Most Efficient 7mm Cartridge for 195 EOL Elite Hunter???

[highdrum]

So what kind of velocities are you getting with your 28's with the 195?

3150 fps is usually pretty easily found with RL33 as long as you're throated for the 195s.

 

[TwoMore]

My 28 nosler was throated for the 195 on a 28 inch barrel 8.5 twist and at 3150 brass life was two or three rounds and loose primers, knock a 100 fps off and brass would live. and rl33 was so foul I hated I bought 16 pounds of it

 

[highdrum]

My 28 nosler was throated for the 195 on a 28 inch barrel 8.5 twist and at 3150 brass life was two or three rounds and loose primers, knock a 100 fps off and brass would live. and rl33 was so foul I hated I bought 16 pounds of it

Bertram brass lasts quite a while at high pressure. ADG & Peterson will have brass available soon as well. That speed can also be found with N570, it burns a lot cleaner, however is hard to find. Guys are having good success with 8133 in large overbore cases like the 300 norma.

 

[TwoMore]

I sold the 28 and built a 7mm Ultra rogue. it barley trots at 3180 with an upper node at 3260 with 6 dollar a pound wc 872 when I ladder tested it to the same pressure my 28 was it ran 3290, I just formed up 20 pieces of bertram 338 edge brass and am going to run some pressure up on them to see how the pockets do.

edit I wish I would have tried 872 on the 28

 

[elkaholic]

Bertram brass lasts quite a while at high pressure. ADG & Peterson will have brass available soon as well. That speed can also be found with N570, it burns a lot cleaner, however is hard to find. Guys are having good success with 8133 in large overbore cases like the 300 norma.

8133 does give good velocity but we have had problems with high e s
+1 on N570

 

[TwoMore]

to tell the truth I am not entirely sold on the 195. although they shoot very good I am Thinking bout going back to(or at least trying) the 180 .I killed two deer with the 195 and a wild dog (Killing Cow Calves) the dog was at 480 and the deer were at a tad past 300 and 500 bullet was very explosive and made a mess, now it killed DRT but messy. now the longer shot on the deer I pulled the trigger at the same time the buck started to walk and I hit him square in the middle right through the gut, and it dropped and kicked a couple times and that was it, no exit but massive carnage. I guess if it were my wsm or a smaller round I may have lost that deer. so I really dont know what to think.

 

[StanB]

8133 does give good velocity but we have had problems with high e s

That's an interesting note on the es with 8133. What kind of #'s are you seeing?

Over the course of 3 shooting sessions, I've had mi-20's to low 60's, 48 avg es, and 25 avg sd, via Magnetospeed. I was wondering where my loading process could improve, as the only thing I'm not doing is annealing necks (which I plan to add to the routine).

 

[StanB]

8133 does give good velocity but we have had problems with high e s

That's an interesting note on the es with 8133. What kind of #'s are you seeing?

Over the course of 3 shooting sessions, I've had mi-20's to low 60's, 48 avg es, and 25 avg sd, via Magnetospeed. I was wondering where my loading process could improve, as the only thing I'm not doing is annealing necks (which I plan to add to the routine).

 

[elkaholic]

That's an interesting note on the es with 8133. What kind of #'s are you seeing?

Over the course of 3 shooting sessions, I've had mi-20's to low 60's, 48 avg es, and 25 avg sd, via Magnetospeed. I was wondering where my loading process could improve, as the only thing I'm not doing is annealing necks (which I plan to add to the routine).

I tried several primers and es ran from 35-50' in my 30/375. Another client tried it in his rifle with the same kind of e s spread. It was a different chambering.

 

[Gamesniper19]

I am currently considering a 7-300 PRC by simply just necking down the 300 to a 7mm. Why?

I currently have a 7/338 NM and run the 195 bergers at 3190 fps with 86.8 grains Retumbo. I could probably go a bit faster but to have any kind of barrel life at all, I am keeping it sub 1/2 MOA right at this speed. I run a PROOF 26 inch 8 twist barrel on a defiance action. Its going to burn the barrel in under 1000 rounds I believe. (pic below) I did the paint and finish work on the rifle

I can get better 7mm BC than the 30 cal bullets from Hornady (the 175 ELDX versus the 212) with hunting caliber velocity of >3000 fps with better barrel life by building the 7-300 PRC. I am going to run one.

 

[elkaholic]

I think what you are describing is not the most efficient but what is the best compromise for your personal goals. A 7 PRC will be anything but efficient with 95 grains of capacity in that bore size.
I do realize that you aren't the op and I understand what you're after.

 

[Gamesniper19]

I think what you are describing is not the most efficient but what is the best compromise for your personal goals. A 7 PRC will be anything but efficient with 95 grains of capacity in that bore size.
I do realize that you aren't the op and I understand what you're after.

By my calculations, I can optimize the amount of powder to bullet weigh ratio (about 90 grains with a 195 grain bullet) which is more efficient and a better ballistic signature for hunting.

Aren't the op?

 

[elkaholic]

By my calculations, I can optimize the amount of powder to bullet weigh ratio (about 90 grains with a 195 grain bullet) which is more efficient and a better ballistic signature for hunting.

Aren't the op?

Original poster of the thread. The title being "the most efficient cartridge for a 195 eol"
I'll grant you that the prc might be a little bit more efficient than a NM. Although not much since the NM has a shorter burn column and not that much more capacity. Given current brass availability though, I would probably stick with the NM case and load down to lower pressure which would still match the prc. Just my opinion.

 

[MudRunner2005]

I am currently considering a 7-300 PRC by simply just necking down the 300 to a 7mm. Why?

I currently have a 7/338 NM and run the 195 bergers at 3190 fps with 86.8 grains Retumbo. I could probably go a bit faster but to have any kind of barrel life at all, I am keeping it sub 1/2 MOA right at this speed. I run a PROOF 26 inch 8 twist barrel on a defiance action. Its going to burn the barrel in under 1000 rounds I believe. (pic below) I did the paint and finish work on the rifle

I can get better 7mm BC than the 30 cal bullets from Hornady (the 175 ELDX versus the 212) with hunting caliber velocity of >3000 fps with better barrel life by building the 7-300 PRC. I am going to run one.

Why not just build a .28 Nosler? You're basically describing the exact same thing, but with a different parent case and slightly different dimensions...