alf
Silver $$ Contributor
Short action 7mm with Mag bolt face using 300 WSM brass.
- Thread starter Patriot308
- Start date
here’s how I run my 7SAUM
Mag length (2.95) 175smk’s for 0-1200 ish yards for fast transitions and follow up shots.
Absolutely wicked on far yonder coyotes!!!! Lol
3.15” oal with 190LRHT or 183smk’s single feed for 1200 and beyond.
The 183 and 190 are actually really impressive past 2k if you have a location with decent spotting.
If I was going to design a cartridge I’d take the 300 WSM, shorten it .1 or so and shorten the body .15 or so to lengthen the neck and run about a .180-.200 freebore
It would look like 300norma improved or 375 enabler.
I don’t know if you’re familiar with what Barnes has done with the .308 212gr Boar Rider bullets, if bullet makers would develop this style bullet, it could be a great option for when you need a better BC without a complete rebuild. What you’re doing with your set up is about exactly what I am looking for. Thanks for your input.
I think I will go with the 7 SAUM, and run 175s that will run in my $400 dollars worth of mags, single feed longer rounds when I go out farther ranges, like one of the other user mentioned.
You can wait like me for the 7 BSM. 7 mm wildcat based on 300WSM with 7SAUM capacity. Supposed to be released some time this year. I don’t do Facebook but you can do a search on Bryan Blake’s paige
Sandstorm
Gold $$ Contributor
I know several working in that direction these days...It shoots small as Ive shot my friends rifle.
Any general specifics of it?
Pushed back shoulder?
Tucker65
Gold $$ Contributor
The Bat Vesper action from Unknown Munitions will get you 3.150 COAL when using their bottom metal and mag. That should let a guy seat the heavy bullets out plenty far and still feed from a mag if needed.
I've actually opened up the load port on Gunwerks short action to accept this setup on a 7 saum and it worked out great.
I've actually opened up the load port on Gunwerks short action to accept this setup on a 7 saum and it worked out great.
I’ve only seen pictures of the cases at this point and read a little of what FB will allow without an account; but yes, the shoulders are pushed back and flattened to 40. Neck is shortened as well.
Is there anybody using a 6.8 Western necked to 7mm, I think the used a shortened WSM to create it, better bullet selection with 7mm.
300 WSM
nakneker
Gold $$ Contributor
Sounds like a lot of work. I get wanting to use your pile of brass but you’re gonna spend a lot of time and effort to make this project what you want. I shoot a 7Saum, great cartridge, I’m having three 7Saum improved rifles being built as we speak, one for me and two for friends. I bought plenty of ADG brass first time I could after not being able to get anything but Norma for years. Use your action, use your mags, buy some new brass and go.
It will get you out to a mile but if your really wanting to shoot a mile, if that’s the purpose of this project I’d look at a long action and use one of the big 7s with high BC bullets, I think you’d be happier but that’s just my opinion. I’ve had a few custom rifles over the years that required a lot of work to adapt components I had on hand, I came to the conclusion it’s easier to buy the closest thing to what you need and start there. Time is money too, that being said I understand tinkering in the gun room and playing around is fun too.
It will get you out to a mile but if your really wanting to shoot a mile, if that’s the purpose of this project I’d look at a long action and use one of the big 7s with high BC bullets, I think you’d be happier but that’s just my opinion. I’ve had a few custom rifles over the years that required a lot of work to adapt components I had on hand, I came to the conclusion it’s easier to buy the closest thing to what you need and start there. Time is money too, that being said I understand tinkering in the gun room and playing around is fun too.
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Sandstorm
Gold $$ Contributor
Thank you..I knew my memory was faulty.
Actually my friend said it was not a lot of work at all..pretty much plug and play he said.
FL size 300 WSM brass in the 7 BSM FL die, all work is then done for forming. Fully formed, 40 degree shoulder that headspaces perfectly.
And the shorter case will work with magazines better than a 7/300WSM or 7 saum with 180 or heavier.
Can't you just single feed it and seat em long? I have single shot sleds for every rifle. Only knuckle draggers use magazines to shoot ELR lol
I gain nothing at this time loading them long, the chamber in my 300 is short cut for factory length round.
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