Can a 708 be reamed to 7x57
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Can a 708 be reamed to 7x57
No, not without a bit of work as the 7x57 shoulder is narrower - to do it the barrel would have to be set back. A 284 reamer would be your friend . . . .
the case heads are the same size but the body diameters are different the 708 being wider so i dont believe it possible unless you make an ackley type improved.
Why? In most loading manuals a 7mm-08 will out perform a 7x57, why not .284 or 280ai?
x57 is bigger in every dimension and develops less pressure so As long as you've got the bolt throw to clear the extra half inch should be fine
Wait. Sorry, got that arse-about. Looking at drawings on my damned phone.
But as said above set the barrel back 5mm or so and be fine
Because i dont live in ponsonby and dont drink lattesQuote:
Originally Posted by Cooper
Rebarrel it to 308 thenQuote:
Originally Posted by northdude
7-08 is a larger diameter at the shoulder
And 7x57 is a recognised big game calibre capeable of downing elephants whereas the 708 isnt. So he will be well positioned if marauding herds of pachaderms are spotted in the vicinity of the kaipara heads.
Dude, they're not an Aucklander's gun exclusively.Quote:
Originally Posted by northdude
We have 'em down here in the south island as well.
Owning one won't turn you into a raving left footer*
(*see Black Adder)
In these eyes of the rest of the country anyone in the Auckland area is a latte drinking snowflake.......Quote:
Originally Posted by northdude
:D
Unless you specifically want 7x57 I'd consider the 284 as well.
just because its a recognized that it has killed alot of big game (by a skilled hunter, who knew the anatomy of the game and was a skilled shooter) doesn't mean its a big game caliber. Like shooting deer with a 22. Sure it can be done but it wouldnt be alot of peoples first choice. And then dont get started on the ethics debate.Quote:
Originally Posted by Marty Henry
Why do you have a 708 then?Quote:
Originally Posted by northdude
You could yes, 284 is also a great idea and if you want to be really bad ass, go 7x57 Ackley.
I bought a new 7-08 takeoff barrel for my T3 and had it reamed to .284 Win. That rifle is my day-to-day shooter and drops everything with 162 ELD-X. In a Tikka action with long bolt stop and mag there is room to seat out as far as you like without mag or extraction problems. Would be the same in any other LA rifle. Lapua 6.5-.284 brass necked up is the go too.
If you want something a bit different go .284 Shehane. Blows out the .284 Win case taper and gives 3 grains or so more capacity. That would launch anything up to 180s with authority.
I dont but i can get one at a good price so thought it might be worth rechambering since im one of those guys that likes the proven old school calsQuote:
Originally Posted by Ryan_Songhurst
Even if the barrel was cut back and then rechambered for 7x57 the magazine will be to short to accept the cartridges. Why you would even bother when the ballistic performance difference between the cartridges is so small, is beyond me! Both are good rounds, well suited to NZ hunting.
Nothing wrong with a good latte.
Thanks that answers it thenQuote:
Originally Posted by gundoc
Go 284 if you can. To the best of my knowledge it will out perform the 7x57. 19" bbl pushing a 150sgk @ 2770 is pretty good performance. Can push the 160s-168s with a bit of oomph too
7mm08 is a proven old school cal now;) , The new kid on the block is a 6.5 wiz bang somethingQuote:
Originally Posted by northdude
And tomorrow the 6.5 wizz bang glockenspiel will be replaced by something else, hes on the right track going for a cartridge thats been delivering the goods for 125 years.
What type of rifle is it?
A savage i think tou talking a needmore
Funny how you can be a man with a 260 or a 308. Half a mm or so either way and you are a latte drinker. Nothing wrong with any of the 08 cartridges.
Dont own either of those either
I had Mitch maxbury ream a tikka from 7mm08 to 280
Due to case taper he has set the barrel back a bit
Went well and worked. Perfectly
7mm08 just a 308 with a better BC
Yep... I had a T3 I did the same reaming it out to a .280 Rem and then later I came across the .284 and never looked back.Quote:
Originally Posted by Bill999
also have a Kimber 7mm-08 in the safe but the .284 is a fine killer!
If bullet weight is equal 7mm would have a higher SD then 7.62 would it not?Quote:
Originally Posted by Mauser308
Your rifle was the idea I got mine from, but Mitch set back the barrel a bit to get rid of that line in the case you got where the 08 shoulder was.Quote:
Originally Posted by Seventenths
Me too.
Seems to me that .284 Win is a perfect all-rounder for NZ game. Tahr, chamois, pigs, goats and reds down so far without issues.
I made some additional changes to my T3 that may be of interest to some, which I will write about sometime soon.
Something to consider with those old 7x57 is that they had a very fast twist and that seemed to increase penetration and tissue disruption. So as a result they produced 'disproportionate for calibre' killing. Don't underestimate the 7mmQuote:
Originally Posted by Nugget connaisseur