JES rebore to 358 win

[GARD72977]

I have a 7-08 Highpower match rifle that I want to re-bore to a cast friendly cartridge.

I would like some feedback from people that have a JES rebore to 358win. What Twist and how many groves did you get. Are there any options I should know about? Any thing you would do different?

I made a post about this about a year ago and decided to wait. Have not done much with the gun. I think it would be one of my favorite rifles in a 358win

[GARD72977]

210872

Here is a pic of the gun. It is in excellent condition but out dated. Im ready to get some use out of it

[Adam20]

I had jes do one in .358 win. With 3 grove 1-14 twist. I shoot the noe clone 35-200fp. I have no complaints would not change a thing.

[Oklahoma Rebel]

I think that your current cartridge/chamber is longer than the 358, because I think yours is based on the 8mm mauser,. I could be wrong though.... any one out there that can help him, and let me know if I am wrong? is the 7mm-08 a belted cartridge? I haven't ever had much interest in the smaller calibers, save the 22lr, 22mag, and hornet, so I cant remember the last time I read about the 7mm's. good luck!-Travis

[KMac]

I think that your current cartridge/chamber is longer than the 358, because I think yours is based on the 8mm mauser,. I could be wrong though.... any one out there that can help him, and let me know if I am wrong? is the 7mm-08 a belted cartridge? I haven't ever had much interest in the smaller calibers, save the 22lr, 22mag, and hornet, so I cant remember the last time I read about the 7mm's. good luck!-Travis
The 7mm-08 is just a 308 necked down to 7mm so it should work fine since the 358 is just a necked up 308.

[Oklahoma Rebel]

oh, that's right, thanks for jogging the memory!

[Texas by God]

I remember you. I advised you not to change that target rifle. But now I'm thinking a .358 re bore of that rifle would be a neat cast boolit test platform. OkRebel the 7-08 is in the .243 to .358 family.(.308 Win based)

[bruce drake]

Oh that's a good match rifle setup. You sure you want to change it's setup also?

[GARD72977]

I just have no intrest in the 7-08. If I get competitive it would be in the Service rifle class. There is a 100yd match not far from me that may be fun with cast bullets. The larger caliber may make up for less accurate bullet.

In 358win as a cast bullet shooter the throat shoud last long after im gone. If not change to original magazine parts and chamber for 35 Wheelen. The feed ramp is really nice. I hope it keeps the lead bullet from being damaged.

I just need to decide what twist and which rifling I want. Im hoping for a good accurate load with a plain base bullet. Dont mind shooting GC bullets. A light load with the 27"bbl should be quite enough to use without hearing protection.

[GARD72977]

210882

Here is a pic of the feed ramp. It takes up the difference in length of the 30-06 cartridge. I think there is enough room to load out to 2.9 maybe a little more.

[GARD72977]

Alright I seem to posting a lot tonight. I promis im not drunk!

Doing some research and thinking 1/11 or 1/12 twist. Im wanting to shoot heavy 250-310gr bullets. Since the velocity will be slower maybe the 1/11 twist would work

[Smoke4320]

I had jes do one in .358 win. With 3 grove 1-14 twist. I shoot the noe clone 35-200fp. I have no complaints would not change a thing.
I had the exact same thing done on a rem 700
Its a great shooter

[Oklahoma Rebel]

one thing is for sure, it sure is a pretty nice looking rifle! since it is a target rifle is it pretty heavy? are you going to be hunting with it too or just shooting paper?

[Texas by God]

I had the exact same thing done on a rem 700
Its a great shooterSame here!

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[GARD72977]

I dont hunt. It will be used target shooting only. Nothing really official.

[bruce drake]

Here is a Cast Boolit forum thread on that very question regarding barrel twist rate for a 358 Win caliber rifle.

http://castboolits.gunloads.com/showthread.php?170723-Best-twist-for-358-Win

[30calflash]

I think the 358 would be neat and different for a match rifle, but you may want to check the sponsor's rules on caliber. Most go by NRA or CMP regs and a 358 may not correspond to their match. Hard to score as they used to use a 30 caliber guage for scoring close hits.

Some clubs more lenient, wouldn't care what is used as long as it's safe.

Wouldn't want you to spend the time an $$$ if you can't run it where you want.

[GARD72977]

Highpower rules allow up to 35 cal. Im not doing this to make a match rifle. Think of this as improving a practice rifle able to shoot cheap cast boolits out to 200yds.

Im considering 1/11 twist. Im wanting to shoot 250gr+ PB boolits at 1250-1500fps. The lower velocity will need a slightly faster twist.

I may try a 100yd only match for fun. Im not intrested in campaigning this rifle as 7-08 or 358.

I really just want to shoot this gun offhamd. I may try all the Highpower positions.

[ballistim]

I had jes do one in .358 win. With 3 grove 1-14 twist. I shoot the noe clone 35-200fp. I have no complaints would not change a thing.

Same with mine, a Marlin re-bore that shoots cast great, 100% satisfied with it using the same NOE version of the RCBS 35-200-FN.


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[35 shooter]

Highpower rules allow up to 35 cal. Im not doing this to make a match rifle. Think of this as improving a practice rifle able to shoot cheap cast boolits out to 200yds.

Im considering 1/11 twist. Im wanting to shoot 250gr+ PB boolits at 1250-1500fps. The lower velocity will need a slightly faster twist.

I may try a 100yd only match for fun. Im not intrested in campaigning this rifle as 7-08 or 358.

I really just want to shoot this gun offhamd. I may try all the Highpower positions.

Not a 358, but i shoot the noe360009(358009 clone) at 280 gr. pb with 12 gr. of unique with no filler in my 1/14 twist 35 whelen encore.

Unweighed boolits go 1.5" and less @ 100 yds. Weighed boolits will clover leaf or stay 1" or less at the same range.
Speed is 1275 fps. Shoots the same boolit with the same accuracy at 2200 fps. plus.

Haven't tried any 250 gr., but it will do just as well with 200 and 230 gr. boolits.
Just letting you know the the 1/14 twist can handle the heavier boolits in 35 cal. just fine.

However, if your going to concentrate from 250 to 300 gr. boolits and lighter loads, i think your choice of 1/11 or 1/12 is a good one....also for heavy loads with the heavy weights.

I think you'll really like that re-bore for what your intending to do. Recoil with the 1275 fps. load is almost zero with that 280 gr. boolit, but still digs quite a hole in a red clay and gravel bank at the 100 yd. mark lol.

Good luck with your .358 project![smilie=s:

[GARD72977]

Here is a pic of the Magazine out of the gun. Overall length is 2.88 now. It would be easy to mill the spacer to 3.15 overall length.

I have 3 molds in mind ,360-294-RN,
360-280-SP and 360-310-FN. These should work well within the 3.15 OAL. I would like to have the molds in hand and decide on exact length to have the throat cut.

I think the 1/11 twist would work for these bullets from 1000 to 1700 fps

[Kraschenbirn]

I'm sure glad this topic came back to the top because I was just about to open a similar thread. I've got an M700 with a 24" #3 profile McGowan barrel that was put together for me by old Art, himself, back in 1984. I shot the gun in competition off and on for close to ten years and, after that, it sat in the safe for another fifteen, or so, until I became (re)involved with shooting cast. Near as I can figure, I've put something over 8,000 rounds through that tube and it's beginning to show some serious throat erosion. I was close to a decision on reboring to .358 Win and the info from this thread pretty much sealed the deal. Thanks to everyone who's contributed to this thread for the good information.

Bill

[bluejay75]

Is there enough meat on a Remington 700 youth 20 inch 243 barrel to rebore to 358? If so...I think that will be my 2018 gun resurrection.

[Texas by God]

Is there enough meat on a Remington 700 youth 20 inch 243 barrel to rebore to 358? If so...I think that will be my 2018 gun resurrection.Hold a .357" bullet up to the muzzle. That will tell you quick. My 22" Rem .243 rebored perfectly to .358 and I bet your 20" will as well.

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[Adam20]

I call jes the other day inquiring about another rebore Remington model 7 to .358 current muzzle measured .550 he said that works. I should have asked what his minimum is.