6.5 WSM- 147eldm or 156 eol?

[wildwilderness]

A new project for mountain hunting. Mainly sheep and mt goats. With other variables like powder- H1000 or RL26, and brass- Norma resized 270 wsm or Bertram 6.5 wsm head stamped, have these 2 bullets to choose from.

I find it easier to start with an ideal setup and just stop once it shoots “good enough” also its pretty overbore so don’t want to shoot out the barrel too quickly

 

[wildwilderness]

We just got my wife a Tikka T3X superlite roughtech. 6.5 CR Super lightweight. Really great shooting gun. She loves it
May want to look at

That’s not the question- I already have a nice rifle custom. I’m looking for opinions on which “Bullet” to start with for a custom load

 

[PathFinder]

Probably the 156 since it will have the case capacity to take advantage of the weight and BC.
I'm thinking about rebarreling a Tikka to 6.5 WSM next year, so I'm curious to see how this goes. Are you planning on N570 for powder?

Sent from my Pixel 6 using Tapatalk

 

[Castle Rock]

The gun will tell you what it likes

 

[HandgunHTR]

I am a huge fan of the 147s, so that is how I voted. I use them in my 6.5-06AI and my 6.5 Sherman Max. I don't have any experience with the 156s, but I do agree with Castle Rock. Let the gun tell you what it likes.
Now, if it tells you it likes both, then go with the Murders because they are cheaper, easier to get, and they work.

 

[Muledeerfanatic]

I have used the 147 quite a bit and I honestly wouldn't use it ever again in a cartridge that produces over 2800 fps or so. They are just a bit to violent for me. Shoot great but way too explosive

 

[wildwilderness]

The rifle has a 20” barrel and a suppressor- will lose some FPS. Not looking for the fastest load but will probably be in the 2900-3000 fps range. So far for powder I have on hand H1000 and RL26

 

[.270]

I can't give you an honest opinion since I haven't used the 156s but I have used the 147s in my 6.5 SAUM extensively. I do have 400 156s sitting there, but I haven't found a need yet to use them. The 147s have worked as designed on numerous deer and a single elk. From 40 yards, on the elk, to far enough on coues deer. I do reserve my stash of RL26 for my SAUM, I shoot them at 3050 with a 26" barrel. I am sure the 156 will work well but I haven't had a need to try them yet. With sheep and goats having a smaller chest cavity, probably bigger then coues deer, I would see if the 147 work on your barrel. H1000 is also a good choice, just less velocity then RL26.
I have a 20" barrel SAUM in the works and will stick to the 147s unless the barrel doesn't like them. Then the 156 would be my next choice.

 

[jk_minn]

Here’s a 156 sitting in ADG 270 Brass (necked down and turned). Should have my rifle soon as well - 20” barrel too!

 

[Bobcat 33]

Im looking in to this. Does anyone make dies for it? I have a 25-270 wsm

 

[texag10]

Shooting a 6.5-284, but switched from 156s to ELDMs (140gr in my case) due to availability and price. I only shot an antelope with the 156, but it was impressive.

 

[lil' bear]

Im looking in to this. Does anyone make dies for it? I have a 25-270 wsm

Have you had issues with your 25? I've been really looking into a 25 wsm but have seen conflicting information. I found a guy making 145gr lead cores. And I think I may just order a bunch and try it out.
But I've read that people struggle with case fill unless you have a long enough barrel for slow powders. May just use the western case instead. From experience what are your thoughts?

 

[lil' bear]

The rifle has a 20” barrel and a suppressor- will lose some FPS. Not looking for the fastest load but will probably be in the 2900-3000 fps range. So far for powder I have on hand H1000 and RL26

Ive really been struggling with which decision to make, my 300wsm barrel is bad. I have a bucket of once fired brass and I'm looking to make a change. However I can't seem to find an upside.
Truly what is the point when your sacrificing over 300fps to also lose 15 grains of mass? A 165gr .30 cal will clear 3200 out of the wsm case.
When concerning recoil you gain force by losing bore size. So the 15gr difference is negated.
In terms of B.C. you are gaining so very little in comparison to the 300fps loss in velocity.
You are restricting bullet options as well as diminishing barrel life.
I'm simply trying to find one good reason to make the switch.

 

[Flymost]

You’ll be fine with either, the M are slightly more explosive and the bergers a little tougher. The difference isn’t worth picking one over the other tho. Just start with one and if it doesn’t shoot to your satisfaction try the other. Interestingly the 156s tend to shoot just as fast as the 147s. I believe it has to do with less bearing surface but I’m not sure.

 

[wind gypsy]

Ive really been struggling with which decision to make, my 300wsm barrel is bad. I have a bucket of once fired brass and I'm looking to make a change. However I can't seem to find an upside.
Truly what is the point when your sacrificing over 300fps to also lose 15 grains of mass? A 165gr .30 cal will clear 3200 out of the wsm case.
When concerning recoil you gain force by losing bore size. So the 15gr difference is negated.
In terms of B.C. you are gaining so very little in comparison to the 300fps loss in velocity.
You are restricting bullet options as well as diminishing barrel life.
I'm simply trying to find one good reason to make the switch.

Not sure what you're saying about gaining force by losing bore size in relation to recoil, that's new to me?

A 147 ELD or 156 berger at 3000 FPS will recoil less and easily beat a 165 30 cal bullet @ 3200 fps in wind drift from 0 to infinity. The difference in trajectory between the two would be less than the difference in wind deflection with a full value 10mph wind and trajectory is much easier to account for.

Also, are you comparing a 20" 6.5 to a longer barreled 300? Certainly a longer barreled 6.5 could push these bullets over 3k fps.

A 7mm version with 160-180 class bullets might be a good compromise for one who wants to shoot that weight of bullet.

 

[lil' bear]

Not sure what you're saying about gaining force by losing bore size in relation to recoil, that's new to me?

A 147 ELD or 156 berger at 3000 FPS will recoil less and easily beat a 165 30 cal bullet @ 3200 fps in wind drift from 0 to infinity. The difference in trajectory between the two would be less than the difference in wind deflection with a full value 10mph wind and trajectory is much easier to account for.

Also, are you comparing a 20" 6.5 to a longer barreled 300? Certainly a longer barreled 6.5 could push these bullets over 3k fps.

A 7mm version with 160-180 class bullets might be a good compromise for one who wants to shoot that weight of bullet.

Thanks for the reply, you are correct in that my 300 barrel is 24". So that does account for a little over 100fps.
So wind drift is the key factor we are looking for? Id like to know what the actual difference would be, I don't have the software to run that.
I've got 3 rifles in pieces on my bench and I'm just trying to find an idea of what to do with them. I've been thinking one 7wsm with the 180eldm. One in either 6 or 25x284 and the last is either going to become a 25wsm with 145's, a 25 western with 134's, or a 6um with 108's

As far as restricting bore size, you are aware of "barrel burners". The concept of restricting bore size increases pressure, and pressure=force. When you are dropping grain weights you are reducing felt recoil. However when you keep the same grain weight you are actually increasing force. For example a 25-08 with a 125 grain bullet would recoil more than a 308 with a 125 grain bullet loaded to match muzzle velocity. If you load to match powder the recoil will be similar but the 308 will be a good bit faster.