Pressure limit on 30BR
- Thread starter tiny68
- Start date
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eww1350
Guest
Try the software "Load from a Disk" it has a free download that will let you test all of the 30 caliber bullets..It has a complete selection of Berger bullets to chose from...The 30MS cartridge is an exact duplicate of the 30BR..You can use it to find out the internal ballistics you need answers to...
powder choices
I got it downloaded. Looks good, but missing the H4198. That the powder I have to play with. That and Benchmark. I have IMR4895, but no H4895.
What would have the closest burn rate to H4198?
tiny
I got it downloaded. Looks good, but missing the H4198. That the powder I have to play with. That and Benchmark. I have IMR4895, but no H4895.
What would have the closest burn rate to H4198?
tiny
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AVanGorder
Guest
Does it have N130
no.
LARRY FEUSSE
New member
Danger!!!
Do not use that n133 data for h4198!! You'll blow yourself up. I think that H 4198 is too hot for that weight bullet in a 30 BR, unless you are starting real low. N 133 is not the same as H4198 no mater what those comparison charts say. Be careful, Larry.
Do not use that n133 data for h4198!! You'll blow yourself up. I think that H 4198 is too hot for that weight bullet in a 30 BR, unless you are starting real low. N 133 is not the same as H4198 no mater what those comparison charts say. Be careful, Larry.
Warning Understood!!!
Thanks for the reminder Larry. I will start with a 80-85% load density and work up slowly. I know how to read primer signs for pressure. And I rarely push it to the upper limit where up BR guys live. I got a can of H4198 for the 125 Bergers. I will try it with the 135s.
I may give Varget a chance with the 150 SMK. I am open to other powder suggestions with the 150s. No one replied to my previous post for load data on the 135s or 150s.
I have IMR4350, IMR4895, RE-15, RE-19, RE-22, IMR4007SSC, IMR4831, and Varget on hand. Everything else is too fast. I have no local sources to buy powder so I want to try what I got first.
Tiny
Thanks for the reminder Larry. I will start with a 80-85% load density and work up slowly. I know how to read primer signs for pressure. And I rarely push it to the upper limit where up BR guys live. I got a can of H4198 for the 125 Bergers. I will try it with the 135s.
I may give Varget a chance with the 150 SMK. I am open to other powder suggestions with the 150s. No one replied to my previous post for load data on the 135s or 150s.
I have IMR4350, IMR4895, RE-15, RE-19, RE-22, IMR4007SSC, IMR4831, and Varget on hand. Everything else is too fast. I have no local sources to buy powder so I want to try what I got first.Tiny
LARRY FEUSSE
New member
Didn't you say you had some benchmark? 'That might be real good.
Tiny
If the program shows RL7, you could work up from there. It is much faster than 133. For the heavier 150 gr., I would even consider IMR 4320. This powder shot great in a lot of rifles of mine. My pet load for the 150MK in my 30-30 was 38.2gr of 4320 for 2800fps. You would need to try around 35gr, because the 30-30 has a little more capacity. This powder meters well, and looks almost identical to N133, but with a burn rate close to N135. This 30-30 load won the championship for 200yd unlimited bag gun both years I shot it. It made thumbnail size holes for 5 shots at 200 yards.
Michael
If the program shows RL7, you could work up from there. It is much faster than 133. For the heavier 150 gr., I would even consider IMR 4320. This powder shot great in a lot of rifles of mine. My pet load for the 150MK in my 30-30 was 38.2gr of 4320 for 2800fps. You would need to try around 35gr, because the 30-30 has a little more capacity. This powder meters well, and looks almost identical to N133, but with a burn rate close to N135. This 30-30 load won the championship for 200yd unlimited bag gun both years I shot it. It made thumbnail size holes for 5 shots at 200 yards.
Michael
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Yes I do. I forgot about that one on the list. The program actual list Benchmark. I will try it as well.
tiny
CPU used in BR???
Ok. I know you guys like to run wide open and your custom actions can with stand the pressure. I have been running simulations H4198 with a 110 Berger. Either you guys run way over the listed 50,000 CUP max or the program (Load from a Disk) isn't accurate at all. So.... how high can you push the pressure in a 6BR Lapua brass convert to a 30BR before you start losing primers? I just want to know if the program is even in the ball park.
tiny
Ok. I know you guys like to run wide open and your custom actions can with stand the pressure. I have been running simulations H4198 with a 110 Berger. Either you guys run way over the listed 50,000 CUP max or the program (Load from a Disk) isn't accurate at all. So.... how high can you push the pressure in a 6BR Lapua brass convert to a 30BR before you start losing primers? I just want to know if the program is even in the ball park.
tiny
I would guess that almost all Benchrest shooters using a 30BR in competition run pressures exceeding 50K by quite a bit. 60K to 65K is probably closer to the norm, and some get up in the 70's.
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AVanGorder
Guest
Julia won a 200 yard Score match earlier this winter with a 30BR using Berger 110s that was filled to the brim with H4198. Never lost a primer, brass was fired so many times, I have no idea just how many. But, they are still fine with over two years of Heavy use.
Disclaimer - I do not suggest or recommend that anyone ever load above the manufacturer's recommendation.
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mojo2138
Guest
30 BR Pressure
Last Summer, at the IBS Score WVa State Championship,I shot next to Allie Euber. At first, I was wanting to duck at his every firing. He was using so much 4198 that the powder would have pushed the bullet back out except for the fact that he used a VERY tight neck. The bullets squeaked while being seated. He had no problems and won the match. I'd never reccomend this practice, but it worked for him.
Last Summer, at the IBS Score WVa State Championship,I shot next to Allie Euber. At first, I was wanting to duck at his every firing. He was using so much 4198 that the powder would have pushed the bullet back out except for the fact that he used a VERY tight neck. The bullets squeaked while being seated. He had no problems and won the match. I'd never reccomend this practice, but it worked for him.
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AVanGorder
Guest
I have a 30BR on a Savage - Trust me, don't put as much in it as you do in your BR rifles.
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AVanGorder
Guest
I've watched Allie load. I think he fills the case to 102% capacity.