7x64/284 rem for long distance work

[norfolk shooter]

Anyone use the mentioned calibre for long distance work. From what I can see it's much the same as the 284 rem. I might be wrong it's might be the 280 rem

 

[stug]

284 win is the latest rage in NZ. Guys are using handy rifles with short barrels (18") with a suppressor and shooting the 162amax/eld at 2600-2800 fps out to 600 ish yards. Make a nice light carry package for climbing around our hills.
7x64 and 280 rem will give similar performance.

 

[norfolk shooter]

7x64 been around since the early 1900s and still seems to be going strong. I think its popular in SA due to the European settlers there. Still dropping big boar in Europe but I wasnt sure about performance past 400yrd.

 

[stug]

Pick the right projectile like the 162 amax/eld -x and it will work fine. These projectiles can be too soft up close though.

 

[gillettehunter]

Stug is 100% correct. Gotta have the right bullet. I have read about some of the fellows in NZ that do some long range hunting. They find 2 bullets that work in their rifle. One a "harder" bullet for close shots, usually under 350-400 yds and a long range bullet that is "softer" and will open up at longer ranges. The other bullet used a bit for long range are the Bergers. They carry the harder bullet in the rifle. If they set up for a long range shot they switch out ammo. Not my way of doing it, but I have heard of it. Bruce

 

[norfolk shooter]

This is going to be a potential Kyrg rifle for the Mid Asian Ibex. Ive been told get a 140 grn + pill in the right place and that should do the job.

 

[IvW]

The 7×64 Brenneke and 7x65R Brenneke are both exceptional cartridges for long range work. I own a 7 x 65R in a combination gun and it is marvelous. I have always wanted a 7 x 64 Brenneke and am looking hard and will not pass up the right rifle when it comes along. The perform at their best with heavy for calibre bullets 160-190 gn depending on what you want to do.

One difference between many American and European cartridges is bullet weight and barrel twist. American cartridges tend to prefer lower bullet weights and higher speeds and European cartridges higher bullet weights and slower speeds. Similar cartridges/rifles in European form would have a tighter barrel twist to stabilize the heavier bullets.

280 Rem-typically 1 in 9.25 or 1 in 10 twist.
7 x 64 Brenneke 1 in 9 twist.

Heavy for calibre bullets is what you want for Africa and that is why European cartridges have such a good history and performance record in Africa.

EG. 6.5 x 55, 7 x 57, 7 x 64/7 65R, 9.3 x 62/9.3 x 74R, 318 WR, 333 Jeff, 404 Jeff, 416 Rigby, 500 Jeff etc.

You will not regret going the 7 x 64 Brenneke route.

One of the greatest European cartridges ever developed and has a very strong following in Europe.
Below is a link to an interesting article you may find helpful.

Read more on: http://stateofguns.com/deadly-7-mm-brenneke-1827/

 

[stug]

For long range definetly go with a 162 or 168gr eld-x or Berger. The higher BC of these projectiles will help with the wind when shooting across valleys etc.
I used a 160gr accubond as my close range load. It shot within 1" of my 162 amax at 100yds in my 7mm mag.

 

[norfolk shooter]

How about barns tsx or mrx even?? I always thought the bergers wont penetrate enough but sure as hell turn things to soup!

 

[stug]

Bergers will penetrate at long range, in my 7mm mag the 168 berger and 162 amax were identical in performance. Never tried the branes mrx.

 

[Neale]

Hey norfolk shooter the Barnes TSX may not expand enough at long distance after the velocity drops off. You are better off with an expanding bullet with high BC.
I use a 280 Ackley improved with 150 gn Ballistic tip for long range. This has been a successful combination for deer size animals in the 4-500 meter range. I use the 160 gn Accubond for shorter range work and it was the ABs that took my SA trophies last trip.

 

[norfolk shooter]

Better BC but traveling slower is better than a slightly worse BC but traveling faster? Is that correct??

 

[Neale]

Its all about bullet construction, nothing to do with BC. I am no expert but try to explain.
The higher the BC the better it will retain velocity and not drift as much in the wind at distance. (350+meters)
So BC is really related to ballistics ( drop and drift) higher the BC less the drop and drift (velocity the same) We are talking small amounts though.

Bonded bullets or mono metal bullets are built to expand in a controlled manner at a certain velocity. (See the bullet manufacturer web sites). Therefore if you use a tough bullet for long range the velocity has dropped off so the bullet will not expand very much and some may act like a solid and pass right through without expansion.
The soft bullets will blow up at close range due to the high velocity, at longer range the velocity has dropped off to a level that the softer bullet was designed, hence it will expand and have fairly good penetration.

 

[norfolk shooter]

Its all about bullet construction, nothing to do with BC. I am no expert but try to explain.
The higher the BC the better it will retain velocity and not drift as much in the wind at distance. (350+meters)
So BC is really related to ballistics ( drop and drift) higher the BC less the drop and drift (velocity the same) We are talking small amounts though.

Bonded bullets or mono metal bullets are built to expand in a controlled manner at a certain velocity. (See the bullet manufacturer web sites). Therefore if you use a tough bullet for long range the velocity has dropped off so the bullet will not expand very much and some may act like a solid and pass right through without expansion.
The soft bullets will blow up at close range due to the high velocity, at longer range the velocity has dropped off to a level that the softer bullet was designed, hence it will expand and have fairly good penetration.

Got ya mate

 

[Odinsraven]

The Blonde dropped everything last year with her 7x64 we used 170 gr for the black wildebeest and 139sst for everything else. ....clean kills out to 300m

 

[CAustin]

7x64 been around since the early 1900s and still seems to be going strong. I think its popular in SA due to the European settlers there. Still dropping big boar in Europe but I wasnt sure about performance past 400yrd.

Thought hippo was next up on your list! No need for 400 yard shots @norfolk shooter .......Africa is calling you daily sir.

 

[IvW]

Better BC but traveling slower is better than a slightly worse BC but traveling faster? Is that correct??

You are correct a high BC bullet will out perform a low BC bullet in the same calibre, even if the low BC bullet starts off at much higher velocity. It will retain(and actually overtake) the velocity of the lighter bullet and also retain much more energy at long range.

I shoot 286 gn barnes TSX and 300 gn Nosler accubonds in my 338 Lapua.

This term, usually abbreviated to “BC,” refers to the aerodynamics of your bullet. A long, sleek bullet with a very pointy tip and a boat-tail base slips through the atmosphere much easier than a blunt-nosed, flat-base design; thus it maintains its velocity much more efficiently. Bullets with high BC’s are critical to long-distance shooters: They have a flatter trajectory, drift less in the wind and maintain energy and expansion-causing velocity better.

Read more: http://www.gunsandammo.com/shoot101/common-ballistic-terms-you-should-know/#ixzz4Yg7TvJtm

Comparison for 338 Lapua 225gr vs 300gr bullets.

225gr nosler accubond
2900fps muzzle and stays supersonic till about 1300 yards depending on atmospherics

300gr SMK
2780 fps muzzle and stays supersonic till about 1900 yards

 

[norfolk shooter]

@CAustin next year is Mid Asian Ibex need to get that done sooner rather than later. Knees aren't as good they once were

 

[CAustin]

@CAustin next year is Mid Asian Ibex need to get that done sooner rather than later. Knees aren't as good they once were

Understood sir. My knees will need some work in the next few years!

 

[norfolk shooter]

The wonderful health service we have in the UK won't do mine as I'm only 35!!