Have you shot a 30 BR ?
- Thread starter Ice-Pick
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bulldog284
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30br is made for 100 200 300 benchrest for score never heard of anyone shooting a 1000.
I'm making one up as we speak, though not for the same reasons, the .30BR. is the darling of benchrest shooters that are shooting for score and maybe not group size. It is also the most successful chambering for cast bullet benchrest competition(CBA), which is where my interest lies. Jacketed bullet benchrest shooters are using it with light(125gr.) bullets and 1-17" twists, cast bullet shooters are using bullets up to 210grs. with 1-10 or 1-12" twists. It does not have the kind of velocity necessary for anywhere near 1000yds., however.
Nope...
Look at the BC of the 2 bullets. Not even close.
Score shooting is what the 30 BR is designed to shine at.
There is some controversy that when a load is found it does not loose its tune. It maybe okay for score shooting but for group it appears to react just like a 6PPC and require some load tweaking.
You want a 30BR for kicking buttt score shooting....
CBY
Look at the BC of the 2 bullets. Not even close.
Score shooting is what the 30 BR is designed to shine at.
There is some controversy that when a load is found it does not loose its tune. It maybe okay for score shooting but for group it appears to react just like a 6PPC and require some load tweaking.
You want a 30BR for kicking buttt score shooting....
CBY
I've got a 6 PPC now, I love it but don't use it much. I'm always curious though about going 1 step up from my 6 BR to something that really shines at long range with out going to something like a 6.5-284. I considered the 6 XC.
M.
M.
Mike, the 30BR is definitely a short range cartridge. The 125 bullets lose their steam pretty quick. Lots of drag, poor BC.
Some of the best form factor bullets that aren't too punishing are in the heavy 6.5 and 7mm range. If you can get a 115 (6mm) Berger/DTAC to fly straight, it will give up very little to a 6.5
243, 6XC, 6X47 Lapua, or even a 6 Dasher will get them going fast enough to be a serious 1000M contender.
In my mind, the 6BR is the ultimate do everything cartridge though...
Some of the best form factor bullets that aren't too punishing are in the heavy 6.5 and 7mm range. If you can get a 115 (6mm) Berger/DTAC to fly straight, it will give up very little to a 6.5
243, 6XC, 6X47 Lapua, or even a 6 Dasher will get them going fast enough to be a serious 1000M contender.
In my mind, the 6BR is the ultimate do everything cartridge though...
Cool, thanks Ian
Robs gonna have my new barrell done this week .
Pulling the barrell off of the PPC and doing another 31" 1-8 6BR.
Gonna keep the PPC barrell incase Gord wants to shoot eggs again at 300 yds.
Sold the Rem. BR to a guy from Gunnutz in New brunswick
Mike.
Robs gonna have my new barrell done this week .
Pulling the barrell off of the PPC and doing another 31" 1-8 6BR.
Gonna keep the PPC barrell incase Gord wants to shoot eggs again at 300 yds.
Sold the Rem. BR to a guy from Gunnutz in New brunswick
Mike.
I cried when I saw that for sale as I would dearly love another XR platform, but alas, we {She-who-must-be-obeyed and I} have discovered that new home warranties are not worth the paper they are written on and I am hemorrhaging all my money towards lawyers these days
From my experience with my 30 BR I have pushed it out to 700 yards. I shoot 115 grain Bergers as my Match load and I have used 125gr Speer TNTs with a slightly higher BC (.326). There wasn't much diffence between the two at this distance. The Bergers are....out to 300 yards......consistantly more accurate.
The rifle is extremely accurate so I figured, why not try it at distance. I think the limitation is the really slow twist rate and the fact that all the bullets I tried are BR bullets and all have flat bases. None are boattails, thus detracting from the better BC and the bullets capabilities.
Accuracy wise, my 30 shot as well at 700 yards as my 7 twist .223 which IS set up for long range shooting. I was very surprised at this.
I agree that this cartridge is designed for score shooting....and it works fantastic for that. But to say that it CAN'T reach out and touch.....is that based on experience with this round?? I don't argue that there are better choices for distance shooting. Maybe a 30BR with a faster twist...like a 1:12 would help push 155gr. I don't know what velocity could be attained, but I was getting 3120 with my 125s.
The rifle is extremely accurate so I figured, why not try it at distance. I think the limitation is the really slow twist rate and the fact that all the bullets I tried are BR bullets and all have flat bases. None are boattails, thus detracting from the better BC and the bullets capabilities.
Accuracy wise, my 30 shot as well at 700 yards as my 7 twist .223 which IS set up for long range shooting. I was very surprised at this.
I agree that this cartridge is designed for score shooting....and it works fantastic for that. But to say that it CAN'T reach out and touch.....is that based on experience with this round?? I don't argue that there are better choices for distance shooting. Maybe a 30BR with a faster twist...like a 1:12 would help push 155gr. I don't know what velocity could be attained, but I was getting 3120 with my 125s.
I've never owned a 30 BR, but if I had to make one shoot at long range, I would look at the new low drag 155 grain class bullets from Sierra (2156) and Berger (155.5 FULLBORE). With G7 BC's around .230, these bullets would only need a MV of around 2800 fps to remain supersonic to 1000 yards (in standard atmospheric conditions). If you can get 3120 fps with 125's, you can get 2800 fps with 155's with the same pressure.
They have short bearing surfaces which means maximum room for powder.
They also only require a 1:13" twist to stabilize; anyone have a 1:13" to try it with?
I don't think it would be the 'snappiest' thing on the line, but I believe it could be viable.
-Bryan
They have short bearing surfaces which means maximum room for powder.
They also only require a 1:13" twist to stabilize; anyone have a 1:13" to try it with?
I don't think it would be the 'snappiest' thing on the line, but I believe it could be viable.
-Bryan
Mike, I have been looking at 6mm myself for my next gun, after talking with Gord, I think I will settle on a .243AI instead of the 6XC, but let me know your thoughts. I have a 1:7.5 30inch 1.25 inch tube coming that I will be able to easily swap onto my existing platform to shoot the 115gn 6mm vld's
Why would one take a flat base versus boat-tail? I notice this mostly in BR shooting... Is there some inherent accuracy for short range? Or is a boat-tail just not needed? The Lyman manual (49th ed.) says it really only makes a difference when the bullet decelerates down to subsonic...
