Thread: Short barrel magnum calibres?

Righto, Not looking for do or don't rather interested in first hand experience. Who has or had a short barreled magnum talking 20 inches or less plus suppressor and how did you rate it? What calibre and speeds were you getting out of it and what powders were you using?

Currently toying with the idea of chopping the rem mag down but don't really want to cut into into the fluting or getting a WSM and chopping to 18 inches. So hit us with what you have got.

Bro look up Doc Watson on Youtube, he has a chopped remmag review.

Ive got a 20" 300saum. Its a very efficient case. 3k with 168grn. 3.170k with 150grn. N550 & R17. For my 50-500 yd hunting with the 168 NBT its hard to beat.

Also a 22" 270WSM. 129grn Barnes LRX 3.330k with R19, 3.250k with R26

There're plenty of 7saum around with 20" getting 2.9k with 160 grn. My 22" is 3k.

I recall Greg Duley saying you can take a 7mmRM back to 20" ok.

I've got a 300wsm 18 inches. Tikka t3 with dpt with stainless blast baffle. Not huge speeds but I'm happy the game I have shot with it have dropped on the spot mostly. 168 amax doing 2850. The only thing I don't like it the muzzle jump even with the suppressor I can't spot shots with it but it doesn't bother me too much we try to film our shots when we can now so we can just watch that and see if I missed haha

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Brothers has a tikka 300 wsm, 21 inch suppressed, 2975 168 amax. Loves it. Leaves his 7mm08 at home now. I’ve got a 20 inch saum. Suppressed. Can get around 2850 with 162 eld x. Goes good.
I still like smaller calibres better though!

Cam7mm08 has a 15” 300wsm and shoots quite lite bullets, 130ish I think. He loves it.

Interesting thread. I have a hankering for a 7 SAUM with a shortish barrel (20” or so). What’s the story with that set up and 162s?

Have a 20 inch 300WSM but due to the lock down not tested it yet since it was cut down. With the 24 inch barrel however the 200gn Hornady Precision hunter ammo was 2830 (magnopeed)
I'm hoping for similar velocities with 175-180gn projectiles with the shorter barrel

7 saum works well. 7 08 on steroids. 162 eld x or m 2850-2900. I think reloder 23 or 26 are good powders. I’ve used 23 to get to 2850 with 59 grains. Reloder 26 may be better I’ve heard. 59 grains 2213 gets me 2750fps. Used out to 500yards ok. Nothing walks away if hit square.

Begs the question- what are you trying to achieve? What distance do you want to shoot game ? What sort of hunting are you going to use this for ? 300 WSM, 300 SAUM or 7mm SAUM or 284 all tick a lot of boxes. Personally I would not shorten any of these less than 20in. If you chop your RM too short you burn a lot of powder for little or no speed gain over the smaller cartridges. How’s your tolerance for recoil ? If you are recoil shy you’d be better off going 7mm than 30cal.

Model 7 saum cut back to 17” and suppressed, so ends up same length. I get 2730+/- with mag fit 168vld and v100 powder. A lot more handy in the bush with enough legs for 5 - 600. I like it.
Cheers

Just chopped my tikka 7mm rem mag down to 21”. I would have gone 20” but chose 21” as it stopped just before the factory flutes on my barrel. Just done a load running the 162ELD-X at 2950fps.

My mate has one at 20” running 162 ELD-X at 2970fps using the same load.

Interesting, bit of food for thought and plenty of time to think .
Sounds like the general consensus is SAUM or 300wsm for shorter barreled magnums.

Anyone know why has the 7mm WSM has never taken off in NZ? Seems like the WSM cases are more economic then then the likes of the Rem Mag in a shorter barrel so i would have thought the 7mm WSM would also be a good candidate for a chop aswell.


Chainsaw, You know what its like you always want an all round rifle for everything from 5m-600m, Sika, Rusa and Reds mainly. Bullet speeds not really an issue, id be happy as long as it was pushing 2800+ because that gets me out to 500 odd.

Stagstalker, thats exactly the problem i have, to cut my rem mag to less then 21 inches and im into the fluting which i dont want to do and ideally id like to cut the rifle a little bit shorter then 21. Maybe18 or 19 would be ideal for my style of hunting.

I should have mentioned too, before my mates 20” rem mag he had an 18” 7mmsaum. That ran the 168VLD at 2850fps.

I’ve always though a 7mm WSM would be cool too, it just seems to be very uncommon and probably hard to come by components? A rifle I want to build is a 7mmsaum on a remington 700 short action with a 20” barrel.

Here is the proposed speeds to expect from Greg Duleys 7mm superpig article.

@stagstalker which issue is that article in?

So if I had a Rem 700 in 7-08 in a carbon stock sitting around doing nothing can it just be reamed out to 7mmsaum and mag box tweaked?