.270 accuracy update

If I were you, I'd drop.....................

the target you showed in the picture of your group. I'd get some Leupold Sighting-In targets. Depending on the power and clarity of your scope, these targets should be usable to 400yds. depending on conditions. What I do, is to put the vertical wire alongside the leftside, and the horizontal wire along the base. Then, always using the lower left-hand corner as the point of aim (POA), I go from lower left square to upper left; then over to upper right, then down to lower right-hand square, a clockwise trip. By holding the wires along the base and side, you can get a very precise hold, and see easily any mistakes in holding, because of the contrast of the B/W target. Unless there are special sights, it is difficult to get a tight hold on a round target face, and colors, like red and day-glo, tend to "bleed" around the reticle and can give an indistinct aiming point. Even at 200yds, your point of impact(POI) can be 2 inches high, so it will not shoot out your point of aim, making it indistinct as a result of getting shot away. HTH :)
 
Mattri:

I haven't read all the associated posts, but .5" groups is pretty respectful in my humble opinion.

I have not handloaded for any cartridge using the 30.06 Springfield as a parent case, but have attempted using Hodgdon H4831 for handloading a couple 7mm Remington mags.

In both 7mm Remington mag rifles, when I went from using Hodgdon H4831 to Hodgdon H1000, group size was reduced, pressures and velocities were acceptable.

I haven't looked to see if there is reloading data for a .270 Winchester, but if so, give Hodgdon H1000 a try.

Old Cob
 
GEDC0512.jpg


140 grn Nosler BTs over 55grns of H4831 CCI 200s in formed brass. .325 @ 100.
 
Last edited:
Rifle Accuracy Facts and the 270

Read Rifle Accuracy Facts by Harold Vaughn. He did similar work with a 270.
 
30378 said:
At 51gr of H-4831, you load seems extremely low. I would start increasing power by 0.5gr a see what you get. Case capacity or load density is very important. With 130s I shoot 57gr in mine with great results.:D
Click to expand...

Fill er up to the neck, and maybe a tad more with 4831.
 
GEDC0564.jpg

350 yards.


GEDC0562.jpg

100 yards.

The .270 continues to amaze me. Tried some lighter bullets and they did not perform well. Have a 9.5 22" barrel so don't think that was the issue. The 135 Sierra MKs did well but these 140grn Nosler BTs have been the best by far.
 
I have loaded for several .270's and I also favor 130 gr. Nosler Ballistic Tips, with RL 22 or H4350.
Don't discount the Nosler BT's on deer size game.....been using them since the early "90's, and although they may destroy some meat, especially at close range, it beats searching the swamps and thickets all day for a crippled animal.
Some nip a bit of the plastic tip off, to get them to fit in the magazine...with no significant ill-affect at ranges to 400 yards or so.
 
This is my hunting load for mulies, elk and pronghorns. Really wish the bullet companies would offer a better selection of high quality match bullets for the .270.
 
I have been lurking around and learning from this site for a year now but this thread finally got me to reply. I love 270 anythings! For the 270 Win I load 60gr of 7828 under a 130 Berger for some excellent results on game and paper.
I've been working with a 270 WSM and 140 Bergers and they are outstanding!
I have petitioned Berger for a 160-165 gr Hybrid bullet for the 270 cal, doubt it will happen but I can wish.
 
Last edited by a moderator:
Matt
No matter what anybody says for a huntung rifle you have reached the limit of useable accuracy with your .270. Assuming those are 100 yd groups your groups are impressive. Takes a heck of a rifleman to shoot heavy 4831 loads and keep them in 1/2" groups at 100 yd. Matt you are shooting 1/2 MOA at 100 so you could expect some 1" groups at 200 and maybe some 1 1/2' groups at 300, ll depends if you are in sync with the winds. I would venture to say there only a handful of shooters and guns on BRC that could match your.270. If some Poster shows 1/2" groups at 300 tell him to stick those groups up his petutie. I know Matt I've done what you are doing. Great job in bringing out the best in your .270.

Stephen Perry
Angeles BR
 
Thanks again for the great replies. Think we've pretty much reached the point of diminishing returns with this rifle. So have decided to build a target/varmint .270. Plan at the moment is to use a Savage long action, Shilen or simmilar 26" heavy barrel 1:10 twist, Sharp Shooter Supply trigger, SSS laminate varminter stock and a Nikon Monarch 6-25x50. This is still in the planning stages so any and all suggestions welcome. Thanks again, Matt.
 
Matt,

I live in Aus, and bench rest a 270 win. Load is 135gr SMK, 61.5gr AR2217(H1000 in the USA), Fed210M primer, in Norma brass. Barrel is 29", 1.25 straight Kreiger. MV is 3110 fps, best group at 100yrds is .192.

If I put another 270 barrel in this action, it will be a 12 twist, as you don't need the extra speed twist. Gun is used for 600yd and 1000 yd competitions. Biggest drawback to accuracy is the organic thing attached to the trigger
 
justjeff, thanks for the reply. Glad to hear others shooting the .270 for accuracy. Was going to use the 1:10 twist in order to shoot the heavier 150, 160grn bullets. Berger makes a 150grn VLD with a .531 bc that looks promising and Hornadys 150 grn SST has a .525. What action are you using? How does it group at longer ranges? Thanks, Matt.
 
Matt,

My rifle started out as a Rem 700 SPS. Trigger is a Rifle Basics benchrest, 2oz, scope is a
Nightforce 10 - 42, barrele is Krieger as previously mentioned. I got a custom reamer from Dave
Kiff, it is basicly a tight chamber, with a .306 neck, instead of .310, with only .050 freebore so I
can get VLD's into the lands if I wish. I have tried both the 140 and 150 Berger, but they didn't
perform as well as the Sierra, I found out why when I put them over a Juenke, the Sierrra were
all 2 - 5, the best Bergers started at 4 and went to 12.

Have shot 2.1 at 600 yds, and also 8.1 at 1000yds. I have just put a new stock on the gun, which
will hopefully pull those numbers down a bit. I shoot with the Aus 1000yd record holder, so when
he shoots a 6" group, at 1000yd, and I shoot 8", I am not too disappointed.

I have added a pic, stock is made from 1" aluminium, barrel block is 80mm dia, with barrel glued into the block. Will shoot it's first comp in this layout tomorrow.
 

Attachments

  • New HG 1.jpg
    New HG 1.jpg
    17 KB · Views: 334
WOW looks great. I'm nowhere near that leval of performance yet. Great shooting and good luck tomorrow. Be sure to post your results.
 
Well Matt, done and dusted, best group I could manage was 2.9", however, given the other results for the day, not too bad. Was third smallest group on a day with winds from 0 - 30 knots, with 120deg direction change. The good thing was the new stock is tracking really well, with no or minimal corrections between shots, and the barrel block really controls barrel heating, given it is such a big lump of metal. Next shoot is a month away, so will be hoping for better conditions. Best group on the day was 1.9".

Jeff
 
Hello mattri. I one day was playing around with a Winchester mod 70 featherweaight push feed gun in 270. This was many years ago! the 270 pretty much shot like a shotgun. The first thing I did was to float the barrel. That made a big difference! With hand loads or some factory loads the gun was a inch, inch and a half gun. not bad for a hunting gun. I don't know why I tried AA3100 but I did. That powder with a 135gr SMK was a tack driver. If you were up to? a five shot group that you could cover with a dime was common. The only bad thing about AA3100 is that it is temperature sensitive. Big pressure drop when it gets cold. I don't remember the load? But I do remember the powder came about half way up the neck for a med charge. I used Federal brass and I seated the bullet one and a half turns down on the seating stem off the lands. I think my gun shot well with 3100 because it's a slow powder in a light gun. There was less of a kick! more of a shove when fired. I don't know just a guess? Good luck Rick
 
Congrats justjeff, that sounds like a good outing to me.

Thanks for the reply impact, lots of potential in the .270s.
 
You must log in or register to reply here.
Back
Top