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270 WSM best combo?

 
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  #1  
Old 10-21-2012, 08:04 PM
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Join Date: Oct 2012
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270 WSM best combo?

OK. So I have been through the forums and found a couple of posts concerning the 270 WSM. I am trying to work up a load for hunting season this year but there are still holes in the data I have. I have selected the 130gr Accubond as my projectile and will be using Winchester once fired brass. What I still need are 1. Powder. 2. MAX Charge and starting charge. 3. C.O.L. It seems that most reloading books/sites have their own opinions on COL and powder charges so I was hoping some of you with a little more experience than me could help fill in the blanks. I have access to several powders to work with. These include RE-19, RE-22, IMR 4350 and 4831, and Hogdon 4895 and Retumbo. The rifle is a modest Winchester Super Shadow. In this instance I am probably looking for accuracy first. Anyone have any suggestions?

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Old 10-21-2012, 08:37 PM
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Re: 270 WSM best combo?

i have the same rifle, i seat 130 accubonds at 2.86 which is .01-.02 of the lands. my most accurate load so far has been 62.5 grains of imr 4350. max in noslers book shows 63...so i would work up to it just for safety. i am working with rl-22 now but havent found anything that beats the imr4350
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Old 10-21-2012, 10:55 PM
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Join Date: Oct 2012
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Re: 270 WSM best combo?

Thanks. The max load is what had me a little edgy. I have Sierras 5th and Lymans 49th. Lyman lists max for 4350 at 62 and Sierra lists max at 62.7 or something like that. Thought it best to ask around.
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Old 10-22-2012, 01:16 AM
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Re: 270 WSM best combo?

I have had great luck with H4831sc and fed 215 primers with 130 accubonds, the Winchester brass on the other hand was horrible wouldn't recommend it. My load is at 65.5 grains at 3200fps. Coal I use is 2.860. I haven't played with seating depth yet to see what results I could get.

I have also tried IMR4350 and that showed promise but the H4831sc was the clear winner. I also tried Magpro very good velocity but bad groups.

Nosler manual shows max load of 66.5 for the H4831sc and 63.0 for IMR4350.. Work your loads up.
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Old 10-22-2012, 08:26 AM
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Join Date: Feb 2011
Location: Western NC
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Re: 270 WSM best combo?

I have not loaded Accubonds but I have a very accurate load with 130 Barnes tsx and 130 Nosler BT. I have tried rl-19, imr 4350, and accurate magpro. So far the magpro is my goto for all loads I have tried because my largest velocity spread was 12fpsb. And imr 4350 is a little less temp stable. Out of my rifle 73.0gr with the BT's gives 3300fps. And 75.0 with the tsx give 3500fps. Using fed brass. Wlrm primers. And as far as col goes that is something you have to experiment with in your particular rifle.
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  #6  
Old 10-22-2012, 09:01 AM
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Re: 270 WSM best combo?

Ranger188 I have IMRs 4831. Does it behave much differently than the Hodgdon variety?
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Old 10-22-2012, 09:29 AM
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Re: 270 WSM best combo?

I was surprised to find that Retumbo worked as well as it did in my rifle. I used 69.5g of Retumbo, a 215 primer, and a 140g Accubond for 3100fps. Very accurate in my hunting rifle which normally isn't a bughole shooter(Kimber 8400).

I will have to say that the terminal performance of the 140 AB was poor compared to the 140g Interbond(or Sierra hpbt) I had been using. I put 3 shots into a sub 3" group through the heart and lungs of a nice Whitetail at close to 100 yards and none of them showed much expansion. In fact the exit holes actually were cleaner and smaller than the entrance holes and non were bigger than a nickle. I am used to up to fist sized exit holes so that experience pretty much ended my use of Accubonds(same reason I don't use ballistic tips).

Magpro and RL17 is good as is 4831 and 4350. H4831 is more stable than the others though.
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