Thread: Realistic range of 16" 708?

How far would you push this on game. Will be reloading and have the choice of 120gr speer, 139sst or 150 eldx.
Just wondering if it's worth making the change to a lighter rig at the cost of a shorter barrel.
Cheers

You can chuck some parameters in GRT to get a rough idea and go from there. I did that with 6.5 CRD to check that I could reach 300m with at least 1000ft/lb energy.

What powder will you use to reload?

I was using an 18inch 7mm08 and would regularly take fallow and goats out to 600 meters with the 162gr Amax.
I think the 120gr and 139gr sst would be OK out to 350ish meters.

Have bm2 2219 and 2208 which I will probably use

Use the right pill and you should be good to 400-500 yds. I’d be using 150 ELDx out of the ones you listed. 162 ELDMs would be better. Check your muzzle velocity & go from there. I tend to use 1800fps as cut off for 7mm pills, it’s more than 1000 ft/lbs

a far as can CONSISTANTLY make one shot,first shot hits inside 8" so put up 3ltr milk jug and find out.....

1000 Ftlbs is a nice guide. But to be honest knowing at which impact speeds your bullet of choice works is more important. Ie most solid copper bullets require 2000+ fps at impact, whereas something like an eld M may only require 1600fps but will blow up when run too fast. Also each individual bullet of a model isn't the same it I've often found 308 eld ms softer than 6.5 eld ms at similar impact velocities etc. As above I tend to use 1800fps for most lead core bullets as a safe guide and then if it meets that I check the ftlbs after and check it's not outrageously low but velocity is my first check. Plenty of heavier bullets have 1000ftlbs but not enough energy to expand whilst some light bullets barely have 1000ftlbs but have heaps of velocity and work much better.

As for a 16 inch 7mm08 I'd run the 150 eld x and I'd try get reloder 17 or Varget works well and you will likely get 2500-2700fps which should give you enough impact velocity to around 550yards but after that big thing is confirming your drops on target out to that range and your ability to make those shots in field conditions comfortably.

2208= varget

If you do the maths on 708 using 162 ELDM at around max load of 2208, you’ll find it’s fine for way out there. Normally doing around the 2500 fps mark out of 16”.

If you're using TTSXs, I'd limit shots to 350yds max, more ideally 300yds. I've killed deer past that with them but expansion isn't that flash past 300. With my 16" bbl, the 120s are doing 2930.

I chucked the values in GRT. With a conservative pressure value (theoretical), you could get 2450fps with the eldx. That has enough speed and energy up to 500m.

This all depends on how you actually go when reloading, but I'd say it'll reach as far as you can.

I’d take a slower 162eldm over a slightly faster 150 eldx any day. Theory is cool and all that but eldx at those speeds often only works in close.

2640 out of my 7mm-08 17 inch barell running 150 ELDX and 2208.

Originally Posted by Micky Duck

a far as can CONSISTANTLY make one shot,first shot hits inside 8" so put up 3ltr milk jug and find out.....

No worries with that Micky. Plenty of practice has taught me that much. Just want to make sure the pill does it's job when it gets there