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3 minutes ago, meles meles said:

Come on, bald monkeys. Back on topic. .338" or .300" Norma Magnum ?

.338 lapua ...anything less is Gay 🙂🇬🇧

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.338 Lap Mag for my vote.  However I will be happy to have a go of your .300 Norman if you swing that way.

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Unfamiliar with the length of DTA mags, but before you go .338LM route, double check how long you’ll be able to load your bullets. You don’t want a short mag length forcing you to seat those long bullets (the 300g are long) deep into the powder column.

Seating 300g bullets out of the powder column when using non CIP length mags was one of the key design considerations of the .338NM & .300NM. 

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There is not much need to be able to shoot ‘Mag Length’ as far as I can see, so whilst magazine feeding might be attractive it’s not really necessary.

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Were I to build an ELR rifle I’d choose a solid action

 

no need for magazines 

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Thing is the OP is using a DTA...he not looking for a dedicated ELR on a solid action.

But I do agree, one can single load. But not sure if the OP wants to single load. As he’s using a repeater, one can assume that he’ll still want the benefits of using the mag?!? 

Still think it’s a valid consideration to bear in mind....if using the mag is indeed still his intention. I’ve seen a few people get a .338lm only to realise the long bullets they want to use don’t fit...so have to resort to single loading, something they didn’t want/plan to do.

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The ability to use a magazine isn't essential: when using the .338 or 300 NM to pop the buttons off Farmer Giles' waistcoat it'll be single aimed shots rather than blazing away as quickly as possible. 

The DTA is the action we already have, it's a switch barrel and the bullpup style will allow for a long barrel in a manageable gun.  That said, a dedicated long range rifle isn't totally out of the question but that then raises the issue of what type to thrown onto the question pile alongside calibre...

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5 hours ago, Ronin said:

Were I to build an ELR rifle I’d choose a solid action

 

no need for magazines 

And what might this dedicated ELR rifle comprise? Any particular action and barrel make stand out above the others? Stock type?

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I have a Barnard PL action with a Truflite 32' 1:10 tube.  Dolphin chassis with a folding stock.  Did you not clock it at Eskdalemuir?  A badgers' eyes don't work too good in the light😁.

Seemed to work quite well with 300gn Lapua I thought.  Single loads only.  The Barnard trigger is excellent.  The whole lot is pretty heavy but that makes for a comfortable shoot.

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We’re I inclined I would start with a Barnard P and go from there

 

I was sat on a PChey action for a forum member for a couple of years who decided not to build in the end - shame I don’t still have it 

 

Anyway - Barnard P, Bartlein barrel or equivalent quality , chassis type stock

Chambering - 338 of whatever variety you choose or 375 cal

 

That’s the way I would go for ELR 

Would use high BC solids 

Warner’s possibly or GS customs modified with a band to induce stability at the nose (as per Jim Boatwrights design)  

 

 

 

 

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I've made quite a few now, usually for the AXMC, and will be trying one myself when my new AXMC arrives.

In .300NM, What attracts me, is several things.

1. You could use it at Bisley, or other place that won't allow .338lm.

2. There is a huge range of really Gucci .30 calibre bullets in the heavier end available.

3. Lapua make brass for it [ yes, they also make .338] . What surprised me, was, out of the blue one day, they announced 300 NM and .338NM brass.....without anyone really knowing what it was.

Wonder why that was ? 😏

Regarding guns, as previously mentioned, mine will be on an AXMC.

I've built several .338's lately on the excellent Defiance Deviant action though.

These are CIP length, and go perfectly into the AX l/A CIP chassis. Which has an excellent magazine system, and doesn't look like some left over scaffolding.

MDNbanf.jpg

zhLrVrn.jpg

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New bullets to try in the 300NM, never had a vacuum packed bullet delivery before:

 

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John - Flatlines?

T

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Have these bullets got Boatrights cannula ring ?

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Yup

 

the same thing John

 

think it’s been “adopted” by Warner / Tubb from an research carried out Mr Boatright 

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28 minutes ago, Ronin said:

Have these bullets got Boatrights cannula ring ?

A cannula is a needle and valve they stick in your hand to draw blood, a ring around a bullet is a cannelure

 

Cannula

1490264714-becton-dickinson-venflon-iv-c

Cannelure

fir_m10_t06_09_d.3.jpg

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My apologies for auto correct spelling Mark

Bit of light reading 

 

http://www.thewellguidedbullet.com/

 

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.338 alongside .30 Cal, Tubb nose ring clearly visible. The bullet also have a clearly visible raised 'sealing rings/drive bands' similar I suppose to those found on artillery projectiles.

IMG_0153.jpg

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What twist is required?

Who’d you get them from/thru?

Cheers T

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