30BR — Barrel, Load, Case Forming?
- Thread starter bobcat93
- Start date
O D C R BUILD
BARREL - 24 " LILJA HV 1 - 17 TW. THREADED .875-32 TPI W/EZELL TUNER
CHAMBER - -0- FREE BORE .330 TURN NECK
LOAD - LAPUA BRASS
108 GR. CLINE FB HP HBN C* 1.563 O M 2.244 COL T/L
POWDER VV-N120 33.8 GR. PRIMER CCI BR-4 .322 BU.
SEATED @ 1.573 O M 2.254 COL .010 J T/S -5-
3224 FPS 4 E S 5-SHOTS .198
RANGE - 100 - 300 YDS.
BRASS PROCESS - LUBE INSIDE NECKS - EXPAND WITH .308 MANDREL - TURN NECKS TO DESIRED THICKNESS - CHAMFER & DEBUR- RUN THRU .322 BUSHING - LOAD
NEVER ANNEAL NEW BRASS
BARREL - 24 " LILJA HV 1 - 17 TW. THREADED .875-32 TPI W/EZELL TUNER
CHAMBER - -0- FREE BORE .330 TURN NECK
LOAD - LAPUA BRASS
108 GR. CLINE FB HP HBN C* 1.563 O M 2.244 COL T/L
POWDER VV-N120 33.8 GR. PRIMER CCI BR-4 .322 BU.
SEATED @ 1.573 O M 2.254 COL .010 J T/S -5-
3224 FPS 4 E S 5-SHOTS .198
RANGE - 100 - 300 YDS.
BRASS PROCESS - LUBE INSIDE NECKS - EXPAND WITH .308 MANDREL - TURN NECKS TO DESIRED THICKNESS - CHAMFER & DEBUR- RUN THRU .322 BUSHING - LOAD
NEVER ANNEAL NEW BRASS
Attachments
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jackieschmidt
Gold $$ Contributor
1: Me
2: Krieger or Bartlien, 22.5 inches, .330;neck, 1.550 chamber length, zero Freebore, 1-18 twist.
3: 36.0 grns N-130 behind 112 grain Schmidt, Fed 205 primer.
4: 100/200 yards
5: I blow them out, neck turn to 0098, fire once more.
6: I do not anneal.
2: Krieger or Bartlien, 22.5 inches, .330;neck, 1.550 chamber length, zero Freebore, 1-18 twist.
3: 36.0 grns N-130 behind 112 grain Schmidt, Fed 205 primer.
4: 100/200 yards
5: I blow them out, neck turn to 0098, fire once more.
6: I do not anneal.
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AlNyhus
Silver $$ Contributor
My stuff:
Robinett V2 reamer, 1.520 case length, Lapua brass mechanically necked up and turned to give .003 clearance over the pressure ring, Fed 205M or CCI primers, Nyhus 114 gr bullet (.925") or 117 gr (1.00"). Neck bushing is .004 under what the neck measures with a seated bullet, seating depth is .030" past the T.P. (touch point) to start and tested from there. H4198 and LT30 powders. Barrels are Bartlien, Kreiger and PacNor twisted 1:17 and 1:18. Cases necks are stress relieved prior to firing the first time and then every 7-9 firings after that, as needed.
Pretty bread and butter, ham and egg stuff.
Good shootin'
-Al
Robinett V2 reamer, 1.520 case length, Lapua brass mechanically necked up and turned to give .003 clearance over the pressure ring, Fed 205M or CCI primers, Nyhus 114 gr bullet (.925") or 117 gr (1.00"). Neck bushing is .004 under what the neck measures with a seated bullet, seating depth is .030" past the T.P. (touch point) to start and tested from there. H4198 and LT30 powders. Barrels are Bartlien, Kreiger and PacNor twisted 1:17 and 1:18. Cases necks are stress relieved prior to firing the first time and then every 7-9 firings after that, as needed.
Pretty bread and butter, ham and egg stuff.
Good shootin'
-Al
My stuff:
Pretty bread and butter, ham and egg stuff.
Good shootin'
Good analogy. There is a classic article on this in the Bulletin.
I'm building a 7BR so that will be more like wings and beer......
Is it important to have a tight neck chamber and turn necks for the 30 br. Does expanding the brass do something different then necking down.?
Everything i have experience in has been working brass the opposite direction. Squashing the necks down in caliber.
I was thinking no neck turn for the 150 gr.
Everything i have experience in has been working brass the opposite direction. Squashing the necks down in caliber.
I was thinking no neck turn for the 150 gr.
The no-turn neck 30BR is certainly something that can be done. Expanding the brass that much does pose problems for some due to necks splitting. Lubing inside the necks really even and being easy with the press handle will pay dividends here. Probably need different twist rate to max out the accuracy with the heavier bullets but some say 1 -15 will work. I have only shot 125 gr. and lighter so I cannot say on that.
P1ZombieKiller
Silver $$ Contributor
what are you wanting to do with the 30br?
The advice and specs given by Jackie and Al are based on competition 30br's.
Hunting 30br's will be a little different.
1:17 twist of 108 - 115 bullets
1:12 for 125 to 150 bullets.
Brass forming will be the same in either format, however the neck clearance should be different.
.002"ish clearance for competition rifles
.004"ish clearance for hunting rifles.
Actions and stocks will most certainly be different
making the brass will be the same. Here is my video of making the brass.
The advice and specs given by Jackie and Al are based on competition 30br's.
Hunting 30br's will be a little different.
1:17 twist of 108 - 115 bullets
1:12 for 125 to 150 bullets.
Brass forming will be the same in either format, however the neck clearance should be different.
.002"ish clearance for competition rifles
.004"ish clearance for hunting rifles.
Actions and stocks will most certainly be different
making the brass will be the same. Here is my video of making the brass.
Mine are now with the Robinett V2 reamer. I found the 2965ish fps load of LT 30 works best in my rifles. Much above that and the bolt lift gets heavy. I like a smooth running rifle. I have never felt Brass was important as long and it fits the chamber well. I anneal often, sometimes after every firing. If and when 30 BR brass is made, I will have no turn chambers. 20 plus years with the 30 BR. It's performance hasn't changed from day 1. Lots of people run them hard but I have never felt it was worth it. Mebby Hummer barrels will beat wind flags but speed won't, from my experience.
Shooter13
Gold $$ Contributor
I shoot competition UBR score, I'm going to try a 30BRs, .080 longer than the standard 30BR. Running 37.1 grains of H4198 at 3250 FPS, I like it, shooting Randy Robinett 112s, shot some last year (no competitions) and shot really well but I think that is inherent with the 30BR. I do anneal after every firing
Shooter13
Gold $$ Contributor
Running in unlimited with the BAT DS and the Tom Meridith stock.
Kevin1990
Silver $$ Contributor
1: Me. I have a heavy SOB about 18lbs
2:Krieger #11 24in 1:17 twist barrel .332 neck
3:Shooting barts and hottinstien 112s both at 34.7gr of N130. .015 past touch.
4: 100/200 but I plan to shoot it at a local club this spring at 300 yards.
5: I anneal every 5 firings and it's not an actual anneal because I don't get near hot enough, so more like a stress relief.
My process for brass is simple. I take my brass, put it in a box, tape it up and ship it to @P1ZombieKiller, and it comes back exactly how I need it, haha.
I plan on trying my next batch and see how it goes. Got a PMA model A neck turner and a nice DeWalt drill.
2:Krieger #11 24in 1:17 twist barrel .332 neck
3:Shooting barts and hottinstien 112s both at 34.7gr of N130. .015 past touch.
4: 100/200 but I plan to shoot it at a local club this spring at 300 yards.
5: I anneal every 5 firings and it's not an actual anneal because I don't get near hot enough, so more like a stress relief.
My process for brass is simple. I take my brass, put it in a box, tape it up and ship it to @P1ZombieKiller, and it comes back exactly how I need it, haha.
I plan on trying my next batch and see how it goes. Got a PMA model A neck turner and a nice DeWalt drill.
AlNyhus
Silver $$ Contributor
If you're doing that approach, there's some areas that need some rethinking. The throat length on competition level 30BR reamers will be so short that the base of a 150 will be waaaay below the neck/shoulder junction. With a small case like the BR and a bullet like the 150's, you can't afford to give up any powder space. As to neck diameter, once you expand the necks of a 6BR case to .30, there's a lump at the bottom that will measure about .337. So, the chamber neck diameter needs to be at least that for a successful no-turn chamber that won't end up giving you funnel shaped inner case necks. See the pic below re: the lump.
Truly, for what you've semi-outlined you're wanting, my recommendation for an excellent 30BR... is the 308W.
Good shootin'
-Al
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Do you find this chambering to stay in tune well?
joshb
Gold $$ Contributor
If you're doing that approach, there's some areas that need some rethinking. The throat length on competition level 30BR reamers will be so short that the base of a 150 will be waaaay below the neck/shoulder junction. With a small case like the BR and a bullet like the 150's, you can't afford to give up any powder space. As to neck diameter, once you expand the necks of a 6BR case to .30, there's a lump at the bottom that will measure about .337. So, the chamber neck diameter needs to be at least that for a successful no-turn chamber that won't end up giving you funnel shaped inner case necks. See the pic below re: the lump.
Truly, for what you've semi-outlined you're wanting, my recommendation for an excellent 30BR... is the 308W.
Good shootin'
Valid points. Don’t forget about the old 30x47. 308 is the easy button.
The no turn 30br I just put together has a .339 neck. I left the lump as my 125s stayed out of the donut area. I thought about it, chided myself for being lazy and turned the lump off. Now my cases are .333 all the way to the shoulder.
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P1ZombieKiller
Silver $$ Contributor
Personally i think the 308win is to sloooow!.
I was shooting steel @ 300 yds a few days ago i was laughing at my buddy as he shot of a few rounds and he looked up and said whats so funny i hit the steel.
I said its not you its the cartridge..
It takes forever for that bullet to travel down range and the Ping to travel back...its so slow if i heard the shot , id have plenty of time to jump out of the way..
You would never hit me hahahaha
He was roll-n we laughed pretty good at that..he said what are you doing..i said taking my turn..he said oh no..you go down range i wanta see ya jump out of the way like in the movies
Hahaha Good fun.
The 30ARX is pretty dang cool
But that would require a bolt change as i shoot 6br already..going with a 30br for a little more thump made sense
Im not looking for top velocity @ 100 for targets, and im looking for less case capacity with more efficiency.
I would kick the 308win out of my way and go right to the 30-06. But its a waste of fuel
️ @100
Im searching for around 40grain capacity.
Maybe even a 30 Dasher would be a nice balance and easy recoil to tame down with a heavy assembly
I was shooting steel @ 300 yds a few days ago i was laughing at my buddy as he shot of a few rounds and he looked up and said whats so funny i hit the steel.
I said its not you its the cartridge..
It takes forever for that bullet to travel down range and the Ping to travel back...its so slow if i heard the shot , id have plenty of time to jump out of the way..
You would never hit me hahahaha
He was roll-n we laughed pretty good at that..he said what are you doing..i said taking my turn..he said oh no..you go down range i wanta see ya jump out of the way like in the movies
Hahaha Good fun.
The 30ARX is pretty dang cool
But that would require a bolt change as i shoot 6br already..going with a 30br for a little more thump made sense
Im not looking for top velocity @ 100 for targets, and im looking for less case capacity with more efficiency.
I would kick the 308win out of my way and go right to the 30-06. But its a waste of fuel
️ @100Im searching for around 40grain capacity.
Maybe even a 30 Dasher would be a nice balance and easy recoil to tame down with a heavy assembly
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