Varmint HP are all over the target. I have confidence in my rifle to shoot to 600 yards but I hardly shoot beyond 350. I can shoot 1/4" groups with the 58 GR Hornady VMax, 65 GR Hornady VMax and the 70 GR Sierra Blitz King, all super explosive on small varmints and I don't consider my self a good shooter. The challenge isn't to find better loads but for me to improve my skills.

George Kelby's shop put my Krieger barrel on my rifle. He sold me Redding 6BR Rem FL dies (yes that's Rem not Norma). They work fine. I ended up buying Redding 6BR Rem Bushing dies and a Wilson straight line seater. I screwed the decapping rod way down and use the original FL die and use it only for depriming.

For casual BR I wouldn't consider a 30 BR just because it makes a little bigger hole. The bullets cost more, it isn't any more accurate than a 6BR, isn't suitable for varmints, it's almost impossible to buy the 30 cal BR bullets. and the bullets cost more. Sierra is the only Co. I know of the makes a 110 GR 30 cal. bullet that's super explosive for varmints. It could be years before they go back in production and you won't ever find them in a store. All the stores carry 58-70 6mm bullets. No store carries 110-120 GR 30 cal. bullets.
 
ken,

I have been using 6BR's for 20 years. I have had them all 14 thru 8 tw I like the 12 tw for 80 gr and lighter. The 80gr and the 6BR are a hell of a combo, see http://www.6mmbr.com/Schronce600.html . The 8tw will shoot light bullets, lights out. If you think you want to go longer range 8 tw and 105 Berger's is the way to go.

You want to get a chamber for 6mm BR Norma, Lapua brass, just ask is the chamber for Lapua brass.

Best FL bushing dies is Harrels Pres http://harrellsprec.com/index.php/categories/reloading-dies
Seater is Wilson hand dies, with a arbor press.
Next would be Redding FL "S" bushing die set. Do not pay the money for the Redding Comp set, get the Harrel / Wilson and arbor press.

Mark Schronce
 
MarkS said:
ken,

I have been using 6BR's for 20 years. I have had them all 14 thru 8 tw I like the 12 tw for 80 gr and lighter. The 80gr and the 6BR are a hell of a combo, see http://www.6mmbr.com/Schronce600.html . The 8tw will shoot light bullets, lights out. If you think you want to go longer range 8 tw and 105 Berger's is the way to go.

You want to get a chamber for 6mm BR Norma, Lapua brass, just ask is the chamber for Lapua brass.

Best FL bushing dies is Harrels Pres http://harrellsprec.com/index.php/categories/reloading-dies
Seater is Wilson hand dies, with a arbor press.
Next would be Redding FL "S" bushing die set. Do not pay the money for the Redding Comp set, get the Harrel / Wilson and arbor press.

Mark Schronce

Just to be clear I am getting the 6MM BR Norma. The Lapua brass I ordered is the 6MM BR Norma. Seems to be a lot of confusion over the names. I'll speak to Jim at Northlander SS and make sure he has a barrel with the right chamber. I'll also check with McGowen. Rethinking the 1/12 vs 1/8 since most shooting will be 200 yds or less, max 300 yds.
Ken
 
Ken, there's little-to-no downside to using the faster twist bore. And if/when you have a chance to stretch that rifle's legs, then you'll be equipped to do so.

A .223 with a 1:7" bore will shoot extremely well with lighter bullets, e.g. 52 grain match hollowpoints by Sierra. And if you want to shoot 80 grain bullets for the 600y course of fire, you're all set. If you instead went for a 1:12" bore, then you'd be unable to shoot the heavier bullets.

We're trying to lead you to water, but you have to decide to drink. (Water, not what they drank in Jonestown...)
 
BOhio said:
Ken, there's little-to-no downside to using the faster twist bore. And if/when you have a chance to stretch that rifle's legs, then you'll be equipped to do so.

A .223 with a 1:7" bore will shoot extremely well with lighter bullets, e.g. 52 grain match hollowpoints by Sierra. And if you want to shoot 80 grain bullets for the 600y course of fire, you're all set. If you instead went for a 1:12" bore, then you'd be unable to shoot the heavier bullets.

We're trying to lead you to water, but you have to decide to drink. (Water, not what they drank in Jonestown...)

I'm drinking the water.

I'll order the 1/8 barrel tomorrow.

Thanks again for all of the info, Ken
 
http://forum.accurateshooter.com/index.php?topic=3839573.msg36372971#msg36372971


Down side to a fast twist pre fit barrel trying to shoot light bullets

You can't say we didn't try
 
Thank you all for your input. I plan on shooting heavier bullets. I assume that shooting bullets that match the twist should be accurate whether using light bullets in a 12 twist or heavy bullets in an 8 twist.
I'll see if I can find out what the free bore is for each barrel I have looked at and verify it is chambered for Lapua brass. I am fine using 1/8 with heavy bullets at 100/200 yds, assuming the accuracy is as good as lighter bullets out of a slower twist barrel.
Ken
 
I agree with Webster. If I was building a 6br for 300 and less I would be shooting a custom made flat base bullet, like the ppc shooters are using. .060 free bore is probably the longest you should use, and I'd go with zero. I can't touch the rifling in my .060 fb 6br with 55 gr nosler ballistic tips. The 6ppc shooters are not using 105 grain bullets at 100-200-300 yards.

Pick the bullet you want to use and build the rifle around it.
 
I ordered a Shilen Select Match 1/8 Varmint profile barrel, 26" today, should have it next Wednesday. I placed my order with Jim at Northland Shooter Supply and they called back 3 hours later to tell me they had shipped it.
http://northlandshooterssupply.com/

I still need dies.

Thanks for all of your help, Ken
 
For those that may be interested, here is a pretty good explanation of the concept of "over-stabilized" bullets.

http://www.nennstiel-ruprecht.de/bullfly/fig15.htm

Andy
 
Captk said:
Tsingleton said:
As some others have advised. You really ought to go with a 12 or 14 twist.
I have a mcgowen 12 twist that loves 80gr bergers
The problem with a prefit is the throat. They use a reamer designed for the twist. They figure if your buying an 8 twist you plan to shoot long heavy bullets
You won't be able to get much of a land engagement with lighter bullets.
Try Jim at Northland shooter supply he usually has a nice selection of pre fits in stock as well as barrel nut wrenches

I was able to find a 12 McGowen from McGowen listed as in stock. I have already changed a few savage barrels so have all of the tools, got them from Jim at Northlander. Jim has both Shilen and Critereon barrels with 1/8 in stock, all other twists are special order. I planned on shooting the 87gs - 107gr bullets. he ranges here on Long Island only offer 100/200 yd shooting but I might get a chance to try a range at 600 yds.
I think at this time the 1/8 makes the most sense. Before I order the barrel, what bullet weights would work well with a 1/12 twist barrel? It may be a long time before I get to a range longer then 200 yds.
Anyone have experience with the Barnes Match Burner 105 gr bullets?

I do appreciate everyone's feedback. I have found everything I need except the dies and bullets in stock.

Hi CapnK

my name's Al and I'm also on Long Island. Look for me at 200 yd. position 15 or 16 at Brookhaven. Can't miss me if I'm there...overweight old guy and probably the only one shooting a Savage 12BR. I just put a Criterion 8 twist on it (from Northland) and set up some reloads. It's still too cold so I haven't been there yet this year. The 80g Berger Varmints are fine but that's about the lightest I would go. Hope to meet you.

Al
 
Al,
I was there this morning shooting at position 2 on the 100. I had 3 Finnish Mosins. I'll look for you next trip out.
Ken
 
You don't hear that often on this site... 3 Finnish Mosins. I have a M28-30 Finnish Mosin with Civil Guard cartouches, one of my favorite off hand shooting rifles, so well balanced, always my first choice in local turkey shoot competitions.
 
old_dood said:
Captk said:
Tsingleton said:
As some others have advised. You really ought to go with a 12 or 14 twist.
I have a mcgowen 12 twist that loves 80gr bergers
The problem with a prefit is the throat. They use a reamer designed for the twist. They figure if your buying an 8 twist you plan to shoot long heavy bullets
You won't be able to get much of a land engagement with lighter bullets.
Try Jim at Northland shooter supply he usually has a nice selection of pre fits in stock as well as barrel nut wrenches

I was able to find a 12 McGowen from McGowen listed as in stock. I have already changed a few savage barrels so have all of the tools, got them from Jim at Northlander. Jim has both Shilen and Critereon barrels with 1/8 in stock, all other twists are special order. I planned on shooting the 87gs - 107gr bullets. he ranges here on Long Island only offer 100/200 yd shooting but I might get a chance to try a range at 600 yds.
I think at this time the 1/8 makes the most sense. Before I order the barrel, what bullet weights would work well with a 1/12 twist barrel? It may be a long time before I get to a range longer then 200 yds.
Anyone have experience with the Barnes Match Burner 105 gr bullets?

I do appreciate everyone's feedback. I have found everything I need except the dies and bullets in stock.

Hi CapnK

my name's Al and I'm also on Long Island. Look for me at 200 yd. position 15 or 16 at Brookhaven. Can't miss me if I'm there...overweight old guy and probably the only one shooting a Savage 12BR. I just put a Criterion 8 twist on it (from Northland) and set up some reloads. It's still too cold so I haven't been there yet this year. The 80g Berger Varmints are fine but that's about the lightest I would go. Hope to meet you.

Al

Al, I'm usually at the 200 with my Savage BR as well, I'm just a little thinner and younger. My 12 twist loves the 75gr vmax, 80gr berger and 87gr vmax.
Still to cold for me but maybe I'll see you guys out there soon.

Pete
 
are tou the one with the very high gloss stock? If so, I remember from last year.
 
If you see a tall, blonde Viking dude there shooting a camo Remington AR 15, say Hi and take him under your wing. He is a friend of mine from back home in middle TN and he is a lost ball in the tall weeds up there. His name is Paul D.
 

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