Sizing up 7 WSM brass too 300WSM??

[Far North Hunter]

I have done numerous down sizing of brass, however very little experience going the other way. wondering if it's possible to take 7 WSM cases up to 300WSM. I have 80 pieces of Winchester brass I'd like try make work. Thinking of first using 21st Century expander, possibly annealing, and then running them through a 300 WSM bushing die (no bushing) to move the shoulder. Again expanding, annealing, trimming if necessary and neck turning. Lots of gyrations but I've got time. Anyone gone down this same rabbit hole?

 

[sedancowboy]

I would try to trade your 7 WSM for 300 WSM. First the 7WSM is longer at the datam line. So you would have to push the shoulder back which will not be easy. The 7WSM brass is much more valuable than 300 WSM so I would think a trade would be easy.

 

[Hunt_4life]

You will have a hell of a time if you can even to it. The shoulder is 90 thou longer on 7wsm I believe. I would just get some 300 wsm brass.

 

[Rflshootr]

You will have a hell of a time if you can even to it. The shoulder is 90 thou longer on 7wsm I believe. I would just get some 300 wsm brass.

.037 longer

 

[Hunt_4life]

.037 longer

Thanks for the correction. Now I know. Even with 37 thou long that will be a huge pita.

 

[Flackin Hoover]

I would be interested in your 7wsm brass, what make is it? what would you want for it?

 

[ManiacalArms]

270 WSM and 300 are the same 7 WSM is different. You could do it with the 270WSM

 

[Far North Hunter]

I would be interested in your 7wsm brass, what make is it? what would you want for it?

The 80 rounds I mentioned were Winchester 150 gr loaded rounds. I went to pull the bullets, they are crimped and I'll destroy the bullets pulling them. Albeit I went looking and have 100 rounds of new unfired Winchester brass. I'd sell for $150 Tyd.

 

[Flackin Hoover]

The 80 rounds I mentioned were Winchester 150 gr loaded rounds. I went to pull the bullets, they are crimped and I'll destroy the bullets pulling them. Albeit I went looking and have 100 rounds of new unfired Winchester brass. I'd sell for $150 T

 

[Flackin Hoover]

The 80 rounds I mentioned were Winchester 150 gr loaded rounds. I went to pull the bullets, they are crimped and I'll destroy the bullets pulling them. Albeit I went looking and have 100 rounds of new unfired Winchester brass. I'd sell for $150 Tyd.

Far North Hunter, I will take the new 100 rds of brass. What is the procedure for this on this forum?

 

[Far North Hunter]

Far North Hunter, I will take the new 100 rds of brass. What is the procedure for this on this forum?

Send me a text number and I'll get back with you on details.

 

[Flackin Hoover]

719 989 8439