25 caliber 143 ELD-M today......

[alphapygmy]

Could you post your findings on jump/jam. I've got the Bergers to shoot like this and BJ close, I'm early in the process with the ELDM and 25x47 looking for the powder it wants. I'm running .010 from touch, I'll find the powder and charge then start backing off. Just curious if they'll be in the same ballpark... Thanks

 

[Preacher]

Could you post your findings on jump/jam. I've got the Bergers to shoot like this and BJ close, I'm early in the process with the ELDM and 25x47 looking for the powder it wants. I'm running .010 from touch, I'll find the powder and charge then start backing off. Just curious if they'll be in the same ballpark... Thanks

My 25/47 loves H4350, I'll check the jump later on my 257 SAUM Imp..

 

[B23]

I was curious about case capacity so I measured two different Lot #'s of new ADG 6.5 SAUM brass I have.

This is straight out of the box untouched new unfired ADG 6.5 SAUM brass.

Case weight for one Lot# was 214.2gr the other was 215.1gr

Neck thickness .014-.0145 for both.

Case capacity measured in H20 73.3gr for both. I always fill, weigh, dump water out, dry and repeat each case multiple times and every time they came up 73.3gr H20.

When I get them necked down to .257 I'll repeat. I'm sure they'll lose a tiny bit going from 264 down to 257 but I doubt it'll be much and once my 25 SAUM is built and I have some fired cases I'll repeat to see what the case capacity of a fired case is compared to new unfired.

 

[Preacher]

I have these 134's running close to 3200 fps with 62.0 grains of retumbo, but it's starting to show .0001 expansion at the web...
I'll double check that later today after fire forming a bunch of them..
Seems to be a honest 1/2" at 100 yards so far, with a few teasers in the ones....

 

[B23]

I have these 134's running close to 3200 fps with 62.0 grains of retumbo, but it's starting to show .0001 expansion at the web...
I'll double check that later today after fire forming a bunch of them..
Seems to be a honest 1/2" at 100 yards so far, with a few teasers in the ones....

Is this still with using Rem brass or ADG?

 

[Preacher]

Is this still with using Rem brass or ADG?

ADG brass turned to .013.. Went to 62 grains of Retumbo and the old BAT started †hat clicking stuff @ 3200 FPS ... Going to settle on 61.0 and check seating and see how it goes.. Was hoping to get a little more velocity out of it, but that bullet weight seems like 3150 FPS lots better anyways....
Did you see the capacity numbers I sent ??

 

[B23]

Did you see the capacity numbers I sent ??

I did see those. As we know the SAUM case is already pretty straight with minimal taper and improving it doesn't really yield much more case capacity over the factory 30°. I got 73.3gr H20 from two different Lot #'s of new unfired ADG 6.5 SAUM brass right out of the box and a fired unsized case will likely hold a sliver more although once they get necked down to .257 that'll slightly shrink that 73.3 number.

Defensive Edge is building my 25 SAUM and I plan to have it throated plenty long for the 134 ELD-M and 133/135 Berger's. Just guessing but I'll likely be close to something around a OAL of 2.970-ish with the Hornady 134's and I'm having Shawn +P the throat so I'll probably be disappointed if I'm not well over 3200++ using N570. That is if I can get enough of it in the case. My biggest concern with using N570 in my 25 SAUM is I'll run out of room before I reach pressure and get the velocity up. If that happens I'll likely switch to N565 or RL26 but until I get it built and start putting a few downrange it's all just drawing board speculation.

 

[284winner]

The 131 BJs, 133/135 Bergers all shoot phenomenal in my 25-284. Can't say one is better than the other. Looking forward to the 134. Personally I prefer the Hornady Amax/ELD-M for killing more than any Berger or BJ bullet. Just my personal choice is all. I'm running the 131 at 3200+. Barrel is only 24" using RL26.

 

[B23]

The 131 BJs, 133/135 Bergers all shoot phenomenal in my 25-284. Can't say one is better than the other. Looking forward to the 134. Personally I prefer the Hornady Amax/ELD-M for killing more than any Berger or BJ bullet. Just my personal choice is all. I'm running the 131 at 3200+. Barrel is only 24" using RL26.

I think this new 134 ELD-M will be a great kill bullet at distance. They're leaving at a pretty healthy velocity and has a very good, high, BC so it'll sustain energy well as it gets out there but they also don't need a whole lot of velocity to still expand well which leads me to believe they'll be a good kill bullet at distance.

My only concern with them would be over expansion at close range since some of these 25 cal cartridges will be launching them 3200-3200+ but only time will tell. My 25 SAUM won't be done in time for this years hunting season but maybe I can shoot some coyotes with it after the first of the year.

 

[284winner]

I think this new 134 ELD-M will be a great kill bullet at distance. They're leaving at a pretty healthy velocity and has a very good, high, BC so it'll sustain energy well as it gets out there but they also don't need a whole lot of velocity to still expand well which leads me to believe they'll be a good kill bullet at distance.

My only concern with them would be over expansion at close range since some of these 25 cal cartridges will be launching them 3200-3200+ but only time will tell. My 25 SAUM won't be done in time for this years hunting season but maybe I can shoot some coyotes with it after the first of the year.

Agreed, I think close range is not the place for these.

 

[jeffreybehr]

Pls pardon my diversion and, I hope, simple question.. When using cases that must be necked down* that presumably creates slightly thicker neck walls, how does one determine that the necks are too thick for the chamber I have? Might it be the lack of being able to easily push a new bullet into a fired neck?

(Pls understand that I may be old, but my experience in this craft is also old--as in from the mid-2000s--and was hardly adequate then.)

* For instance, I'll be using necked-down Lapua 6.5-284 cases for my 25-284 rifle.

 

[B23]

Pls pardon my diversion and, I hope, simple question.. When using cases that must be necked down* that presumably creates slightly thicker neck walls, how does one determine that the necks are too thick for the chamber I have? Might it be the lack of being able to easily push a new bullet into a fired neck?

(Pls understand that I may be old, but I my experience in this craft is also old--as in from the mid-2000s--and was hardly adequate then.)

* For instance, I'll be using necked-down Lapua 6.5-284 cases for my 25-284 rifle.

The neck diameter specs on the reamer used will determine what loaded outside diameter will work and whether or not it'll be a "no turn" or if you'll need to neck turn. General rule of thumb is 1.5 thou per side so for a no turn reamer most want the reamer to have a neck diameter around 3 thou larger then what a loaded round measures. Some smiths are ok with slightly less while others want a little more.

With the 25 SAUM I'm having built my smith had to order a reamer, he didn't already have one, I told him I would be necking down ADG 6.5 SAUM brass and I don't want anything I have to turn necks for so my smith passed that information along to JGS when he ordered the reamer and they'll send him the appropriate reamer whether it be something they already have on file or something custom ground.

 

[Preacher]

Pls pardon my diversion and, I hope, simple question.. When using cases that must be necked down* that presumably creates slightly thicker neck walls, how does one determine that the necks are too thick for the chamber I have? Might it be the lack of being able to easily push a new bullet into a fired neck?

(Pls understand that I may be old, but I my experience in this craft is also old--as in from the mid-2000s--and was hardly adequate then.)

* For instance, I'll be using necked-down Lapua 6.5-284 cases for my 25-284 rifle.

If you can not easily push a bullet into the just fired case, your necks are tight in the chamber...
You will need to turn the necks to fit your chamber..
I like mine to have pop sound when the bullet is pulled out fast, others like a bit more...

 

[jeffreybehr]

B23 and Preacher, TYVM for your help.. I'm already outside-turning the rough-and-thick necks of my 25WSSM cases, and it's finally not-too hot to be outside for a few hours, so I'll be shooting my rifle for the first time tomorrow morn.

 

[B23]

It'll be interesting to see where your 25 WSSM ends up for velocity with the 134 ELD-M's and RL26 but depending on how long your barrel is I'd imagine you'll be somewhere around 3000 +/- 50-100fps.

 

[calib]

I think this new 134 ELD-M will be a great kill bullet at distance. They're leaving at a pretty healthy velocity and has a very good, high, BC so it'll sustain energy well as it gets out there but they also don't need a whole lot of velocity to still expand well which leads me to believe they'll be a good kill bullet at distance.

My only concern with them would be over expansion at close range since some of these 25 cal cartridges will be launching them 3200-3200+ but only time will tell. My 25 SAUM won't be done in time for this years hunting season but maybe I can shoot some coyotes with it after the first of the year.

Did you get your rifle back from Shawn yet? Interested to hear more on the 134 and n570 as I will have a 25 saum in a week hopefully.

Thanks