Reloading help for .270 Win

[royinidaho]

Happy to see the interest and use of the 270 Win cartridge.

It's a good one!!!

I've shot one for 45 years. Rebarrelled after about 35 years.

Favorite powders for 130 and up offerings:

4831 - Least favorite - Lacked velocity in my rifle
4350 - Too hot for maintaining 3200 FPS but used it for decades. About 20 shots per case.
N205 (The very best powder for Vel and Accuracy)
RL-22 - Same as N205 with a ton less quality control, so I hear. Loose 130 FPS MV from summer to less than 20*F winter. However, this didn't seem to make much difference in harvest success out to 500 yards or so. @ 650 and beyond it wouldn't work, I'd think.

7828ssc for 150s

Used same charge weights for Nosler 130 & 140 and Berger 140 VLDs. Velocity is right at 3200 for these bullets.

For light bullets I shot only the Sierra 90gr Hp. 54.5 of 4895 gave 3400 FPS.

Average accuracy was .75 MOA until I replaced the circa 1966 Douglas Premium with a 27" Lilja. Expected accuracy is now under .5 MOA.

 

[Robinhood493]

Winchester cases
Federal 210's
130g Partition
60.2g H4831sc
1/2" MOA

 

[rosborohunter]

Happy to see the interest and use of the 270 Win cartridge.

It's a good one!!!

I've shot one for 45 years. Rebarrelled after about 35 years.

Favorite powders for 130 and up offerings:

4831 - Least favorite - Lacked velocity in my rifle
4350 - Too hot for maintaining 3200 FPS but used it for decades. About 20 shots per case.
N205 (The very best powder for Vel and Accuracy)
RL-22 - Same as N205 with a ton less quality control, so I hear. Loose 130 FPS MV from summer to less than 20*F winter. However, this didn't seem to make much difference in harvest success out to 500 yards or so. @ 650 and beyond it wouldn't work, I'd think.

7828ssc for 150s

Used same charge weights for Nosler 130 & 140 and Berger 140 VLDs. Velocity is right at 3200 for these bullets.

For light bullets I shot only the Sierra 90gr Hp. 54.5 of 4895 gave 3400 FPS.

Average accuracy was .75 MOA until I replaced the circa 1966 Douglas Premium with a 27" Lilja. Expected accuracy is now under .5 MOA.

Great post! I too love the .270 and will be buying a lb of the N205 to try.
Thanks for the information.

 

[texas270]

Much the same here...

Started with RL-22 and it was great all around, except that it had a very wide velocity spread depending upon temp. Tried H4350 for awhile without a lot of success, then went to H4831sc, and that has been great. Need to be able to load a little more powder than with RL-22 but very consistent and equally excellent accuracy.

Started with Nos 130 Accubonds and have switched to the 140 Accubonds since last season. it has worked great on the range and sure has stronger long range perfromance upon the balistic charts, largely due to higher BC.

Also use Fed210M primers and Norma brass which is great on the first load right out of the box

 

[Red Sparky]

The favorite load for my .270's is 48 grains (I think) IMR 4064 with 130 grain Nosler Partitions. This load has taken mulies out to 500 yards with no problems. Good hunting accuracy as these are hunting rifles and they give me 1" at 100 yards and me being the limiting factor I get 6"-7" groups at 500 from a solid rest.

 

[FUBAR]

I have used most listed, and I also use my rifles in extreme temp changes....I have had great success with Ramshot Magnum and standard primers in a couple of my other rifles ( 6-284 & 6.8 SPC). It 's extremely stable in a wide temp spread....

I'm going to work up a few loads for my 270 soon but it's a few down on my queue.....


Just depends how much you want to experiment.....

 

[Joe King]

I have used most listed, and I also use my rifles in extreme temp changes....I have had great success with Ramshot Magnum and standard primers in a couple of my other rifles ( 6-284 & 6.8 SPC). It 's extremely stable in a wide temp spread....

I have been wanting to hear about that in regards to Magnum! thanks

 

[FEENIX]

Please explain "velocity spreads"..........What is the barrel twist on the 165/175 grain Matrix VLD's?

Thanks

Matrix recommends 1:9 for 165gr and 1:8 for the 175gr. I have a 30" barrel with 1:8 and getting these results while fire-forming brass to AIs:

165gr = 2981 FPS, SD = 17 FPS

175gr = 2919, SD = 16 FPS

see post #10 of http://www.longrangehunting.com/forums/f22/my-budget-270-ai-97745/index2.html

I use this to calculate my SD ...

Standard Deviation Calculator

 

[moosekiller99]

Ruger M77 tang safety in .270 has been "my" rifle since 1980. Only modification was a Ramline stock many years ago. Worked up so many load combinations that shot well I have to look in my records to recall them all. What I am loading now is: 140 Accubonds; SST's; and Ballistic Tips with 57.5 grains of IMR 4831; Winchester cases; BR-2 primers. 3090 fps with the AB's. .75 and smaller groups always.
I've been loading 150 VLD hunting bullets with 53.2 of IMR 4831 with outstanding accuracy for my rifle. Sub .5 groups @ 100 yds and less than 1 MOA @ 300. Same bullet with Reloader 22 with similar results. I have a crop damage permit to fill and will test this bullet's performance at the 300 yd distance on a sufficiently old and fat whitetail doe. I'm told I shouldn't expect to employ any tracking skills after the shot if I do my part.

 

[Lefty7mmstw]

54 grains rl17 and a 130 nos bt is a 1" load at 200 yds in my tikka at standard oal.(3.34") and with 130 sierra's it's 60 rl22. For a 150 hornady I'm using 56.5 grain 7828(long cut not Super Short Crap). I just dumped a .4" 100 yard group with the 150's out of my Marlin 270 today, and that rifle isn't as good as my Tikka. I use wrl or wlrm in the 270, just work up loads with the intended primer to start with.

 

[Lefty7mmstw]

mooskiller99 is right, the 270 isn't that hard to find a good combo for. Any medium slow powder and good bullet should work pretty dang well. Everyone has their own "pet load" for this one.