I don't have any wildcatting experience but was considering rebarreling a 300SAUM to a 350 Rem Mag and then thought what if the 300 SAUM were necked up to a 350. What do you pros think?

i think the wsm to 35 is called the wapati, and jamison did a 35 in his

jeffe

The WSM to 35cal is called the 35Sambar
I think the RSAUM to 35cal is a bloody good idea, particularly in the Model7 actions withtheir short magazine boxes.
Cheers...
Con

I was just thinking the 300SAUM is fatter than the 350 Rem Mag and should outperform it. It should be easy for Redding to modify my bushing die and all the SAUM brass I have would neck up easily. The only problem is getting a reamer for the new barrel.

the 375 ruger brass with its case design and minimum taper will be the best...the 2.1" version will have the same capacity as the wsm case and the 2.0 version the same as the saum without the rebate...i like the idea of a 2.1" 375 to make the 375 ruger short capable of 300 gr @ 2400 (all you need) yes it will duplicate the 376 steyr but in a short action.

a 350 rem mag conversion will be easy...

The 350 Rem Mag would certainly be easier with nothing to modify except adding a new barrel.

But a 350SAUM or the 35/300WSM should be the equivelent of a 358 Norma in a short action.

Thanks for the Comments

.........Dwight ; My thots exactly.. Would you [ pretty Please make up this rifle and report on it ... I got rid of my 350 Rem Mag. , Ruger 77 mk 2 because I didn,t like the 16 " twist barrel .. But if I stumble onto another short mag action Ruger I,m going to send it to some one who will put a 10 or 12 " twist 358 barrel on it ... The chambering can be done with 2 reamers . A 300 Short RUM and a 35 whelan for the neck and leade.... If it keeps with the short mag reality of same velocity with less powder, it should go as fast as the Norma.........

That is the part that I don't know anything about. What tools to use in the process since I am not a smith. I did a search on Google and found a site that had reamers for a 35/300WSM which may hold a little more powder.
I was thinking of away to use all my existing brass and dies. It seems as though the die could just be bored out a little and install larger bushings or maybe Redding could make a die just as cheap.
All my rifles weigh in at 8.5 to 9 lbs and the Sendero has a decelarator pad so it should comfortably once I decide between the 350SAUM or the 350 Rem Mag. May as well consider the WSM one also.
I need some more smiths to chime in and steer me along.

.......Because I don,t feel adequetely armed with under 4000 ft lbs of for a medium bore rifle and I have already pushed the 350 rem as hard as I plan on and it only yeilded 3600 ft lbs.....I think the short rum or wsm case is the way to go.. If a short action is the base of the rifle......The short rum has the easier chambering brass and nearly the case capacity.....CH4D has the dies ... With a 300 srum finishing reamer with removable pilot and a 35 whelan reamer for the neck and leade the chamber can be cut... I would start with a long barrel and go from there...With a light weight 26" barrel in 35 cal it should beat 2700 fps with a 250 gr bullet........

A 250 at 2700 would be a strong thumper for sure. I will save your tooling ideas for the project. I first need to burn a couple hundred rounds in the old barrel before tossing it or just save it for a tomato stake.
If I neck the 300SAUM up will the neck lengthen or get shorter?

......The The neck gets a little longer but the 300 Short RUM headspace guage will still work...as the beginning of the shoulder stays in the same place...........If I wasn,t so stupid computer wise I would post some pics....I need to take a computer course................With a skelotonized ruger action and a buggy whip 20 " barrel' start with 22 and back up if the velocity is there .......A compact 2-7x Burris scope and a 1 1/2 lb fiberglass stock .. It would be a perfect ,,most of the world rifle that actually had authority on large game ..

I have been doing some load development for a friend that just had a 358 WSM built. It is a simple process of necking up 325 WSM brass to 358. So far this rifle is very impressive. Getting 3000 fps + with a 225 Nosler Partition with very good accuracy. He is planning on taking it to Africa when we head to SA in August.

Dwight,
Before getting really excited, check your magazine box length as if your rifle's a Remington your more than likely going to run into trouble with your COL with certain projectiles. I'm sending my Ruger MkII S/S 350RemMag off to the 'smith to extend its magazine box to at least 2.95" so I can seat and use the 310gr Woodleigh. If I seat them at 2.9" as per the factory box, they virtually fall into the case . Same problem exists with some of the longer 250gr projectiles. The Remington rifles have magazine boxes even shorter , so just be 100% sure you can use the projectiles you want to use. Might be worth making some dummies and seeing how they fit.
Cheers...
Con

Thanks for the mag box tip. The short action boxes don't have much room.