Home Forums Hunting & Shooting Long Range Hunting 7mm Wby and LRAB results...........

I'm glad this wound down!!

I actually like these threads.

This is how you learn things, even if it's minutiae. The only thing in this thread I'm thankful for is that with multiple Weatherby rifles and chamberings I've only had one that shot bad and it is a Winchester M70 of all things in .300.

Maybe if it was a 7 in M700 I wouldn't have that problem.

I've learned a lot about internal ballistics that I never knew. Threads like this are great if people stay civil and discuss matters.

3-4g

the difference between a 7RM and a 7WB
the difference betwixt a 7WB and Mashburn

Imagine what that same 3-4g capacity increase could do in the smaller 280 case.....:)

I guess you don't have to imagine it if you have a Nosler book...have a 7RM and a 7WB throated same with Nosler 140BTs, both with Douglas SS tubes. Have never owned a real WB but the advantage for these two goes to the WB.

In my Remington factory 7 Mag, 66g of IMR 4350, Rem case, 9 1/2 primer velocity on a 140g Accubond is 3250, with tiny groups. I don't have pressure issues on this load either.

Interesting stuff.

The 150 Ballistic Tip has proven to be very accurate in my factory 24" 7 Rem Mag also.

63 grs of H4350 gives me just over 3100 avg.

And a 160 Accubond pushed with 70 grs of Rel 25 has the same point of impact at 327 yards.

I haven't chronyed this load yet.

Hey Keith:
Did you put a dozen on the pole this year?

I may have missed it, but did you ever do any more confirmation of the BC's?

Good question Smoke,

I saw where scenar said the claimed BC for 129 Gr. 6.5 came up well short in the testing he did.

Just as to my own data, I recently shot several 7mm Wby rounds out of my Wby Ultralight Weight through my ProChrono, and I fell in love again with CorBon:

7MM WBY: Nosler Custom 160gr AB (26� barrel) (mfr: 3050 fps)
2,911 fps
2,936 fps
2,917 fps
2,943 fps
2,930 fps
2,936 fps
2,931 fps
AVG: 2,929 fps
FPE: 3,048 ft-lbs

7MM WBY: Weatherby 160gr AB (26� barrel) (mfr: 3050 fps)
2917 fps
2962 fps
2930 fps
AVG: 2,936 fps
FPE: 3,063 ft-lbs

7MM WBY: Weatherby 140gr TSX (26� barrel) (mfr: 3250 fps)
3079 fps
3137 fps
3167 fps
3182 fps
AVG: 3,141 fps
FPE: 3,067 ft-lbs

7MM WBY � CORBON 160gr TSX (26� barrel) (mfr: 3200 fps)
3,252 fps
3,228 fps
3,244 fps
3,228 fps
AVG: 3,238 fps
FPE: 3,725 ft-lbs

This is consistent with my chrono�s reception of CorBon .340 Wby rounds:

.340 WBY: CorBon 225gr TTSX (26� barrel) (mfr: 3100 fps)
3159 fps
3161 fps
3149 fps
3182 fps

CB is the only ammo I have found that consistently shoots above the specs. The Nosler Ammo in 7mm Wby, .340 Wby, and .375 Wby is however very consistent and accurate.

Just wanted to add,-

I knew JB was a smart fella but damn... I've learned a lot from this thread.

I also respect the heck out of Bob's opinion on just about anything and can certainly see both sides of the issue.

The info in this thread is what makes this place worth visiting and I'm glad we have folks like John & Bob.

what they know about rifles & cartridges would take a lifetime to learn and I'm way too lazy, so it's nice to cheat off 'em.

Maybe SU will see this and chime back in......

Rembo:

"Interesting stuff.

The 150 Ballistic Tip has proven to be very accurate in my factory 24" 7 Rem Mag also.

63 grs of H4350 gives me just over 3100 avg.

And a 160 Accubond pushed with 70 grs of Rel 25 has the same point of impact at 327 yards.

I haven't chronyed this load yet"

Typical loads for most of the Rem 700's that I have owned. The Win mag primer with the R#25 shrunk the groups to less than 1/2", velocity is shocking, primer pockets in Rem brass don't last long.

The BC's work spot on for me and I just tested them out to 1,200 yds.

Thanks. You didn't by chance test the 7 mm 150's, did you?

G1 or G7? Thanks!

G1

Have not developed the 150's yet.

Gotcha, thanks!