358 winchester and BM8208

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358 winchester and BM8208

Post by bigpete » 17 Nov 2019, 7:24 am

Hmmm.... I'm currently looking at buying BM8208 largely because it seems to be the go to powder in my 35 Whelan. I know most people like to use a specific powder for a specific cartridge,but I've gotten away with using 2206H in everything I own for years now,so I'm intending to try to do the same with 8208.
Now,researching the ADI manual,it has data for my 22/250,308,35 Whelan, and 45/70....but not for my 358 winchester. I kinda find that odd,as I can find data using BM8208 in the 308 cartridge right up to 208gn pills,which would lead me to believe it really should be fine in my 358 with 180gn pills.
So....should I try BM8208 in the 358 using the 308 load data ? In theory it should produce less chamber pressure due to the increase in bore size. Has anyone tried ?
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Re: 358 winchester and BM8208

Post by SCJ429 » 17 Nov 2019, 7:43 am

I find Nosler is usually right on the money for picking a powder and for a 225 grain bullet they say RL7 which is close to 2207 in burn rate. Unfortunately for you it is a fair way from 8208.
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Re: 358 winchester and BM8208

Post by bigrich » 17 Nov 2019, 8:03 am

bigpete wrote:Hmmm.... I'm currently looking at buying BM8208 largely because it seems to be the go to powder in my 35 Whelan. I know most people like to use a specific powder for a specific cartridge,but I've gotten away with using 2206H in everything I own for years now,so I'm intending to try to do the same with 8208.
Now,researching the ADI manual,it has data for my 22/250,308,35 Whelan, and 45/70....but not for my 358 winchester. I kinda find that odd,as I can find data using BM8208 in the 308 cartridge right up to 208gn pills,which would lead me to believe it really should be fine in my 358 with 180gn pills.
So....should I try BM8208 in the 358 using the 308 load data ? In theory it should produce less chamber pressure due to the increase in bore size. Has anyone tried ?


tricky question pete ,according to the ADI load listing , with other powders listed ,the 358 takes a few grains more than the 308 for the same bullet weight cause as you say, the 358 bore size works to decrease preasure . by that logic going by my load manual, the max 308 load should be about the start load for 358 . i'd tread very carefully but pete . maybe someone on this forum has access to one of those load calculating programs :unknown: best of luck with it pete :thumbsup:
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Re: 358 winchester and BM8208

Post by bigpete » 17 Nov 2019, 8:17 am

Yeah,I've got a bloke on messenger with Quickload,and I've emailed ADI. But I always like to put it out there
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Re: 358 winchester and BM8208

Post by bigrich » 17 Nov 2019, 8:35 am

bigpete wrote:Yeah,I've got a bloke on messenger with Quickload,and I've emailed ADI. But I always like to put it out there


a fella i know emailed ADI for load advice and they were very helpful . how do you find the 35 whelen in it's real world uses in the paddock ? is it as flexable with different game weights ( pistol bullets ? ) as i'm thinking it is ? i've head accuracy is very good as well . any feedback pete ? :thumbsup:
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Re: 358 winchester and BM8208

Post by bigpete » 17 Nov 2019, 9:35 am

So far I love it,but bear in mind it's new to me too. And I'm shooting it with open sights....and I've only used one pill in it,the Sierra 200gn round nose ....
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Re: 358 winchester and BM8208

Post by bigrich » 17 Nov 2019, 9:43 am

bigpete wrote:So far I love it,but bear in mind it's new to me too. And I'm shooting it with open sights....and I've only used one pill in it,the Sierra 200gn round nose ....


That would flatten anything in close I’ll bet :D
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Re: 358 winchester and BM8208

Post by bigpete » 17 Nov 2019, 10:03 am

Depends if you call 200m close....
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Re: 358 winchester and BM8208

Post by bigrich » 17 Nov 2019, 10:29 am

bigpete wrote:Depends if you call 200m close....


What did you hit with it ? I think that particular bullet is intended as a “Woods “ bullet in 35 rem isn’t it ?
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Re: 358 winchester and BM8208

Post by bigpete » 17 Nov 2019, 10:34 am

None of your business lol.
But if you reckon you can't shoot a round nose pills out to 200m....well,I'll let you believe that all you want
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Re: 358 winchester and BM8208

Post by bigrich » 17 Nov 2019, 10:50 am

bigpete wrote:None of your business lol.
But if you reckon you can't shoot a round nose pills out to 200m....well,I'll let you believe that all you want


I’m not saying anything can’t be done, just trying to learn from someone who has more practical experiences than myself. Especially about those lovely 358 bores ....
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Re: 358 winchester and BM8208

Post by bigpete » 17 Nov 2019, 11:00 am

Accurate is accurate. Now,beyond 200m....maybe....I can see there being a slight problem. Maybe. And definitely beyond 500m. But 200m and under....your pretty much still relying on velocity to control trajectory. And these pills are plenty fast enough....although they will be faster with 8208
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