139gr CX loads for 7mm-08?

[yakimanoob]

No reason for needing a magnum for reasonable hunting distances with those numbers.

I personally have 3 elk, 2 deer, and a bear with soup'd innards to defy the idea that 3k fps is in any way necessary for monos. And I imagine we could collect a lot more examples if we started a thread about this.

 

[homebase541@]

Hey, I like how it works in theory also; in practice, it didn’t work out quite like that for me… shot placement was absolutely perfect. Bullet failed to do as it was advertised …

2000 ft./s and 1300 foot pounds of energy is bottom of the barrel. And you’re talking about a max load out of that cartridge. Why Max out a cartridge and still be in the bottom half of that bullets optimal impact velocity range… The only reason I can think of is to avoid the lead…. If you took that away, it probably wouldn’t even be on the table.
Like I said it works just fine to a point but 140 monos are built for the seven mag…
Drop down 20 to 30 grains of bullet weight from whatever you’d be shooting in a typical lead core bullet and that’s where you should be shooting your mono. So when you drop down to 120 (7mm- 08) your terrible BC counteracts the increase in velocity. ( it’s like the coffin corner ) Therefore I believe that cartridge is not really, the OPTIMAL choice for monolithic bullets …
You can use them.. just saying why I don’t…
My Wife’s 7mm-08 has shot half a dozen elk and the only time we ever had a problem was when I loaded her 140 TTSX’s…. After that, I started paying a lot of attention to finding bullets that functioned best within the velocities that each cartridge produces … from 0 to 400… that way, I can leave myself the largest possible margin for error…

does the manufacturer say it’ll open at 2000 ft./s? Yes… I’m not so sure…

My Wife shoots a 708 and I shoot a seven mag but I would never shoot the same bullet through both of them again …

I shoot a 140 grain Nosler ET four grains under the maximum charge at 3200 ft./s. At 400 yards you’re looking at 2475 ft./s and 1900 foot pounds of energy. Safe….

Compared to the seven MM 08, for which I have the exact same numbers as you for… 2000’ elevation
2850 ft./s Max charge…
At 400 yards you’re barely over 2000 ft./s and 1300 foot pounds… not within my comfort zone…

I like running e-tips myself because I feed my family, but I’m still not convinced that I’m not sacrificing performance by using them…

Just my 2 cents…

 

[homebase541@]

I personally have 3 elk, 2 deer, and a bear with soup'd innards to defy the idea that 3k fps is in any way necessary for monos. And I imagine we could collect a lot more examples if we started a thread about this.

Oh I’m sure you could….
You’re talking about necessary and I’m talking about optimal…. There’s no way that running those bullets at 3000 ft./s or above doesn’t do a better job at keep you in the middle of your acceptable impact velocity range…
Anybody can shoot whatever they want and they’re probably gonna kill animals, but there is an optimal velocity to get the most bang and lethal range out of your bullet…
For monos that number is significantly higher as is the entire window of expansion…

 

[homebase541@]

I think we’re gonna need a panel comprised of half physics professors and half rednecks that have shot a lot of stuff to settle this…
I’ve been to marriage counseling so I used words like “in my opinion” and “I believe” so that you guys wouldn’t be so offended