• This Forum is for adults 18 years of age or over. By continuing to use this Forum you are confirming that you are 18 or older. No content shall be viewed by any person under 18 in California.

What 30BR bullet for a 1-16 twist?

I'm kicking around putting together a BR on my Savage 12 action for 200 yard score shooting, and was pretty much set to go with a 7BR, 1) to be a little different, and 2) for economic reasons, but mainly to be a little different.,Hey, I like Savages...)

WELL, I was just on Sharp Shooters Supply's site, and they now list 30BR, AND 1-16 twist 30 cal Douglas XX barrels. Got the wheels turning for the 30BR again......

What would the suggested weight bullet be for 1-16? The BIB 112, or the 118?

Suggestions on barrel length? 200 yard score is pretty much all I plan on shooting with it, accuracy is more important to me than velocity.
 
The 1:16" twist will probably work very well with most of the commonly available bullet of up to 1.10" in total length. Yes, it should shoot the lighter weight custom bullets very well - and also the offerings from Hornady, Nosler, etc.
Good shootin'! R.G.
 
Thanks for the reply,from the master no less!) - bullet order coming your way in the near future....got to pay for a barrel first...

Just ordered the barrel. Went for a 22" barrel - good length?,got a little time to change yet)

Next item - dies. ,on a budget remember)

Planning on necking up Lapua 6mmBR brass. I read the 30BR articles on this site, and am wondering what are the minimum tools I'll need for loading the 30BR?

Does Redding make a die set to do just what I want to do?

Also, I assume I'll need to trim the donut. Has anyone used the Forster attachment, or is the Sinclair outside neck trimmer the way to go?
 
I use the Sinclair outside neck turner to turn the donut off the necked up brass and it works very well, Two would be better, then you could turn the donut off then use the other set to turn your necks to chamber size which will be .330 so need to turn to either .328 or .327. The Redding expander button 6mm to 30cal is the way to go to neck up your brass plus good lube and i have a Redding S series 7mmbr FL die you have to enlarge the neck slightly so that your .330 or larger neck will fit through, When expanding set the expander long ) and then you can use the 30 cal neck bushings in .326 - .325 to resize before loading. Just edited to add.
I use the Wilson mico seating die in 30BR to seat cant do much better than that.
 
For 100/200/300 Registered Score shooting, 1 22" barrel will deliver all but the last 25 or so FPS of goods. For my LV,21") and HV barrels,24") - both Morrison 1:18" twist - chambered with the same reamer, using the SAME components and "settings", the difference was a mere 27FPS average velocity advantage for the 24" tube.

Redding now lists a Type S FL Nk Bushing 30 BR die in their catalog. However, Aussie Bob provided good info - since the beginning, I have used a Redding Type "S" 7BR die with the neck port opened to .340" diameter,I used a small carbide boring-bar); you smith should be able to do this. I use L.E. Wilson seaters also. Opening a &BR die may be cheaper.

Following Joe Entrekin's case prep advice will get ya nothing but good results! ;) R.G.
 
Lots of good info!

In all the loading stuff I've read so far for the 30BR, I don't think I've seen any mention of the choice of primer.

What primer do you use, and do you find primers make much difference in 30BR loads?

I plan on starting with H4198, as its readily available locally.
 
While I cannot state that it makes a great deal of difference, I prefer CCI BR4 primers, with Winchester WSR a close second. Back when I put more faith in chronographing, the BR4s consistently delivered better "numbers" - that was a LONG time ago . . but they've never let me down. The WSR are CHEAP and very good. Good shootin'! R.G.
 
I purchased a Redding 7BR Type-s FL die, and a 6mmBR Type-S Neck die, and am ready to take them to the local machine shop to get the die opened up for the 30BR.

Do I tell him to just open the hole up to 0.340", or is more complicated than that?

Thanks!

Rob
 
R.G

Can you perhaps list me your bullets for the .30BR as well as what their lengths are?
I also have a 1:16 twist barrel coming my way and would like to order bullets from you.
I don't seem to find the lengths on your web page.

Thanks
Frans
 
R.G.
Et all
Would a 1:10 twist cause to much jacket stress on the match bullets at 3000 fps or higher??
I have a spare 1:10 twist barrel that I'm thinking of getting made into a 30 BR.

Thanks

alter
P
 
R.G

Can you perhaps list me your bullets for the .30BR as well as what their lengths are?
I also have a 1:16 twist barrel coming my way and would like to order bullets from you.
I don't seem to find the lengths on your web page.

Thanks
Frans


Frans, sorry for the tardy reply. The BIB thirty caliber bullets and the respective length/weight options,all lengths are J4 raw jacket length actual bullet length may be different): .925" = 112 Gr.,7 ogive only); 1.00" = 118;125 Gr.,either 7 or, 10 ogive); 1.080" = 127;134 Gr.,either 7 or, 10 ogive); 1.150" = 136Gr.;155.5 Gr.,TEN ogive only); 1.300" = 187 Gr.,Ten ogive only). All BIB bullets are custom [hand] made-to-order.


Ogre6br

Charter Member
Registered: 2/19/05
Posts: 167 Yesterday
R.G.
Et all
Would a 1:10 twist cause to much jacket stress on the match bullets at 3000 fps or higher??
I have a spare 1:10 twist barrel that I'm thinking of getting made into a 30 BR.

Thanks

alter
P
__________________
Doze a greenie.


This is a very good question. Empirical evidence suggests that the centrifugal forces imparted by faster twist barrels and high,er) velocities may "cause" bullet failure. I could relate a good many instances of this, but will keep it short, offering only one model as an example: People using the BIB thirty caliber 187 Gr. FB, combined with twist rates of 1:11" or SLOWER, have never reported a bullet failure - at any pressure/velocity! Conversely, as soon as someone runs the 187s through a 1:10" or faster twist, at MVs in excess of 3100 FPS, it's kiss 'em good bye - at about a 30% failure rate.
,Note: For the BIB 187, at sea level & STD. conditions, 1:12.5" is "ideal", providing Sg of 1.5. People using the 12" & slower twist rates have reported MVs of up to 3400 FPS AND excellent results.)

Henry Childs informs me that with regard to the centrifugal force issue, I am "burying my head in the sand",my wording - Henry is much kinder than THAT!), that this force is relatively small and can be dismissed as a cause of bullet failure. . . but certainly, it contributes to failures. My best guess is that, with many,most?) models, we are skating so close to the edge that the centrifugal force is very likely the proverbial final straw on the camels back! I will confess to having a very difficult time ignoring repeatable empirical evidence which supports this notion; we're seeing the same thing with the new 6mms.

But back to YOUR specific example - I doubt if you can hurt good BR quality bullets using a 1:10" twist barrel and a BR capacity chambering. Via such a fast twist, I would expect BR quality bullets to outperform the mass produced variety to a more readily observable degree than would be noticeable via, say, a 1:17 or 1:18" twist - this is because of the relative jacket[wall] run-out; the BR quality jackets will make for a smaller center-of-gravity offset, thus less radial dispersion. R.G.
 
Thanks RG.

I was planning to try some locally made 115 FBHP 8 Ogive match projectiles when my 30 Br is finished being built.

Aussie bob AFIR has got them going at over 3200 fps in his 30 BR but his twist is a proper 30 BR twist.

But it's no point if the fast twist will just spin them apart.
Should be good to try around the 3000 fps mark for 500M fly shoot.

thanks again

later
p
 
Has anybody tried the 123 grain Lapua bullet?

They have a spitzer and a FMJ cutting edge bullet. Both at 123 grains and a BC of .280
 
Sorry for the tardy reply - I have been 'gone" for about a month.
I am surprised to hear that the LAPUA bullets have relatively poor BCs as compared to custom 30 Caliber BR bullets:typically, the LAPUA BCs are quite high. At 3000 FPS, typical 112 Gr. 30Cal. BR bullet,tangent 7 caliber ogive and 0.0625" diameter meplat)will have a BC right at .32 - this has been "measured" via Oehler Mod. 43 ballistics lab. The various 125 Gr. custom bullets, depending upon nose/meplat configuration will run up to .35 BC. That said, for BR work, especially out to 300 YD., BC is highly over-rated: PRECISION is everything. Good shootin'! R.G.
 

Upgrades & Donations

This Forum's expenses are primarily paid by member contributions. You can upgrade your Forum membership in seconds. Gold and Silver members get unlimited FREE classifieds for one year. Gold members can upload custom avatars.


Click Upgrade Membership Button ABOVE to get Gold or Silver Status.

You can also donate any amount, large or small, with the button below. Include your Forum Name in the PayPal Notes field.


To DONATE by CHECK, or make a recurring donation, CLICK HERE to learn how.

Forum statistics

Threads
165,829
Messages
2,204,433
Members
79,157
Latest member
Bud1029
Back
Top