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140 gr Accubond 7mm WSM load recommendations |
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dezmick
Optics Apprentice Joined: February/14/2008 Location: Oregon Status: Offline Points: 163 |
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Posted: March/25/2011 at 00:08 |
I am wanting to load 140 gr accubond for my 7mm WSM, and i was hoping to get some recomended loads for that bullet, i am new to reloading and i am not sure where to start with the cartridge o.a.l, in the nosler book it says that max is 2.860, is that where i should star or should i seat the bullet in deeper, like i said i am new to reloading and any advise would be appreciated. Thanks
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300S&W
Optics God Joined: January/27/2008 Location: Burlington,WV Status: Offline Points: 10592 |
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I don't have the Nosler manual with the 7mm WSM in it. If I did I would start with which ever powder they show as "most accurate powder tested". As far as OAL goes your magazine box may be your limiting factor. Just start with Noslers suggested OAL and see how it groups. That's what they used and by seating the bullet deeper you'll raise pressure.
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"I ain't got time to bleed!"
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pyro6999
Optics Retard OT TITAN Joined: December/22/2006 Location: North Dakota Status: Offline Points: 22034 |
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my only question is why the 140gr??? if thats all the heavier of a bullet your using, your not using the wsm to its full potential. i would shoot the 160gr accubond out of it if it was me. rant off.... now to your original question. like was mentioned above, in general your magazine will limit the oal, if your mag will allow you to go out to 2.86 then load one up and see if it will cycle in your bolt. if it will run with it. most of my rifles, dont allow me to go to published oal. i put them out there as close as possible otherwise. |
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They call me "Boots"
375H&H Mag: Yeah, it kills stuff "extra dead" 343 we will never forget God Bless Chris Ledoux "good ride cowboy" |
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RifleDude
MODERATOR EVIL OPPRESSOR Joined: October/13/2006 Location: Texas Status: Offline Points: 16337 |
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Keep in mind that the listed max OAL is the SAAMI dimension that ensures function in all rifles chambered for the round. There is no requirement to adhere to that if the load isn't too long to function in your rifle. Quite often, your magazine box length restricts your max OAL. If it doesn't, you'll frequently get the best accuracy by setting your OAL so when chambered, the bullet ogive is either kissing the lands or is very close (0.005 - 0.020) to the lands so you have less bullet "jump" before engaging the rifling. This helps ensure the bullet centerline is starting into the rifling as concentric to the bore centerline as possible. It does increase peak pressure, though, so you need to back off from max listed powder charge at least 4 - 5 gr to start and work up lots of 5-10 loads in something like 1/2 gr powder increments until you see mild pressure signs. Start long and tweak bullet seating depth in .005" increments until you find the "sweet spot" your rifle likes.
Either get one of the various OAL gages for determining how long your chamber's throat is or work up dummy rounds with no primer or powder and keep seating the bullets deeper in small increments until the bolt will just close on the dummy rounds with mild resistence. You don't want to jam the bullet in the lands hard, as this can cause the bullet to pull out of the case when you extract a live round, not a good situation in a hunting rifle. Just a kiss will do. Once you know your "kiss" depth, you can tweak bullet seating depth inward in small increments from there and let your rifle tell you what OAL works best.
I wouldn't normally go with a 140 in a 7WSM, but my 7WSM happens to like the 140 TTSX a lot, so I use it. With a tough, "long for caliber" all copper bullet like that, you can go lighter and still have the same terminal effects as a heavier for caliber bullet. If your rifle shoots 140 ABs well, by all means use it. I wouldn't feel the least bit handicapped in chasing any critter in North America with it.
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Ted
Money can't buy happiness... but it's much more comfortable to cry in a Porsche than on a bicycle. |
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dezmick
Optics Apprentice Joined: February/14/2008 Location: Oregon Status: Offline Points: 163 |
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i want to use the 160gr accubond, but as of right now i can't find any of them, even nosler's website is out of stock, so i got a box of the 140 grn, as well as a box of 150 grn Barnes TTSX, and 150 grn nosler E-tip, just to see what shoots best out of my rifle, when i can find the 160 i will be buying some.
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pyro6999
Optics Retard OT TITAN Joined: December/22/2006 Location: North Dakota Status: Offline Points: 22034 |
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that sucks!
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They call me "Boots"
375H&H Mag: Yeah, it kills stuff "extra dead" 343 we will never forget God Bless Chris Ledoux "good ride cowboy" |
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dezmick
Optics Apprentice Joined: February/14/2008 Location: Oregon Status: Offline Points: 163 |
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I was able to pick up some 160 grn Accubond today, they just got them in, so i grabbed 2 boxes of them, now does anyone have any loads worked up or could anyone work up a load on quick loads using the 160 grn Accubond with RL19 & RL17 powder, that is the 2 powders that i have right now and have been told that they are very good powders for the 7mm WSM. Thanks
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pyro6999
Optics Retard OT TITAN Joined: December/22/2006 Location: North Dakota Status: Offline Points: 22034 |
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they dont show those powders in the nosler 6th edition
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They call me "Boots"
375H&H Mag: Yeah, it kills stuff "extra dead" 343 we will never forget God Bless Chris Ledoux "good ride cowboy" |
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SVT_Tactical
MODERATOR Chief Sackscratch Joined: December/17/2009 Location: NorthCackalacky Status: Offline Points: 31233 |
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I would start with 19 before the 17, I'm thinking you'd be better off moving up to the R22 though. But thats strickly a guess on how other magnum's I've looked at and the standard old 7mm mag I load for now likes
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pyro6999
Optics Retard OT TITAN Joined: December/22/2006 Location: North Dakota Status: Offline Points: 22034 |
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i tried rl22 and rl19 in my 300wsm, and the rl19 was by far more accurate for me. if you dont have any rl17 imr 4350 works very well in the wsm's as well. rl22, is a highly controversial powder on other forums. some claim wild changes in poi and pressure in extreme temps, i myself, didnt note anything like that in sub zero temps, but i would expect to see pressure spikes in winter. which is why i dont spend much time shooting when its 90 degrees. i would be interested to see what you do get with rl17 though. |
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They call me "Boots"
375H&H Mag: Yeah, it kills stuff "extra dead" 343 we will never forget God Bless Chris Ledoux "good ride cowboy" |
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