140 vs 160

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7mm Rem Mag Hunter

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wondering to my self after looking at ballistics tables for the remington core lokt ultra bonded bullets, why that the 140 grain has more kintetic energy than the 160 grain for the 7mm rem mag.?!

does this mean that out of a 7mm rem mag, the 140 grain would be better for moose, elk and deer than the 160 grain?


wish i was back in the day where there want much for choices, and the good old Nosler Partition in 160 grain would be good enough in my new 7mm rem mag. i was told to stay away from the partition as it is very poor in the accuracy department compared to new premium bullets like accubonds, sciroccos and triple shoks
 
I think that you'd be better off with the 160 gr if you're after moose. The 160s have a far better sectional density and would penetrate deaper than a 140 gr bullet, depending on bullet construction. Bullet energy is an over-rated number IMHO.... a fast .22 centerfire like a .22-250 carries a lot of energy, but I wouldn't want to use it on big game. I'm sure the 140 weight would work, especially with a bonded bullet, but for larger game a heavier bullet is generally better.

I've had good accuracy results with TSXs lately, but partitions have usually been more than good enough for hunting. They're still one of the most reliable bullets ever, so I wouldn't shy away from picking the good old partition. With all the good bullet choices available these days, it's hard to go wrong anyhow! So many choices!
 
You also start to loose the advantage "magnums" or large capacity cases give you when you go to smaller bullets. The larger case capacity gives the 7rm an advantage with slower powders & heavier bullets, when you drop bullet weights the advantage over an eg :mrgreen: .280 or .270 becomes very slim.
 
The Only Way You're gonna Get More Kenetic energy from a lighter Bullet is if it's Traveling much faster when It impacts the Target. It's Definatly Possible for a Lighter Bullet to have more energy when Fired with the same load and out of the same gun as a heavier projectile. Out of a 7mm Mag I'm sure both Bullets will Punch right through an Animal Just the same. That being the Case, what you want is something thats going to leave a Large Wound Channel to take the Animal down while doing the least Damage to Eatible Meat. That Depends more on shot placement anyway. Hope this answers your Question.

Wally
 
It is 160 Grn.all the way for me.I do not have any accuracy problems with the 160
Grn Nosler Part.in my Ruger #1.I have cut my load down to 2700 fps.That seems to be fine in my 7x57.Lots of energy out to 500 yds.which is about 200 yds.farther than I care to shoot.The ballistic co.is very good for the 160 grn.Works for me.
 
I use heavier bullets for my 7mmRM (175grn) I always go with the heavier bullet, carries better, and really most shots I've been taking have been at the 50-150yd range so balistics are not really comming into play
 
7mm Rem Mag Hunter said:
looking at ballistics tables for the remington core lokt ultra bonded bullets, why that the 140 grain has more kintetic energy than the 160 grain for the 7mm rem mag.?!
does this mean that out of a 7mm rem mag, the 140 grain would be better for moose, elk and deer than the 160 grain?
Click to expand...

just because the 140 has better downrange energy numbers in a ballistic pamphlet, doesn't mean it's a better choice for big game. there are alot bigger factors in terminal performance than energy, in fact energy is far down the list. more important, in order of importance (IMO) is :

shot placement
bullet construction
impact velocity (to ensure expansion)
bullet diameter
impact energy



i was told to stay away from the partition as it is very poor in the accuracy department compared to new premium bullets like accubonds, sciroccos and triple shoks
Click to expand...

Partitions are not bad in the accuracy department, I've had good success with them at the range. On average may not shoot as well as an Accubond, but I think they'll hang with the Scirocco and TSX in most rifles



Anyways, of the two loads you mentioned, for elk and moose, I'd go with the 160 gr. Cor Lokt bonded. If it was just deer I'd opt for the 140 gr.
 
With the exception of Barnes all-copper bullets, the 160 is always the better choice in a Magnum 7mm. I have shot a lot of game with the 160 Partition, and it has always been flawless in the performance department. As far as accuracy goes, some individual rifles may not favor the Partitions, but I have always got very good accuracy by playing just a bit. I have seen rifles that did not like the Sciroccos much. TheAccubond fails to deliver sterling accuracy in the odd rifle, too. However, If your 7mm Magnum rifle will shoot the AB or the Partition well, the 160 grain is the way to go! Regards, Eagleye.
 
I have killed several elk and moose with premium 140gr bullets.The simple truth is that any premium bullet such as the partition ,tsx, failsafe,accubond etc. will do a good job on moose or elk in any weight from 140gr on up.In fact,my past experiences thave shown the 140gr failsafe and barnes x to out penetrate the 175gr partition.I would shoot whichever weight that shoots most accurately in your rifle.
 
The Elk I got this year was hit at 200 yards with a 145 gr grand slam. My muzzle velocity was a bit over 2900. I will leave it to Mr. Bartell's lovely assistant :lol: to tell us what that would have been going when it hit the 200 yard target. It made it to the off side of the animal and stopped under the hide and did an excellent job. I only knicked one rib, makes me wonder what would have happened if I had hit more bone. Wieght retention was 87%.As far as accuracy goes, I cannot say yay or nay as I never had alot of time to monkey with the load. I usually get a 1 1/2" group. That is all I've ever gotten with most of my shooting, need more practice.

I will be trying 160's for next year, mostly just for fun. Nice thing with a heavier bullet is it works on the lighter game too. It doesn't always go the other way...
And realistically, how much trajectory are you really going to loose? Put it in the right spot and it's game over. :wink:
 
My questions were answered. but still confused on the bullet to use.

i find more talk about that Nosler Accubonds and Barnes triple shok x bullet are the bullet to use this year.

will 7mmRM 160 grain Accubond slap a hurtin' to a whitetail and moose from 50 to 300 yards?

what will a 7mmRM 160 grain Barnes TSX do to a whitetail and moose at 50 to 300 yards?

I have to hurry and decide, lol, its november already and i need a little more practice.



7mm
 
buy a box of Accubond 160's and go hunting



oh, and Noel, she says it landed with 1855 ft-lbs of energy :mrgreen:
 
7mm Rem Mag Hunter said:
........ was told to stay away from the partition as it is very poor in the accuracy department compared to new premium bullets like accubonds, sciroccos and triple shoks
Click to expand...

Right :roll: ................................. the Nosler partition is more than accurate enough for hunting, even at very long range, and has been killing game for more than twice as long than all the other bullets mentioned put together! 8)

I also use 160s over 140 in the 7mm Mag.

Ted
 
The 140 grs are faster, more energy, less recoil, flatter shooting, to me unless your in close range bear hunting, go with the 140grs there just awsome in my 7mmwsm at 3250fps and speed kills.
 
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