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recoil/ 338-378

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recoil/ 338-378
« on: August 10, 2017, 07:57:07 PM »
Looking at a used accumark in 338-378 ported. Just wondering how bad the recoil is. Would be loading 200 to 225 grain bullets

Does anyone have any comparison's ?
Mike

Re: recoil/ 338-378
« Reply #1 on: August 10, 2017, 08:37:33 PM »
Mine recoils the same as my 7mm Remington magnum, but boy is it LOUD! I use double ear protection.
I love the smell of deer guts in the morning, it smells like...VICTORY!

Blackbear3

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Re: recoil/ 338-378
« Reply #2 on: August 10, 2017, 08:41:40 PM »
I just fired 15 rounds of 225 gr down my 340 Arroyo and found the recoil reasonable, I definitely don't need a brake on it. I would think a ported 338-378 would be similar, I'm sure one of the 338-378 owners will see your post and advise you to pick it up.
We stand for the Flag, and we kneel for the fallen!!!

Doug-NRA Life Member

Re: recoil/ 338-378
« Reply #3 on: August 10, 2017, 10:22:13 PM »
I use 250 gr bullets in mine, and with the break I find the recoil similar to the 300 Win mag 150 gr ammo. But I find it too loud, I only use the break when i'm testing loads, shooting off a bench. In the field hunting, it never has the break on.

Rob
cfp-223REM
accumark-223Rem
ultralite-240 Wby
synthetic-240 Wby
synthetic-257 Wby
ultralite-270 Wby
fibermark-270 Wby
accumark-270 Wby
accumark-7mm Wby
stainless-300 Wby
fibermark-300Wby
accumark-30378 Wby
fibermark-340 Wby
accumark-338378 Wby
custom-375 Wby
DGR-378 Wby
DGR-416 Wby
custom DGR-460 Wby

Re: recoil/ 338-378
« Reply #4 on: August 11, 2017, 08:43:20 AM »
I've never fired one without a muzzle brake. I have shot a customer's Accumark with the factory Accubrake and it is like a .30-06/7mm Mag recoil level.

Like the post above, I wore double hearing protection and I could feel the pressure wave move past me when I pulled the trigger.

I have a .338 Ultra Mag without a muzzle brake, but I would recommend a good recoil pad and a mercury recoil reducer - it takes the edge off the recoil.

The recoil is tolerable, but .338 magnums will never be one you'll enjoy shooting multiple boxes of ammunition off the bench. I use 250 grain Swift A-Frames and they hit with absolute authority and plenty fast enough.
JK

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Re: recoil/ 338-378
« Reply #5 on: August 11, 2017, 10:55:00 AM »
I hunt with a T/C Pro Hunter with a 338 win mag barrel now and have no problem, but the 338-378 uses like 30-35 more grains of powder.

I have always wanted one from the time I read Elmer Keith's book talking about its development, and using it. At one point I was thinking about building a custom in that caliber, now they are available from Weatherby.

7mm or 300 win mag recoil doesn't sound to bad, and yes I would be taking the brake off to hunt. Would be putting Zeiss scope with 4" eye relief on it
Mike

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Re: recoil/ 338-378
« Reply #6 on: August 11, 2017, 11:45:11 AM »
I hunt with a T/C Pro Hunter with a 338 win mag barrel now and have no problem, but the 338-378 uses like 30-35 more grains of powder.

I have always wanted one from the time I read Elmer Keith's book talking about its development, and using it. At one point I was thinking about building a custom in that caliber, now they are available from Weatherby.

7mm or 300 win mag recoil doesn't sound to bad, and yes I would be taking the brake off to hunt. Would be putting Zeiss scope with 4" eye relief on it
Sounds like you've decided to buy it!!!
We stand for the Flag, and we kneel for the fallen!!!

Doug-NRA Life Member

Re: recoil/ 338-378
« Reply #7 on: August 11, 2017, 11:49:39 AM »
Felt recoil has a lot to do with stock design and weight. My father has a custom Mauser 98 chambered in a .338 Win Mag that has TERRIBLE recoil...far worse than my .338 Ultra Mag. The older Ruger M77 Mk II with that black plastic, skeletonized stock in a .338 Win Mag recoils like a banshee!

My Remington 700 BDL .338 Ultra Mag with a Pachmayr Decelerator pad and one mercury tube in the buttstock isn't too bad. I used to shoot it "as is" stock from Remington, but those two minor changes made a world of difference.

Your Zeiss with 4" of eye relief should be fine. I have a Leupold VX3 3.5-10X, 40mm scope on mine. The rifle "grazed" my eyebrow once (just a nick with a drop or two of blood, but no stitches). I had it cranked up on 10X shooting at prairie dogs. I took it as the rifle telling me not to be be stupid.
JK

Re: recoil/ 338-378
« Reply #8 on: August 11, 2017, 11:54:28 AM »
I have one of the first 338-378 Accumarks made that I have a Leupold 4x12x40 Vari-XII on and am a huge fan of it.  The recoil isn't bad with the break, similar to a .338 Winchester Magnum, and it's a sudden hard push rather than a sharp snap.  Another thing I will tell you is when you're shooting off a bench with the break on you're going to get a puff of air blown into your face when you shoot because of the break.  The way to avoid or minimize this is to have the break beyond the edge of the bench top.  This puff of wind is strong and takes a bit of getting use to.  It's also strong enough to knock over a box of .338-378 loaded ammo if you have it standing up on the bench.  People standing behind you within about three feet will also feel the puff of air when you shoot.  The first time I shot mine my Dad was standing about three feet behind me and he said he felt the "blast".  I can't explain this any better since I'm the only person who's ever shot my rifle so I don't have any personal experience with this. 

As for the burning more powder than a .338 Winchester Magnum or even a .340 Weatherby Magnum it certainly does.  When I got my rifle there was no loading data available so I called Nosler and the load they gave me for the 200 grain Ballistic Tips was a Federal 215 Magnum Primer, a 200 grain Nosler Ballistic Tip, and 112.0 to 116.0 grains of RL25.  The most accurate powder charge I found with this load is 112.0 grains, which is what I still use because it's so accurate.  Currently Nosler says H1000 is the most accurate powder, this load is a Winchester Large Rifle Magnum Primer, 113.0 grains of H1000, and either a 200 grain Nosler Ballistic Tip, a 200 grain Nosler Accubond, or a 210 grain Nosler Partition.  I found with my rifle I can interchange the Nosler Ballistic Tips and the Nosler Accubonds and get the same point of impact and same size groups, right around 3/4 of an inch at 100 yards. 

If you're going to use the break when you hunt put in an ear plug in your non-shooting side ear (for right handed shooters the plug would be in your left ear and vice versa for left handed shooters).  The reason you can get away with putting in just one ear plug is because your head blocks the sound waves from entering your ear canal.  This helps A LOT to save yourself a SEVERE head ache and ringing ears.  The first time I hunted with mine I didn't even think of putting ear plugs in and when I shot my bear it felt like someone stabbed me in my ears and they were ringing big time.  I thought I ruptured my ear drums because of the pain and that when people talked it sounded like I was listening to them while being under water.  Luckily that went away but it took two weeks.  Ever since then I always put in the one ear plug.  The down side to having the ear plug in is your hearing is off balance and everything I hear sounds like it's coming from my right side.  I've trained myself to look to my left first whenever I hear something which took some time.  This isn't too big of a deal but it also takes some time to get use to.  Another thing is if there's anyone with you when you're shooting with the break make sure you tell them to put on hearing protection or stick their fingers in their ears because it's so loud.  The one time I was at the range there was a guy at the bench next to mine and I told him to put on his muffs because my rifle is very loud.  The guy blew me off so I told him a second time and he got mad and told me to worry about myself and not what he's doing.  I tried to explain to him I wasn't trying to be bossy or rude and just wanted to warn him and he told me shut up and shoot.  Well I did and as soon as I did he started screaming like an idiot about what the hell I was doing and before I could say a word another guy who was there with four of his friends chimed in and told him to shut up because I tried to warn him three times.  One other thing I've noticed is when I shoot mine with the break on people tend to move  and avoid the benches that are right next to me.  As for shooting it with the break off, as per Weatherby your point of impact can and will shift around one inch in any direction.  Shooting it with the break off isn't for the faint of heart.  It's a good hit and will make your teeth pop together.  I don't think it's too bad but I'm not recoil shy at all.  I don't think it's much worse than shooting my .458 Winchester Magnum which is an old Ruger M77 with the tang safety and thin red recoil pad which is more of a decoration than a recoil pad.

One other thing is the .338-378 Keith Thompson is different than the .338-378 Weatherby Magnum, the cases are different dimensions in that the Keith Thompson is a shortened .338-378 case where at the .338-378 Weatherby Magnum case is a full length .338-378 Weatherby Magnum case.  If there's anything I can help you with feel free to ask.  Enjoy your new rifle and good luck with it, I'm sure you'll love it.
« Last Edit: August 11, 2017, 12:29:00 PM by Chris338378 »
Nothing is better than a Weatherby, big bore magnum, or a Colt.

Re: recoil/ 338-378
« Reply #9 on: August 11, 2017, 12:03:23 PM »
The following link might be helpful.http://www.chuckhawks.com/recoil_table.htm
Roger
Faster horses,younger women,older whiskey,and more money.

Re: recoil/ 338-378
« Reply #10 on: August 11, 2017, 01:57:08 PM »
That's a great chart! Is that the weight of a factory Accumark 338-378 (11.75 pounds)? Geez...that is heavy!

Look at the recoil for the 378 Weatherby! I've always heard they had stout recoil...I'll pass.
« Last Edit: August 11, 2017, 04:59:19 PM by wyominghunter »
JK

Re: recoil/ 338-378
« Reply #11 on: August 11, 2017, 05:01:49 PM »
That chart is pretty interesting.  Speaking of stout recoil did you notice the .460's at just shy of 100 for energy?  I remember an article that was in Guns and Ammo or maybe Shooting Times in the late 70's or early 80's where they had a lady sit in a wagon and shoot a .460 Weatherby Magnum then they measured how far back the wagon was pushed.  I don't have the article any more but I remember it was pretty interesting.  I haven't gotten around to shooting my .460 Weatherby Magnum yet but that chart is definitely kicked up the itch to shoot it.
Nothing is better than a Weatherby, big bore magnum, or a Colt.

Re: recoil/ 338-378
« Reply #12 on: August 11, 2017, 05:33:43 PM »
I use to hunt deer and elk with an unbraked 378 WBY and the recoil was absolutely brutal, 3 shots on the bench resulted in a bad head ache. That was with 270 g bullets, after I had it Magnaported it was shootable but still painful. So a 338-378 with 250 g bullets will kick almost as much. By the way the recoil was not no gentle push it was like being hit by George Foreman. After I stepped down to a 340wby I would shoot off the bench with free recoil, also a hard punch but nothing like the 378.
John

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Re: recoil/ 338-378
« Reply #13 on: August 11, 2017, 07:16:02 PM »
Thanks for the input everyone

That is a interesting chart for sure

I have shot a 300 ultra mag, a 375 H&H with 235 gr and 270 gr.
The 375 H&H with 235 gr was my limit on recoil, after that it was no fun

Looking at the chart the 338-378 is more than all of these, even with a heavy rifle. I think with the brake it would be ok.

That said I called the guy to buy it and he had sold it. So I don't think I am going to try and find another one.

Thanks again for all the info guys
Mike

Re: recoil/ 338-378
« Reply #14 on: August 12, 2017, 07:48:28 AM »
according to that chart, the 378 has a good 2/3's more the recoil of the 338-378 with out the brakes. It don't feel like that in my DGR 378, I find the recoil in the 250 gr loads in the 338-378 and the 270 gr loads in the 378 similar, and the 300 gr loads in the 378 a little more. But I did fire a friends older wood stocked not braked 378 some years back, and it would kick your teeth out :o it was brutal.

Rob
cfp-223REM
accumark-223Rem
ultralite-240 Wby
synthetic-240 Wby
synthetic-257 Wby
ultralite-270 Wby
fibermark-270 Wby
accumark-270 Wby
accumark-7mm Wby
stainless-300 Wby
fibermark-300Wby
accumark-30378 Wby
fibermark-340 Wby
accumark-338378 Wby
custom-375 Wby
DGR-378 Wby
DGR-416 Wby
custom DGR-460 Wby