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My New Defensive Edge LRKM

I have just never been dramatically impressed with the CE bullets. Nothing really wrong with them but the ones I have tested in 7mm, 30 cal and 338 really left me wondering one major question after I developed loads for them, what am I really gaining here????

The reason I ask that is three fold.

1. Mainly cost. I can get conventional cup jacketed lead core bullets that are more consistant over a wider range of bore diameters and more forgiving in seating depth and load and do so with prices that are 1/3 to 1/2 less then the CE bullets.

2. They can be a real pain in the rear to find that sweet spot in seating depth, in fact a few rifles I have never found it and gave up.

3. Terminal performance. There is no doubt that at closer ranges they do extremely well but at long range, like the TSX, TTSX and LRX bullets from Barnes, they thrive on speed but as range increases, terminal performance can really drop off as with all solid copper or alloy designs, even HP designs.

Now in the 375, they may have some merit simply because of the lack of options out there but for all other calibers, I see them as an option but just can not justify the extreme cost over more conventional bullets which will offer at least as high of a BC, be more forgiving from bore to bore and generally better terminally over a wider range of distances. Just my throughts.

Again, have no problem with these bullets, just do not really see the justification to charge what they do for what you get in most calibers.

Kirby.

I have never used the smaller calibre CE projectiles, like you I can't really see the point, the conventional projectiles do an alround fantastic job, there is basically one to suit nearly every possible situation.

The bigger calibres 375 & 416 for instance the jacketed projectiles are limited.

The ones I have tried were left wanting in either speed, BC, accuracy, terminal performance or a combination of all four.

The speed, BC & accuracy achieved by the mono projectiles in the bigger calibres, at this stage, is basically impossible for a conventional projectile to equal or better.

Terminal performance of the monos is getting better with the introduction of the tipped Lazer projectiles & alike.

I have had little to no problem with seating depths with the CE, GSC, Lehigh & Predator projectiles I have used.

The 414 depth I used was the first one I tried & it shot lights out straight away.

My own experience has shown the tipped projectile lose a little BC over their untipped siblings, this is with my custom tipped ones, terminal performance goes through the roof & accuracy isn't degraded.

Basically without the mono projectiles the bigger calibres have very little if anything to offer over a big 338, some would say they still don't.

I will happily pay a premium for a projectile that allows me to shoot moa or better well beyond a mile :)

Sorry for wandering off track a little Broz.
 
Thanks for the discussion guys. Like was said earlier, this does feel like the good ole days here. I love it. Thanks again. Enjoying this thread.
 
Off Topic? Not as far as I am concerned. I started this about my ELR rifle. Any ELR discussion is good as far as I am concerned. Especially when it involves people in the know and not just keyboard warriors. I am enjoying the posts so take it where ever you like. As soon as I have more on the LRKM in 338 Terminator +P I will add it.

Besides Kirby, your results with the solids are the same as mine, so it is good to know my results are not alone here. That said I have not used the solids in 338's and up.

Jeff
 
I have not tested them in the 375 as much as I should be but I just am not a fan of a solid bullet for extreme range hunting. Now, slappin steel or rocks, certainly but just have a hard time using them for big game hunting.

Guess I should give the CE bullets a better go in 375 but right now have to many irons in the fire, namely, customer projects that need to get out that are far overdue!!!

Wintertime used to be my big R&D time but now it just seems like because of one delay or another, its just constant all year round!!! You know what waiting for a rifle is like though so just preaching to the choir here......

Keep us posted, should have my 338 Raptor up and running with in a week or two and will be curious to compare results with your beast!!!
 
Jeff,

Thanks for letting this discussion continue. I am having a very enjoyable and interesting read!

Kirby,

Not debating, but curious why your not thrilled about mono's for hunting. I agree that in the smaller cals, the cup and core bullets are more efficient when it comes to high BC design and construction and for the most part, bullets like the Berger VLDs are very effective game killers. That said they may not be perfect in every situation.

Now when it comes to the larger cals, the monos start to become more ballisitcally efficient compared to the cup core bullets. I think it is because the mono can be turned/formed to any shape that will fly and stabilize? I think that is much more challenging for the cup and core bullet makers to do in the larger cals? Probably why we see 350 gr SMKs vs 425 gr CEB's? Just speculating.

Back to the hunting... Joel Russo and company did some elk hunting/testing with some 338 CEB's a while back and reported killing "a ton of elk from 500-1300 yds". So it seems that the CEB's had both the accuracy and terminal capability to perform well. When asked how well did they kill in comparison to the 300 SMK? he replied, "no better or worse". That goes back to what you said about there being no real advantage for the price... and I agree... if there is no advantage. If for some reason, they just shot better at LR than anything else less expensive, I suppose that would be a reason. Plus, I've always been in the more controlled expansion crowd.

Sooo... as we move up the ladder to the 375 CheyTac, from where I'm sitting, the clear advantage in all areas goes to the monos, or at least these CEB 425's that Greg is shooting. The way those pills were smacking the rocks way over on the other mountain... If an elk would have been on the receiving end... well, you get it :D

Back to the LRKM... Jeff you suppose Shawn will chamber a super duper 375 in the LRKM someday? How bout a Raptor Kirby? :)
 
With regards to the Mono V's Cup and Lead core bullets for ELR.
I have been testing a number of bullets in .375 calibre at 1150 and 2350 yards, all fired with the same MV of 3070 fps as near as possible.

At 1150 they appear to have BC's in this order from best to worst.
357gn Rocky Mountain
350gn CEB
350gn Rocky Mountain
350gn SMK
320gn CEB.

At 2350 yards I have only tested the 375 Rocky, 350 CEB and 350gn SMK. This was the order of performance.
350gn CEB
357gn Rocky Mountain Bullet
350gn SMK.

Some BC depredation was apparent with the 350gn SMK and 375gn Rocky, but the 350gn CEB seem to follow the G7 profile to 2350 yards with scarry predictability.

No data on game yet. Having too much fun and great success with the 250gn Berger Elite out of my light weight .338 RUM. :) Now that is a bullet that would be very interesting in the .338 LRKM at warp speed.
 
Back to the LRKM... Jeff you suppose Shawn will chamber a super duper 375 in the LRKM someday? How bout a Raptor Kirby? :)

Not sure if Shawn will or not. I know he is very busy producing 338's right now.

I am not far enough into my new 338 to draw hard opinions yet. But I sure do have some very high first impressions. You guys know I have been working hard to become proficient at ELR past a mile for quite some time. Well my success so far with the LRKM is pretty pleasing. A first round hit at 2422 and follow ups to boot with two shooters on a 1 moa target did my sole good. So I guess, I will enjoy this rifle for a while. And so far I am a die hard 338 guy. But my eyes are open to what could be going on. I am just not ready to start over just for a larger bullet splash. At this point I guess I have what I want and need. For now anyway.

Jeff
 
Not sure if Shawn will or not. I know he is very busy producing 338's right now.

I am not far enough into my new 338 to draw hard opinions yet. But I sure do have some very high first impressions. You guys know I have been working hard to become proficient at ELR past a mile for quite some time. Well my success so far with the LRKM is pretty pleasing. A first round hit at 2422 and follow ups to boot with two shooters on a 1 moa target did my sole good. So I guess, I will enjoy this rifle for a while. And so far I am a die hard 338 guy. But my eyes are open to what could be going on. I am just not ready to start over just for a larger bullet splash. At this point I guess I have what I want and need. For now anyway.

Jeff

Are you going to bring it to the shoot Sat? Sure would love to see it.
 
Kirby,

Not debating, but curious why your not thrilled about mono's for hunting. I agree that in the smaller cals, the cup and core bullets are more efficient when it comes to high BC design and construction and for the most part, bullets like the Berger VLDs are very effective game killers. That said they may not be perfect in every situation.

No bullet is perfect in all situations, just a fact of life. Cup jacketed bullets designed for long range shooting are not the best for close range hard impacts. Solid copper or alloy bullets are not the best when velocity drops off at longer ranged and with soft impacts.

Now when it comes to the larger cals, the monos start to become more ballisitcally efficient compared to the cup core bullets. I think it is because the mono can be turned/formed to any shape that will fly and stabilize? I think that is much more challenging for the cup and core bullet makers to do in the larger cals? Probably why we see 350 gr SMKs vs 425 gr CEB's? Just speculating.

From a rifle builders point of view, the monos can be a pain in the rear. This is because they are very dependant on the barrels bore diameter for consistant and accurate performance. Some bore diameters are much better then others for solid bullets and they should be matched up as close as possible for best results. In spite of what some think, barrels vary in bore diameter, even from same maker, some up to as much as 2 thou difference in bore diameter. This can result in dramatic differences in performance with the monos, one bore diameter may shoot them lights out, another may spray them like shot patterns. Can just be frustrating as a rifle builder trying to explain this to customers.

The cup jacketed bullets have a built in feature to coup with varying bore diameters, they are soft and they bump up under pressure to seal the bore. This is why a good cup jacketed bullet will on average shoot more consistently over a wider range of bore diameters, a bonus for a rifle builder. I personally HATE building a rifle to be used for a single bullet, just asking for Murphy to come in and make you look bad. I build rifles perhaps INTENDED to shoot a specific bullet but with the ability to shoot a wide range of bullets so that there is a very high likelihood that I will find a combo that will satisfy my 1/2 moa accuracy potential without ALOT of fuss and bench work.

Just for example, the 300 gr SMK has lost a bit of its sex appeal these days, but of the several hundred large 338 magnums I have made over the past many years, I have only had three rifles that would not shoot this bullet to my 1/2 moa requirements and those two barrels had heat treating issues, were retreated and shot lights out.

To be fair, I have yet to have any of my 338 AX or 338 AM rifles not shoot the 265 gr Barnes TTSX bullets extremely well so can not complain about them either.

Back to the hunting... Joel Russo and company did some elk hunting/testing with some 338 CEB's a while back and reported killing "a ton of elk from 500-1300 yds". So it seems that the CEB's had both the accuracy and terminal capability to perform well. When asked how well did they kill in comparison to the 300 SMK? he replied, "no better or worse". That goes back to what you said about there being no real advantage for the price... and I agree... if there is no advantage. If for some reason, they just shot better at LR than anything else less expensive, I suppose that would be a reason. Plus, I've always been in the more controlled expansion crowd.

NO BETTER NO WORSE, my point exactly. The 300 gr SMK out of my 338 AX or 338 AM will have a BC in the .800 to .820 at my elevation. And they just work and are relatively cheap compared to the solids. Compared to the CE bullets, they are dirt cheap and there is no real ballistic advantage with the CE bullets, why not put invest the money into more bullets and powder or accessary gear.

Then you look at the Berger 300 gr and you get a good boost in BC at very similar prices. I have had some complaints with the Berger when big game was taken at ranges much over 800 yards and when muzzle velocity was below 2800 fps with some pencil holing through game animals. That HAS NOT been an issue in my 338 AM with its extra +500 fps at the muzzle.

Sooo... as we move up the ladder to the 375 CheyTac, from where I'm sitting, the clear advantage in all areas goes to the monos, or at least these CEB 425's that Greg is shooting. The way those pills were smacking the rocks way over on the other mountain... If an elk would have been on the receiving end... well, you get it :D

Ya for the time being, ballistically, the solids have the advantage. That said, I am not convinced that the monos are the clear winners yet. The reason I say that is because if you look at the bigger calibers, such as 50 cal, the aluminum tipped 750 gr A-Max will run with any solid bullet of the same weight. An aluminum tipped 350 to 375 gr cup jacketed 375 cal bullet would run right with the 425 as far as BC but again would have a dramatic velocity advantage. I know this because of my work with the prototype 338 cal bullets from Wildcat Bullets back when it was owned by Richard Graves. We were playing with a 265 gr AT RBBT that was putting down BC numbers in the .920 range and with the ability to drive them to 3550 fps comfortably, there was nothing out there that would run with them even out to 3000 yards. Now we just need a bullet maker that wants to take the time to make a cup jacketed bullet with a good aluminum tip. That gives us the bullet length we need, the aggressive ogive we need, consistant over a wide range of bore diameters, high velocity and great expansion at long range. They are not here yet but they will come with time.
 
Broz, shooting past 2000 yards do you have a spotter, or are you spotting your own shots from the scope?
 
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