270 WSM Loads

[littlebighorn]

Hey Guys,
I have a new Browning X bolt in a 270WSM. I got some initial great groups with 73g of Magpro with 130g TTSXs. But after the initial shooting the groups have opened up considerably. Now I am starting over.
Anyone have a pet load for this caliber that "stacks em" they are willing to share?

 

[elk_horn]

I have a 270 WSM in a Browning White gold medallian I love this gun it shoots better than any gun I have ever owned. My pet load is..............Barnes TSX 140 gr with IMR 4350 58.5 grains.

 

[lip_curl]

LAST EDITED ON Aug-31-11 AT 09:05PM (MST)[p]150gr hornady SST over 62g of RE 17. im getting 3200fps and a 6inch group at 500 yards out of browning A bolt.

 

[ibhunting]

i use that same bullet with 63 grains of RL17 bullets fifty thousands off

 

[koyote]

68.5gr of Rl22 130gr TTSX around 3300fps. 2.800" oal

 

[littlebighorn]

I appreciate the suggestions. Keep them coming if you have anything else.
I am checking my scope mounts to be sure that isn't the problem, but right now H4350 didn't work well either.

 

[sageadvice]

I had really good luck with the 140 gr accubond in front of 60+ grs of reloader 17. I cronied 3280 FPS with my final loading and saw no pressure signs. My Mod 70 stainless grouped them consistently -3/4" which considering the little i messed with the loading, was pretty darn good.

Joey

 

[lip_curl]

ib..i worked up to 63g and the bolt got sticky, the cases started getting stamped, the primer mushroomed. figured id better back off a bit. i was trying to copy the remington accupoint, i measured 63g of what looked very similiar to RL17.

 

[bulls1]

>I have a 270 WSM in
>a Browning White gold medallian
>I love this gun it
>shoots better than any gun
>I have ever owned. My
>pet load is..............Barnes TSX 140
>gr with IMR 4350 58.5
>grains.


This is the same load I shoot out of my Tikka with the exception of a few more grains of powder. One ragged hole if I do my part.

 

[NMChem]

I am also loading a Barnes 130gr TTSX with MagPro for a Tikka and a Kimber. 68gr is the best amount of powder for these guns. While velocity only averages 2950 ft/s it is very consistent. Under an inch groups have been repeated 3 times now.

During the development of this load I learned that the bullet runout (lack of concentricity) with the Barnes tends to be larger and less consistent compared to the smoother non-grooved bullets. I think this is due the fact the bullet seating process is rougher due to the grooves in the bullets. A little work with my concentricity gauge found the problem and seems to have fixed it.

I occasionally get 0.006 out of round, where Sierra Game Kings are usually .002 or less.

Has anyone else noticed bullet runout issues with Barnes?

 

[sageadvice]

NMChem, Here's my thoughts to your post. Why would you consider a 130 gr loading at less than 3000 FPS out of a .270WSM a decent loading? Unless loading down for a kid or wife, you might as well have bought a .270 Winchester if you're accepting performance like that.

Joey

 

[NMChem]

Not done. Turns out the guns are less than two months old and both are being used by youth this fall, so this is the first try to get a hunting load and should be good for them.

I know there is much more potential for speed, and I will be working on improving the speed at some point.

The post was meant to point out the benefit of improving the concentricity.

Mark

 

[sageadvice]

OK... But this "Thread" is about 270WSM loads and you stated, "68gr IS THE BEST AMOUNT of powder for these guns. While velocity only averages 2950 ft/s it is very consistent. Under an inch..."

Thus, my question!

Glad to hear that you're setting them up for a youngsters hunt!

Joey

 

[MBM]

I have had good results in my savage 270 WSM with 140Gr Accubonds and Magpro Powder. I think I am using 72.0 or 73.0 Grains. Getting about 3300 FPS and groups very well.

Mark