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Old 05-20-2019, 11:09 AM
hersh5317
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Would you rather....cartridge choice



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300 Blackout (Rimmed?) vs 357 Magnum

I know there are a lot of good cartridges, platforms, and opinions on a general use kick around carbine. I am looking for your opinion on two cartridges specifically in a single shot platform and why you would choose one over the other if you had to. I have my reasons why both would work well, and they are the two that fit the closest to what I want to do with this carbine. No other cartridge chamberings, no other platforms. A 357 lever or 300 Blk AR pistol would be fun and more practical than a single shot, but not what I want. If you have one you are literally giving away, I will take good care of it though.

Both can be downloaded, have a variety of projectiles (cast and jacketed, light or heavy) that cover a wide range of intended targets, have brass that is or can be made cheap, use small primers, can handle deer to 150 yards +/- a few, and can be found at most places you can buy ammo if needed.

Neither uses a lot of powder, recoils much, or takes up a lot of space.
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Old 05-20-2019, 01:44 PM
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The .357 will deliver a lot more punch, but the 300 BLK wins on range and a slight edge in accuracy. Either one will make a good hog/deer gun at that 150 yard distance. I have a lever action 357 that is dead on accurate at 100 yards with iron sights, will take down a 200 lb deer or 100 lb hog with no problem and has the advantage that you can shoot .38 specials very economically for fun plinking. I have a bolt action 7.62X39 that is about on par with the 300 BLK in terms of performance which I also like a lot. I don't think you can go wrong with either one.
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Old 05-20-2019, 02:04 PM
scooter22
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Seeing your comparing the two did you look at the new Winchester 350. Legend? Myself I'm good with the .357Mag in a Marlin1894C.

https://www.americanhunter.org/artic...er-350-legend/

Interesting cartridge. But all the hype. Fastes STRAIGHT WALLED case. Have they looked at the .444 Marlin?

Last edited by scooter22; 05-20-2019 at 02:11 PM.
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Old 05-20-2019, 02:34 PM
hersh5317
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350 Legend still < 357 Remington Maximum! I am not asking about either of them though. The "Legend" is still too new to predict long term availability on store shelves.
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Old 05-20-2019, 02:37 PM
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Quote:
Originally Posted by hersh5317 View Post
300 Blackout (Rimmed?) vs 357 Magnum

I am looking for your opinion on two cartridges specifically in a single shot platform and why you would choose one over the other if you had to.
I use the 357 Magnum in a single shot Contender , have owned it for 30 years now. Add to that I have 357 revolvers and lever actions too. The revolver straight wall case is easy to load and 357 bullets can bought for less than most 30 cal bullets.

So the 357 for me but the 300 Blackout seems like an interesting cartridge.
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Old 05-20-2019, 03:06 PM
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I stay away from the 300 Blackout.
I know you are looking at a single shot, but I don’t want a 300 Blackout anywhere near a 223 AR-15.

They normally wouldn’t chamber in a bolt action or single shot .223, but they can and will chamber in an AR platform .223. There is enough force with the buffer spring to force the bullet back into the case and form the case to fit the .223 chamber. When the trigger is pulled bad mojo happens. I have actually seen a .30 cal bullet make out of a .223 barrel without blowing the gun up. That is not the norm. You should see how long that .30 caliber extruded bullet was.

For my friends that do have and use the 300 Blackout, I recommend red anodized mags to help keep the ammo separate.

For me, the .357 is the way to go with all the choices of ammo and compatible firearms.
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Old 05-21-2019, 11:06 AM
hersh5317
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M2HB, I believe I have seen a photo of a 125gr swaged 223 bullet. Very scary.
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Old 05-21-2019, 11:50 AM
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I have an H&R Handi-rifle in .357 Max, but mostly shoot Mags out of it. It's no target rifle, but being able to shoot down-loaded .38 Sp on up to Max makes it a fun plinker that can be used for larger game (though I never have).

And I don't think I have a Lee Loader for 300 blk.
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Old 05-22-2019, 07:59 PM
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I really liked the 300 blackout in a Ruger ranch bolt rifle and found the cartridge to be a easy reload and shot moa at 100 yds. I had some problems with failure to feeds and fails to fire in the bolt action but I traded rifle because of those problems. I also have a scoped Smith and Wesson revolver that is quite accurate to 50 yds. If you want a caliber more ballistically equal to a 30/30 I would try a 300 blackout especially if you are doing single shot. I am looking at a cz 527 in the 300 BO caliber to replace the Ruger. Good luck with either they are both great calibers.
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Old 05-26-2019, 10:55 AM
Jeff H
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Funny these two should be compared.

I did the same comparison myself in a single-shot and made a lot of the same observations as the OP. My objective was a sort of "homestead rifle" I could use close-in for pests/vermin, or out to 100 yards or so for predators/deer.

The single-shot I used was a 300 BLK in the beginning and was rebored to 357 for stage two of the long experiment. Eventually it became a 357 Max and then back to 300 BLK with a new barrel. That was a Handi-Rifle, but I now use a Contender Carbine and actually prefer the Handi for this application, but the Contender is very nice. It also has a 357 Max and 30-30 barrel because narrowing it down to ONE perfect cartridge is tough. I will say that the 357 Mag is the perfect collection of compromises if not simply perfect.

Both use similar amounts of similar powders, as well as a similar weight range of bullets - for the way I was shooting both. I found the 300 BLK to be very much like having a 32-20 on hand with lighter cast bullets. I don't shoot any jacketed bullets except in the 223, so economizing on my supply of alloy is important.

I could just about write a couple or three chapters of a book on the experience shooting them both, but I'll spare everyone that and just say that I came to the conclusion (objectively) that the 357 was the winner for versatility for me. I don't know of a concealable revolver in the 300 BLK, and the 357 is available in everything from sub-one-pound five-shot pocket guns to grown-up hunting-class guns weighing almost as much as the tiny rifles I was shooting the 300 BLK and 357 mag in.

I sure did have a lot of fun with the 300 BLK and think it has a lot of merit outside its originally intended platform. Cheap brass, small appetite for powder, accurate, low-recoil, etc. Very fun and very practical. I used bullets ranging in weight from 113 grain to 170 grain in cast only. In the 357, I shoot from 125 grain to 200 grain cast. I've been casting and reloading for 50 years now and have picked apart a lot of little things that save time/cash and minimize tooling. Don't look at that as limiting, as it's been a fun, decades-long project in itself.

It was a tough call, but base pragmatism ruled in favor of the 357 for a small, light carbine. I can shoot 38s in it, trim split 357 brass to 38 if necessary, reloading for the 35s is slightly less complicated with their straight walls. I will note too that I don't necessarily share LOADS between 357 revolvers and carbines, but the commonality of components and tooling is economical and lighter to carry should you be forced to shove what you can into the car and head for higher/drier ground,... or ground that isn't moving under your feet, on fire or contaminated by an unfortunate "spill." You never know.
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Old 05-26-2019, 11:37 PM
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Quote:
Originally Posted by Jeff H View Post
It was a tough call, but base pragmatism ruled in favor of the 357 for a small, light carbine.
Indeed. I bought the .357 barrel for my H&R mainly because I have a lifetime supply of reloads, cast bullets and brass on hand that I also use in my revolvers.
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Old 05-26-2019, 11:44 PM
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357 because of easy availabilty of loaded ammo and easy to reload. You can through one of these in your bug out bag and load anywhere.
https://ads.midwayusa.com/product/66...hoCgdkQAvD_BwE
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Old 05-27-2019, 05:25 AM
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In a single shot, 357 Magnum hands down. BP loads, shotshells, uses 38 short colt, 38 s&w, 38 spl, and 357 magnum brass, options for cast and jacketed bullets are simply phenomenal, and the sheer volume of load data out there saves you a lot of work. Stock up on unique and 2400!
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Old 05-27-2019, 05:54 AM
fourbore
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I witness a very well shot deer hit with 357 run off. the shooter had it tracked by dogs the next day to recover a nice trophy buck. Bullet missed the spine by about 1/4 inch. Any capable round would have dropped it in its tracks. Even the 300 blackout would have done the job. I am at a total loss to get this fascination for deer hunting with absolute minimum capable caliber. But; if that is the goal, the 300 should do better.

On the other hand, for fun and versatility and excluding pushing the limits in the field, I would choose the 357. It is easy to reload and 38 spcl ammo is very low cost. Good brass for free at most shooting ranges or clubs. No brainier if you forget the deer idea.
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Old 05-27-2019, 07:49 PM
hersh5317
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I have the hand press, and everything I need for the 357. I just need a barrel. I am have pretty much decided on it. Thank you for all the replies.

I would really like to see a feature length article post on your 357 and 300 experiences, Jeff H.
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