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New 270 WSM, looking for load data ideas
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 Posted: Tue Jan 3rd, 2017 05:18 PM
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1187Shooter
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Picked up a nice Ruger Mk-II in 270WSM this weekend. I'm hoping to put together several different loads for it, for different applications.

First is a good medium/long(ish) range deer/elk load. I think 500 yards is a good outside limit for me, although I don't ever see myself needing that. I've always hunted pretty much inside of 250-300 yards most of my life but I'd like to be able to practice at longer ranges.
I was really impressed with the Hornady Precision Hunter ammunition my brother in law was using last month in Texas, so I'd like to try to come up with something along those lines using the 45 grain ELD-X. I also really like Hornady Superformance ammo. Hornady has no 270WSM data on their website, and very little in my 9th Ed. manual. The 10th Ed. may have more, but I don't have that yet. I also like the Berger Classic Hunter 140 grain, and wouldn't be adverse to trying a Barnes bullet, either.

My next load would be a utility/hog/plinking/bulk load that uses a cheaper bullet, Interlocks maybe, something that wouldn't break the bank.. (130, 140 and 150 grain Interlocks right now are $0.23-24 ea right now at Midway.) Doesn't need to be a screamer, but needs to be able to kill a deer or hog out to a few hundred yards in a pinch. Probably mimicking 270 WIN performance.

Lastly I'd like to try my hand at coyote/varmint hunting, so I'd think a lighter bullet a a reasonable speed would be the ticket? I suppose I could use either of the other loads, as well. I haven't hunted coyotes with anything other than a shotgun in the past, and used to shoot ground squirrels as a kid in Canada with a 22, but never with a centerfire rifle. I think a 90-100 grain bullet would be great to try out...

One concern is that the barrel, being a couple inches shorter than normal, will throw off any data that I can find. I don't have a chrono yet so I have only the published data to go by. Eventually I'll pick one up but for now, it's just guesswork.

As usual, thanks in advance for any experience anyone can share with this cartridge, especially in this particular rifle...



 Posted: Tue Jan 3rd, 2017 07:42 PM
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RobertMT
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I've had best results with 4350 and 4831 with 130-140gr premium bullets. You need fairly tough bullet to hold together at speed.

For varmints 110gr bullets for 6.8spc work well, 135gr SMK works well at longer ranges. I've found H1000 burns cooler, to decrease barrel erosion.

For hogs, I would use bullet with sound construction, in the heavier weights. I've used both H380 and 4895 for reduced loads in 270win and 6.8spc range.

270wsm has limited life in barrel, the cooler you keep it, the more life you get.



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 Posted: Tue Jan 3rd, 2017 08:16 PM
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Norge
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I worked up loads for 270 Weatherby using Woodleigh's 180gr. .270 bullet. I cannot recommend this bullet highly enough for a .270 magnum. Great SD, unsurpassed BC, and tough construction that stays together if you should have a shot at close-range. I will be posting my data for this load later, but I annot recommend any data for a caliber I do not own. I would, however, recommend using IMR 7828SSC if you should have an interest in using this bullet for heavy or dangerous game. For .270 WSM maybe, starting out around 55-56 grains, and develop from there?



 Posted: Tue Jan 3rd, 2017 08:28 PM
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1187Shooter
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What is the preferred twist for that bullet? my rifle is 1:10, and from what I've been able to determine, I need to stay within 110 to 150 grains for conventional bullets... is the WBY a faster twist than the WSM?
I've read good things about the Woodleighs for heavy game, and if I were back up North I'd definitely want something like that on hand.



 Posted: Wed Jan 4th, 2017 12:26 PM
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Norge
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Funny you should mention twist rate, as there is a bit of a question about that anyway. Some data says the Weatherby has 1:10, including Weatherby's own website, but some smiths say that they actually have 1:9.5" rate and just label it 1:10. When I tried to measure mine, I actually came out at 1:9.5"......I think. My methods may leave a bit to be desired in that attempt.
Either way; The bullet seemed to shoot very accurately to 300yds, I did not have anywhere to attempt longer range accuracy tests on it locally. Woodleigh markets the bullet by the title of; 180 grain .270 Win. PP (protected-point). Since every .270 Win I have researched comes with 1:10 rate, one would think that Woodleigh tested the bullet for accuracy with that 1:10 twist. I would like to add this though: While twist is the primary influence on bullet stability, one cannot over look velocity as a major contributor to rotational stability. If 1:10" twist have proved acceptable for 'hunting accuracy' in the .270 Win, then the increased velocity gained with the .270 mags should only increase the stability of the round to even longer ranges, imho. I would just say, as with all things new, you may have to find out how they work by loading some. While the Weatherby has an advantage over the WSM velocity wise, the WSM has the same advantage over the .270 Win. I would guess that you will have no problem putting rounds on target at responsible ranges.

  Re-read your post and would add; Woodleigh did not actually list a 'preferred rate of twist. My opinion is No, you are not limited to 150gr or less with .270, after all, 180gr bullets have delivered match accuracy in 1:10" .30 cal rifles for generations, same with 160 gr bullets in 7mm/.280 rifles. The smaller .270 should have increased stability if logic applies.

Last edited on Wed Jan 4th, 2017 12:45 PM by Norge



 Posted: Wed Jan 4th, 2017 09:39 PM
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olyeller
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I use a max charge of MagPro and Sierra's 150gr GameKing. Groups well. Have taken cow elk at 100 and 465yds with it.

I like the idea of the 145gr ELD-X and have gotten a box for the 270WIN and the WSM.

Long bullets take up valuable case capacity in the WSM; I believe the 180gr would not work well here for you. YMMV

Don't waste your time trying to neck or "minimum" resize the case; you will need to bump the shoulder nearly every sizing cycle.



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 Posted: Wed Jan 4th, 2017 10:52 PM
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olyeller wrote:

Don't waste your time trying to neck or "minimum" resize the case; you will need to bump the shoulder nearly every sizing cycle.

I'm glad you mentioned that, I would probably have started out 'wasting my time' :cool: As it is, I haven't bought dies for it as yet. Actually my wife's uncle said he might have a set tucked away somewhere. The rifle came with 6 plus a partial (17) boxes of various ammo as well, so with 137 rounds I should be good for a little while. At least to get a feel for how it handles and to get the scope on paper.



 Posted: Wed Jan 4th, 2017 11:07 PM
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olyeller
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1187Shooter wrote: olyeller wrote:

Don't waste your time trying to neck or "minimum" resize the case; you will need to bump the shoulder nearly every sizing cycle.

I'm glad you mentioned that, I would probably have started out 'wasting my time' :cool: As it is, I haven't bought dies for it as yet. Actually my wife's uncle said he might have a set tucked away somewhere. The rifle came with 6 plus a partial (17) boxes of various ammo as well, so with 137 rounds I should be good for a little while. At least to get a feel for how it handles and to get the scope on paper.

yeah, I'm just hard-headed enough to have tried "standard" sizing methods, but as RobertMT told me when I started loading for the 270WSM, it is a waste of time. I have to set my dies to toggle over hard to get reasonable chambering of handloads. Maybe I have a minimum size chamber. Regardless, I have to bump the shoulder or the bolt will not close after 1 or two shots.

Seems to shoot best at near max loads.



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 Posted: Wed Jan 4th, 2017 11:37 PM
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Don't feel bad, I actually bought a neck sizing die for mine. I used it on the first 5 cases then tried to chamber them. Now it rests at the bottom of the stack of die boxes, never to see the light of day again.



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 Posted: Wed Jan 4th, 2017 11:46 PM
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olyeller
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Ozark Ed wrote: Don't feel bad, I actually bought a neck sizing die for mine. I used it on the first 5 cases then tried to chamber them. Now it rests at the bottom of the stack of die boxes, never to see the light of day again.:lol::lol::lol:

Hey, did you take the 270WSM on the elk hunt with Swampshooter?



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 Posted: Thu Jan 5th, 2017 12:55 PM
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Ozark Ed



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I did, but I had to use factory stuff as I couldn't get an elk load worked up in time due to some family and work stuff. I shot some Noslers with 140 grain Accubonds. Until this trip I was 2 for 2 with one shot kills on cows.



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 Posted: Thu Jan 5th, 2017 01:24 PM
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olyeller
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Ozark Ed wrote: I did, but I had to use factory stuff as I couldn't get an elk load worked up in time due to some family and work stuff. I shot some Noslers with 140 grain Accubonds. Until this trip I was 2 for 2 with one shot kills on cows.
I tried handloads with 140AB's for my 270WSM; kept getting intermittent fliers. Same thing with 150gr Hornady Interbond. The Speer 150gr Grand Slam was a 1.5moa performer.

I loaded H4831, RL-25, Supreme 780, IMR4350, and Magpro. Going to explore Alliant 4000-MR when I get a chance. Settled on MagPro at least for now.

My second choice turned out to be the 150gr Partition; it stayed under 1moa.

I finally gave up and loaded some 150gr Sierra GK's. Good idea as they turned out to be The Winner. They are consistent, accurate, and have served me well on cow elk. The one at 465yds broke both front legs and breastbone, the 105yd shot was a "bang-flop, 2-3 kicks-and-it's-over" shot.
Our guide those two years was great; he also is a 270WSM fan for elk hunting.:wink:



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 Posted: Thu Jan 5th, 2017 02:22 PM
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Ozark Ed



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I've tried H4350, Varget, and Hybrid 100. I have some H4831SC but have not tried it yet. I can get two shots in 1 moa but the third always opens up. My best group was with Varget and 130 grain Accubonds, but that was a deer load and it was at standard 270 win velocity and the low end of the charge weight range.



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 Posted: Thu Jan 5th, 2017 04:13 PM
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olyeller
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Sounds familiar. I too want to try some Hybrid 100V.
Try some SGK's, or 150gr Interlocks. I also think 140 or 150gr SST's would work, but may be a little too "dramatic".



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 Posted: Thu Jan 5th, 2017 04:58 PM
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1187Shooter
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Game Kings were one of the bullets I looked at, but I don't know much about Sierra bullets... they are not that expensive, so wouldn't break the bank to try out. I think they are about $0.30 a piece from Midway right now.
They certainly look good.



 Posted: Thu Jan 5th, 2017 05:12 PM
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Ozark Ed



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I went with the Accubonds because they are very accurate in my other cartridges and I wanted a bonded bullet construction for 270 wsm velocities. When you get into the 3200 fps muzzle velocity range I want a tough bullet in case of a close range shot.



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 Posted: Fri Jan 6th, 2017 12:08 AM
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olyeller
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Ozark Ed wrote: I went with the Accubonds because they are very accurate in my other cartridges and I wanted a bonded bullet construction for 270 wsm velocities. When you get into the 3200 fps muzzle velocity range I want a tough bullet in case of a close range shot.
Well, the 150gr SGK was a pass through chest shot at 105yds according to Swampshooter's laser. bang-flop, it's not bonded and did the job ok there and at 465yds as well.
YMMV


Attachment: 270wsm 150SGK3.JPG (Downloaded 39 times)



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 Posted: Thu Feb 16th, 2017 05:40 PM
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130 gr Ballistic Tip Magpro 75.00 3460 3462 3457 CCI 250 Touching 4/23/2012
140 gr AB Magpro 74 gr 3299 22.345021817 1/2 inch group
140 gr AB Magpro 74.2 gr 3317 22.7 SD CCI 250


It is hard to beat MagPro in the 270 WSM. If you do not want to go fast, this is a reduced load for close range practice:
110 Sie Soft Point 5744 34.7 g 2665 CCI 250



 Posted: Thu Feb 16th, 2017 11:04 PM
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Nisqually6.5 wrote: 130 gr Ballistic Tip Magpro 75.00 3460 3462 3457 CCI 250 Touching 4/23/2012
140 gr AB Magpro 74 gr 3299 22.345021817 1/2 inch group
140 gr AB Magpro 74.2 gr 3317 22.7 SD CCI 250



It is hard to beat MagPro in the 270 WSM. If you do not want to go fast, this is a reduced load for close range practice:
110 Sie Soft Point 5744 34.7 g 2665 CCI 250

The data above for the 140gr AB bullet is significantly above Nosler's published data, and also above Accurate's published data for that bullet.

DO NOT USE THIS DATA WITHOUT STARTING LOW AND WORKING UP, LOOKING FOR SIGNS OF EXCESSIVE PRESSURE. IME, I GOT STICKY BOLT LIFT WITH 71.0GR OF MAGPRO AND THE 150GR SGK IN MY REMINGTON 700.

AS ALWAYS.....
CAUTION: This post discusses loads or load data that may or may not be appropriate for your gun or for the cartridge(s) and components mentioned. Due to typos, variations in guns and components, and the abilities and judgment of users of this data, neither the writer, Handloadersbench.com, nor the staff of Handloadersbench.com assume any liability for damage or injury resulting from using this information. DO NOT ATTEMPT TO DUPLICATE THE DESCRIBED LOADS without first working them up from a published safe starting level charge while watching for pressure signs. If you don't know how to do that please don't use this data, for your own safety and the safety of others.



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 Posted: Wed Mar 29th, 2017 06:23 PM
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Gonna revive my old thread...
I'm now almost settled in, new job, new town, new state... getting ready to close on a house, which even has a room for me to set up as a reloading room...
Once I get in there I'll be able to start working up some proper loads for the 270 WSM. Got some good starting points to work with here... thanks for the help.
I'm also going to work up a load with H4895, since I have plenty of that powder on hand. I'm looking for a decent low power load that can still handle some lighter hunting duties. Hodgdon's data says I would be seeing between 3338 and 3505 fps with a 100gr bullet from a 24" barrel. Mine has a 22" tube so I'll be a bit lower than that, but that is plenty for those little Texas whitetails and right in the 270 Winchester range. It wold be a great coyote round, too.
I think for Elk I'm going to look at the 145 gr ELD-X, among a few other bullets.



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