270, 1:10 Twist, best bullet?

M

missloumudcat

Guest
About to trade for a 270 barrel, 1:10 twist and plan to shoot 130 VLDs or 140 accubonds from her. Is the 1:10 rate of twist appropriate for these wiegh bullets?

thanks and Go Saints!

Jim
 
To misloumudcat

You are going to need a sharper rifeling twist than 1in10. Some 270s won't even shoot regular 150g boat tails with decent accuracy out of a one in 10 twist. Exactly how sharp a twist I am not exactly sure, maybe it can be worked out with Greenhills formula. Am not even entirely certain that tight twist 270 barrels are avaliable.:D
 
Jim, according to the Berger website, a 1:10 twist is good for any of their VLD bullets from 130 to 150 grains. My 270 Winchester Model 70 shoots bullets from 90 grains to 150 with good results. Tom
 
typically, 140gr in .277 has the highest BC. .495 and such is common. Bergers run pretty high BC across the board, comparative to other brands.

Hope this helps.
 
Gonna try some Berger 140 VLDs today

Hornady 130 SST aren't very good out of my Mod 70 270WSM . Today if I don't get rained on I'll be trying the Berger 140 gr VLD using Mag pro and Re#17 powder.At the end of the day I'll be expecting some one to pin a medal on me.:eek:
 
To Worker

If any one can get those long bullets to shoot in my 1 in 10 twist 270, I would allow them to kiss me and never mind about the medal!:eek:
 
Gonna try some Berger 140 VLDs today

Well I shot those bad boys,using Magpro and Re#17 .My 10"twist barrel spins them just fine. 9grs less of Re#17 then Magpro produces a 100 fps faster then Magpro. Except for usual fliers I was able to get MOA at 100 yds.
 
130's I have had great success with the older soild base ballistic tips 1993-94 vintage for game and the Serria game king in 130 Both are very accurrate in my 270's
I'm working on a 150gn load that's promising 58 gns of A3100 is pushing a150 Nosler (.495BC) 3100fps. I'm a not happy with the sd/es yet so I need some tweaking.
I have some Bergers loaded up but I have not shot them yet. Same goes for the 150sst. I have 7 of each loaded and when I get my crony fixed I will figure out which way I'll go from there.
Murphy does the barrel shoot anything well???
The 270 has a long powder column as well as being overbore. A magnum primer works wonders for this round with H4831.
 
Is that a 270 WCF you talking about ?

RBetts said:
130's I have had great success with the older soild base ballistic tips 1993-94 vintage for game and the Serria game king in 130 Both are very accurrate in my 270's
I'm working on a 150gn load that's promising 58 gns of A3100 is pushing a150 Nosler (.495BC) 3100fps. I'm a not happy with the sd/es yet so I need some tweaking.
I have some Bergers loaded up but I have not shot them yet. Same goes for the 150sst. I have 7 of each loaded and when I get my crony fixed I will figure out which way I'll go from there.
Murphy does the barrel shoot anything well???
The 270 has a long powder column as well as being overbore. A magnum primer works wonders for this round with H4831.
Click to expand...

Your Getting 3,100 FPS with a 150 gr bullet out of a 270 WCF ? Are you sure ?It takes a max load out of my 270 WSM to get 3150.
 
RBetts said:
130's I have had great success with the older soild base ballistic tips 1993-94 vintage for game and the Serria game king in 130 Both are very accurrate in my 270's
I'm working on a 150gn load that's promising 58 gns of A3100 is pushing a150 Nosler (.495BC) 3100fps. I'm a not happy with the sd/es yet so I need some tweaking.
I have some Bergers loaded up but I have not shot them yet. Same goes for the 150sst. I have 7 of each loaded and when I get my crony fixed I will figure out which way I'll go from there.
Murphy does the barrel shoot anything well???
The 270 has a long powder column as well as being overbore. A magnum primer works wonders for this round with H4831.
Click to expand...

From accurates web site

3100 130 NOS B-TIP 51.3 2,640 57.0 2,940 57,500 3.300
3100 140 HDY SBT 52.2 2,598 56.5 2,791 57,500 3.300
3100 150 SIE SBT 52.2 2,547 56.0 2,769 52,000 3.300

From Hodgdons web site

150 GR. HDY SP Hodgdon H1000 .277" 3.285" 55.0 2689 44,900 CUP 59.0C 2831 51,000 CUP
150 GR. HDY SP IMR IMR 7828 .277" 3.285" 51.2 2536 39,800 CUP 56.8 2850 50,400 CUP
150 GR. HDY SP Winchester Supreme 780 .277" 3.285" 53.4 2673 53,500 PSI 56.8 2774 61,200 PSI
150 GR. HDY SP Hodgdon H4831 .277" 3.285" 52.0 2651 46,300 CUP 55.7 2804 51,200 CUP
150 GR. HDY SP Hodgdon Hybrid 100V .277" 3.285" 48.0 2650 53,600 PSI 52.0 2811 61,900 PSI
150 GR. HDY SP IMR IMR 4831 .277" 3.285" 46.3 2498 40,500 CUP 53.0 2815 50,900 CUP
150 GR. HDY SP Hodgdon H4350 .277" 3.285" 46.0 2575 43,400 CUP 49.0 2724 51,000 CUP
150 GR. HDY SP Hodgdon H414 .277" 3.285" 45.0 2569 45,000 CUP 48.0 2706 51,200 CUP
150 GR. HDY SP IMR IMR 4350 .277" 3.285" 48.0 2642 44,600 CUP 51.6 2809 50,900 CUP
150 GR. HDY SP Winchester 760 .277" 3.285" 45.0 2569 45,000 CUP 48.0 2706 51,200 CUP
150 GR. HDY SP IMR IMR 4064 .277" 3.285" 42.0 2584 44,000 CUP 45.0 2719 50,700 CUP
150 GR. HDY SP IMR IMR 4895 .277" 3.285" 41.5 2560 44,500 CUP 44.5 2704 50,600 CUP


NEVER EXCEED MAXIMUM LOADS

According to what I can find, your load of 58 grs AA3100, and a 150 gr nosler isd a 2 grain overload, and 300+ FPS over what max is listed. I dont know what length barrel, so maybe you can gain the velocity. Evidently you have gotten away with it so far !!! but do question the wisdom of putting out data that is an overload. It is even an overload dropping to 130 gr. but not quite as bad. Some of the data being put out on here reminds me of a song by Molly Hatchett "Flirting With Disaster":(

DR
 
I know that song

DR4NRA said:
From accurates web site

3100 130 NOS B-TIP 51.3 2,640 57.0 2,940 57,500 3.300
3100 140 HDY SBT 52.2 2,598 56.5 2,791 57,500 3.300
3100 150 SIE SBT 52.2 2,547 56.0 2,769 52,000 3.300

From Hodgdons web site

150 GR. HDY SP Hodgdon H1000 .277" 3.285" 55.0 2689 44,900 CUP 59.0C 2831 51,000 CUP
150 GR. HDY SP IMR IMR 7828 .277" 3.285" 51.2 2536 39,800 CUP 56.8 2850 50,400 CUP
150 GR. HDY SP Winchester Supreme 780 .277" 3.285" 53.4 2673 53,500 PSI 56.8 2774 61,200 PSI
150 GR. HDY SP Hodgdon H4831 .277" 3.285" 52.0 2651 46,300 CUP 55.7 2804 51,200 CUP
150 GR. HDY SP Hodgdon Hybrid 100V .277" 3.285" 48.0 2650 53,600 PSI 52.0 2811 61,900 PSI
150 GR. HDY SP IMR IMR 4831 .277" 3.285" 46.3 2498 40,500 CUP 53.0 2815 50,900 CUP
150 GR. HDY SP Hodgdon H4350 .277" 3.285" 46.0 2575 43,400 CUP 49.0 2724 51,000 CUP
150 GR. HDY SP Hodgdon H414 .277" 3.285" 45.0 2569 45,000 CUP 48.0 2706 51,200 CUP
150 GR. HDY SP IMR IMR 4350 .277" 3.285" 48.0 2642 44,600 CUP 51.6 2809 50,900 CUP
150 GR. HDY SP Winchester 760 .277" 3.285" 45.0 2569 45,000 CUP 48.0 2706 51,200 CUP
150 GR. HDY SP IMR IMR 4064 .277" 3.285" 42.0 2584 44,000 CUP 45.0 2719 50,700 CUP
150 GR. HDY SP IMR IMR 4895 .277" 3.285" 41.5 2560 44,500 CUP 44.5 2704 50,600 CUP


NEVER EXCEED MAXIMUM LOADS

According to what I can find, your load of 58 grs AA3100, and a 150 gr nosler isd a 2 grain overload, and 300+ FPS over what max is listed. I dont know what length barrel, so maybe you can gain the velocity. Evidently you have gotten away with it so far !!! but do question the wisdom of putting out data that is an overload. It is even an overload dropping to 130 gr. but not quite as bad. Some of the data being put out on here reminds me of a song by Molly Hatchett "Flirting With Disaster":(

DR
Click to expand...
I was having a hard time with his velocity claims. I have a hard time getting that with my 270 WSM. I've been pushing a 140gr Berger 3250 with 74grs of Magpro. Dang I wonder what IMR 7828 will do ?
 
Hodgdon data never has been worth a toot.
They sure re sell great powder, though.

I am getting such good results killing deer from 329 to 510 yards with 130 gr Nos Ballistic tip moly, that I can't complain.

I plan on trying VLDs for next year to see if I can become a 600 yard person.
 
my 270

I know i am going to be castigated for this one!! well here it goes, my theory is to shoot what the rifle likes. im talking hunting accuracy not benchrest as this the factory and hybrid page. my 270 remington 7600 just loves 130 remington coreloc's and IMR4350 powder. this pump action can easily place 3 inside a quarter (coin that is) at 100 yds. minute of whitetail where i hunt and all have been one shot harvests fron 50yds to 200yds in woods and nearby fields. cant beat that as it tunes easy and knocks em down just as good as those fancy tipped and expensive bullets. Fred
 
270 1:10 twist

If your happy with that bullet what is the argument?
Your right shoot what the rifle likes also what you like.
I have a club member with a semi auto that shoots 5 shot 1/2" groups .
As long as there enough knock down power , becuse thats what counts
 
For what it's worth, I've reloaded for more than 45yrs for the 270win.....

I'm not sure you need to purchase the newer expensive bullets... You didn't say what your hunting, but I've taken more than 40 Mule Deer with a good ole' Sierra 130gr BTS, loaded over 58-60grs of H4831 or SC, a CCI200 primer, if your hunting in very cold weather I use the CCI250.... Deer taken between 100 and one at 600+ yards.... Never had one walk away or take more than one good hit, most were taken in the Bookcliffs of UT or Western WY.
For elk I use the 140gr Barnes, loaded near max with the same H4831 or R22 all loaded about .015" off the lands...
Always start lower and work up you own loads...... Mine are a little hot.... However, the Remington 700LH (second one, first was stolen), still shoots a 1/2" 3 shot group at a hundred..... probably 2500 - 2600 rounds through gun... Velocities run around 3100fps for the 130gr, and 3000 for the 140gr.....

Might help, have fun, enjoy
 
DR4NRA said:
From accurates web site

3100 130 NOS B-TIP 51.3 2,640 57.0 2,940 57,500 3.300
3100 140 HDY SBT 52.2 2,598 56.5 2,791 57,500 3.300
3100 150 SIE SBT 52.2 2,547 56.0 2,769 52,000 3.300

From Hodgdons web site

150 GR. HDY SP Hodgdon H1000 .277" 3.285" 55.0 2689 44,900 CUP 59.0C 2831 51,000 CUP
150 GR. HDY SP IMR IMR 7828 .277" 3.285" 51.2 2536 39,800 CUP 56.8 2850 50,400 CUP
150 GR. HDY SP Winchester Supreme 780 .277" 3.285" 53.4 2673 53,500 PSI 56.8 2774 61,200 PSI
150 GR. HDY SP Hodgdon H4831 .277" 3.285" 52.0 2651 46,300 CUP 55.7 2804 51,200 CUP
150 GR. HDY SP Hodgdon Hybrid 100V .277" 3.285" 48.0 2650 53,600 PSI 52.0 2811 61,900 PSI
150 GR. HDY SP IMR IMR 4831 .277" 3.285" 46.3 2498 40,500 CUP 53.0 2815 50,900 CUP
150 GR. HDY SP Hodgdon H4350 .277" 3.285" 46.0 2575 43,400 CUP 49.0 2724 51,000 CUP
150 GR. HDY SP Hodgdon H414 .277" 3.285" 45.0 2569 45,000 CUP 48.0 2706 51,200 CUP
150 GR. HDY SP IMR IMR 4350 .277" 3.285" 48.0 2642 44,600 CUP 51.6 2809 50,900 CUP
150 GR. HDY SP Winchester 760 .277" 3.285" 45.0 2569 45,000 CUP 48.0 2706 51,200 CUP
150 GR. HDY SP IMR IMR 4064 .277" 3.285" 42.0 2584 44,000 CUP 45.0 2719 50,700 CUP
150 GR. HDY SP IMR IMR 4895 .277" 3.285" 41.5 2560 44,500 CUP 44.5 2704 50,600 CUP


NEVER EXCEED MAXIMUM LOADS

According to what I can find, your load of 58 grs AA3100, and a 150 gr nosler isd a 2 grain overload, and 300+ FPS over what max is listed. I dont know what length barrel, so maybe you can gain the velocity. Evidently you have gotten away with it so far !!! but do question the wisdom of putting out data that is an overload. It is even an overload dropping to 130 gr. but not quite as bad. Some of the data being put out on here reminds me of a song by Molly Hatchett "Flirting With Disaster":(

DR
Click to expand...

The lot of 3100 and the data I have are both from 1991-92 not real sure. The velocity is running 3091-3118 with a 215 I can shed up to 90fps going to a standard primer The data I used came with the box of powder that was shipped to the shop I was working in. I have shot this load in 10-12 .270's including a 7600. I have never seen a single pressure sign with uncoated bullets. Even in low 90's temps. I do know that current data lists 56 grns as a max and their published velocities are fairly close with a standard rifle primer. The 270 likes the Fed215 or 250 cci. I get much better consistency and higher velocities without the problems seen in the short case with a mag primer.
As far as what others are getting with the 270wsm or 270 wby I don't know what to tell you.
It's the same story with H4831 use a mag primer unless you already see pressure signs. It tends to decease SD/ES and will boost velocity up to 115fps in extreme cases. It seems strange because most times a mag primer will increase SD/ES. I believe it is because of the long powder column in the small bore is the reason.
 
22-250AIETRONX said:
For what it's worth, I've reloaded for more than 45yrs for the 270win.....

I'm not sure you need to purchase the newer expensive bullets... You didn't say what your hunting, but I've taken more than 40 Mule Deer with a good ole' Sierra 130gr BTS, loaded over 58-60grs of H4831 or SC, a CCI200 primer, if your hunting in very cold weather I use the CCI250.... Deer taken between 100 and one at 600+ yards.... Never had one walk away or take more than one good hit, most were taken in the Bookcliffs of UT or Western WY.
For elk I use the 140gr Barnes, loaded near max with the same H4831 or R22 all loaded about .015" off the lands...
Always start lower and work up you own loads...... Mine are a little hot.... However, the Remington 700LH (second one, first was stolen), still shoots a 1/2" 3 shot group at a hundred..... probably 2500 - 2600 rounds through gun... Velocities run around 3100fps for the 130gr, and 3000 for the 140gr.....

Might help, have fun, enjoy
Click to expand...

Wow, that is interesting. I have owned seven .270's over the years. They ALL shot 58gr. H4831 and a 130gr. NBT or Sierra lit by a 210-M well. Some shot it better than others but none of them hated that load. In all my shooting, I have never seen a load, other than maybe FGMM 168gr. in 308 shoot so well in so many rifles. If there is any truth to the concept of a "balanced load", that would have to be one.
 
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