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338 edge

17 Sep 2017
@ 12:21 pm (GMT)

Jared Breingan

Just got a few question you guys might be able to help with in regards to my 338 edge I'm having built.
Action is a stiller predator
Barrel is a kreiger no6 contour will be finished at 28" to start with. Which should be about .730 at the muzzle. Barrrel weight is similar to the Rem Varmint but with more meat at the chamber end and less at the muzzle.
Stock will most likely end up being a precision platform.
So first question I'm going to have a muzzle brake fitted so what would you recommend for thread size and shoulder size being that it will most likely be a side ported brake and I want to be to take it on and off easily for cleaning and the old quick shot. I thinking I would want a good size shoulder to butt the brake against to slow up it creeping but not to thin a thread size over the muzzle. I have been recommended 17x1.
I plan on using the 285 eldm
The action already takes the wyatts extended mag box. Would that be sufficient to mag feed from or is it worth getting the action opened up for the longer wyatts extended mag box of around 4" to feed from. Or is it best to just single feed.
I will obviously discuss with my gunsmith as well.

Cheers

Replies

17 Sep 2017
@ 12:41 pm (GMT)

Nathan Foster

Re: 338 edge
Hi Jared, seeing as you are from NZ, you could support NZ made and have True-Flite supply the barrel. Their .338 barrels are simply outstanding and their current reamer suits the ELD-M. They can also fit the extended Wyatt box which you do need to utilize. They can also make and fit the brake to suit the barrel.

I do not see why a Kiwi would go another way when True-Flite have produced such excellence results with the Edge while also offering back up support.
17 Sep 2017
@ 01:23 pm (GMT)

Jared Breingan

Re: 338 edge
Thanks for your advise Nathan.
Good to know the True flite barrels are going so well, I will definitely keep that in mind for my next barrel. When I ordered my barrel I was going off the advise of my gunsmith as they are his preferred barrel.
17 Sep 2017
@ 01:46 pm (GMT)

Nathan Foster

Re: 338 edge
Thats a shame. When TF started out, there was a major learning curve, much of which you may have read about in my Accurizing book. There were no doubt some barrels in those early days that did not shoot as well as they could and some were truly flat out duds. This was not just about making mistakes, it was a path of discovery, sorting the theory of barrel making from fact. I chose to stick with TF through thick and thin and to help them get to the core of things (again as covered in the book). Others had less patience. In any case, I am glad I stuck it out. In hindsight, it is actually quite naive, arrogant and foolish to expect perfection in year one. Such a thing would be pure chance.

Now regarding your muzzle. An M16 thread is fine. The .750" shoulder is also fine. Remember the rear force is only relative to your hand tightening pressures. Other than this, the brake will be trying to move forwards though in actuality, they tend to freeze due to carbon caking. Enter Neverseize.

You will not be able to take the brake off for a quick shot as the POI will be vastly different, a minimum 6", even with only light porting. You either fit the brake and use it or you don't.

At the barrel length and contour you have chosen, recoil will not be any great deal higher than a Tikka T3 .30-06 or similar. You could start without a brake if you like and see how you get on (you could also for example finish at 30-31" to make up for not having a brake). Otherwise, the brake really only needs to take a small amount of sting out of this, it will not take much to dampen recoil. There is no need to vent to the rear and in turn create a sand blaster that kills your sight picture for several seconds after each shot. The Edge is a slow recoiler. Neither the Lapua or Edge get anywhere near 3000fps with the latest heavy pills and it does not take much to make them comfortable to shoot (subjectively speaking). The stock design you have chosen will be a major factor here, an excellent choice.

Also keep in mind, the longer the barrel, the more strain it will put on your action and the more you need to bed out to around 2.5" or so into the barrel channel. If you relay this to your smith and he doesn't get it, just hang up the phone, done, finished.

Hope that helps. All the best.

17 Sep 2017
@ 03:07 pm (GMT)

Nathan Foster

Re: 338 edge
Just to clarify Jared, my .338 Edge in the Precision platforms vid is .725" at the shoulder with an M16 thread. The barrel is 26" long.

OAL with the 285gr was 95.6mm for .2mm jump but the throat has since gone for a walk so it now has some jump but still accurate. Velocity and jump at middle age is not unlike a .308.

https://www.youtube.com/watch?v=D50hQluX9hY
17 Sep 2017
@ 05:20 pm (GMT)

Jared Breingan

Re: 338 edge
Thanks for that Nathan some very helpful info
17 Sep 2017
@ 08:40 pm (GMT)

Jared Breingan

Re: 338 edge
So from going off your coal length your using the Wyatts mag box with an inside length of 3.825" not the one with inside length of 3.990".
Do you prefer the staggered mag box or center feed.
18 Sep 2017
@ 09:20 am (GMT)

Nathan Foster

Re: 338 edge
Staggered is the way to go. Center feed can at times cause issues.
18 Feb 2018
@ 07:03 pm (GMT)

Jared Breingan

Re: 338 edge
Now have my 338 edge back. Ended up going with a true flite barrel in their no6 contour which is 28” long and .750” at the muzzle with a nice meaty shank. After talking to Nathan and also Clive Judd I decided not to put on a muzzle brake and so far only about 10 rounds in I’m not regretting it. Certainly gives you a nice shove but not unpleasant at all with Nathan’s shooting technique. Now just needs the new stock and hopefully that will help a bit more, as at the moment it sitting in an old rem 700 walnut stock.
 

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