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#5969248 - 10/09/15 10:13 AM 270 WSM
ltsheets Offline
Tracker

Registered: 11/12/11
Posts: 633
I'm about to load up some 270 WSM loads for testing...gonna load 140 AB over H1000. For those of you who've used the 140AB, how far from the lands have you found the sweet spot? I'm thinking .05 off is probably a good starting point?

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#5969257 - 10/09/15 10:16 AM Re: 270 WSM [Re: ltsheets]
kmon1 Online   content
junior

Registered: 09/27/06
Posts: 22229
Loc: Texas
That bullet is not that depth sensitive from my experience. No more than I shoot the 270WSM and the way mine shoots the factory loads with that bullet I have not bothered reloading for it.
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#5969492 - 10/09/15 01:14 PM Re: 270 WSM [Re: ltsheets]
ChadTRG42 Offline
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Registered: 09/16/09
Posts: 11492
Loc: Lewisville, TX
.050" is fine. Work at max or just beyond max, and it will shoot the best.
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#5969902 - 10/09/15 06:40 PM Re: 270 WSM [Re: ltsheets]
ltsheets Offline
Tracker

Registered: 11/12/11
Posts: 633
Thanks Chad

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#5970082 - 10/09/15 09:13 PM Re: 270 WSM [Re: ltsheets]
ChadTRG42 Offline
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Registered: 09/16/09
Posts: 11492
Loc: Lewisville, TX
The WSM cases do NOT like to be reduced.
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#5970155 - 10/09/15 10:39 PM Re: 270 WSM [Re: ltsheets]
ltsheets Offline
Tracker

Registered: 11/12/11
Posts: 633
Reduced??

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#5970604 - 10/10/15 11:29 AM Re: 270 WSM [Re: ltsheets]
ChadTRG42 Offline
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Registered: 09/16/09
Posts: 11492
Loc: Lewisville, TX
Keep it near max loads. When you reduce the loads less than max, I couldn't get them to shoot well.
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#5971048 - 10/10/15 06:52 PM Re: 270 WSM [Re: ltsheets]
ltsheets Offline
Tracker

Registered: 11/12/11
Posts: 633
Ah gotcha.

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#5975954 - 10/13/15 05:39 PM Re: 270 WSM [Re: ltsheets]
cullbuck Offline
Woodsman

Registered: 02/03/08
Posts: 175
I shoot the 140 AB under 65 gr. RL-22. This load shoots better than I can hold and leaves most everything it hits dead in the road.

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#5979282 - 10/15/15 03:55 PM Re: 270 WSM [Re: ltsheets]
ltsheets Offline
Tracker

Registered: 11/12/11
Posts: 633
Found some RL 17 today too that I might try alongside the H1000. Anyone have any load data for the RL17? I can't find any published data anywhere for RL17 with 140gr bullets in the 270wsm.

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#5979322 - 10/15/15 04:15 PM Re: 270 WSM [Re: ltsheets]
ChadTRG42 Offline
THF Celebrity

Registered: 09/16/09
Posts: 11492
Loc: Lewisville, TX
I'd stay away from the R17. It is a double base powder, and is REALLY temp sensitive, much more so than your IMR 4350 loads.
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#5979329 - 10/15/15 04:19 PM Re: 270 WSM [Re: ltsheets]
ltsheets Offline
Tracker

Registered: 11/12/11
Posts: 633
Well it sucks to hear that. I thought RL17 was supposed to be more temp stable than RL22 which I was initially gonna try alongside H1000. Is H1000 temp sensative? I wasn't as concerned with max velocity for my berger loads but for the 140ABs I want to get as much velocity as I can get out of them.

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#5980177 - 10/16/15 08:06 AM Re: 270 WSM [Re: ltsheets]
ChadTRG42 Offline
THF Celebrity

Registered: 09/16/09
Posts: 11492
Loc: Lewisville, TX
Hodgdon has their extreme line of powders that are very temp stable. Alliant also has their line of Power Pro series powders that are temp stable. IMR has their line of Enduron powders that are temp stable. I have been using the new 7977 powder and like it a lot. It's slightly slower burning than H1000. Compare the one's in your manual to the similar burn rate of the new one's and you can use that data.

http://www.hodgdon.com/extreme.html

http://www.alliantpowder.com/products/rifle.aspx

http://www.imrpowder.com/rifle.html
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#5980266 - 10/16/15 09:02 AM Re: 270 WSM [Re: ltsheets]
Whiptail Offline
Woodsman

Registered: 10/13/13
Posts: 134

I've found the winchester WSM brass I got is very thick and hard. As a result I had problems with necks splitting after shooting them the first time.

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#5980361 - 10/16/15 10:01 AM Re: 270 WSM [Re: ltsheets]
ChadTRG42 Offline
THF Celebrity

Registered: 09/16/09
Posts: 11492
Loc: Lewisville, TX
What caliber whiptail (which WSM round)? With the aggressive WSM case that has a short and fat powder column and 65-70 grains pf powder getting pushed through, the necks can get work hardened very quick. So annealing the cases would be needed. The smaller the opening, the quicker the work hardening.
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