.260 vermin control

[gbal]

Hunter,oops-there is an error in the 22/250 velocity,of course-3670 fps would be more representative.

Corrected and clarified below,but thanks for noting this.There are at least 30 US 55g 223 loadings,and 10 22/250 55g loadings (and some 88 loads for 223,and 29 55 22/250 ones.Neither total includes Euro ones.)

 

The data can genuinely vary-how does that work- well,the same weight of bullet can and does have different BC values-there are quite considerable differences based on design (and also small drops in G1 BC as velocity reduces) eg here are two 55g ones : Nosler 55g Ballistic Tip BC .268;and Remington 55g PSP(pointed soft point) BC .198. BC differences will cut in noticeably around 350y,though masked by good velocity before that.....see below.

 

Absolute comparison is sometimes possible,if both calibers are loaded with the same bullet by the same company,ideally. But given the wide variety,there are also some differences.(It is even more so with reloading,because there are no pressure controls,or consistent velocty measures or....etc etc....let's be kind and call them "Custom Loads",not SAAMI;so not directly comparable.

 

OK,here's the tidy version:

 

Fed 223 55g Nosler Ballistic Tip BC .268 @3240 fps +1.4 0 -6.8 - 20.8

 

Fed 22/250 55g Ballistic Tip BC .268 @3670fps +1.5 0 -5.1 -15.5

 

 

Rem 223 55g SP BC .198 @3240 +1.6 0 -8.2 -26.1

 

Rem 22/250 SP BC .198 @ 3680 +1 0 -6 -19.1

 

 

The general conclusion holds quite well....though both velocity and BC have effects.

 

Out to about 350y velocity matters more.

 

After 350y ,BC takes over.

 

And for this post's focus,there isn't a lot in drop differences to 300 yards,given the above (3.1" between best/worst of the above 55g options. There isn't much to go on with bullets over 60g-not SAAMI loaded for 22/250).

 

g

[hunter686]

Hunter,oops-there is an error in the 22/250 velocity,of course-3670 fps would be more representative.

Corrected and clarified below,but thanks for noting this.There are at least 30 US 55g 223 loadings,and 10 22/250 55g loadings (and some 88 loads for 223,and 29 55 22/250 ones.Neither total includes Euro ones.)

The data can genuinely vary-how does that work- well,the same weight of bullet can and does have different BC values-there are quite considerable differences based on design (and also small drops in G1 BC as velocity reduces) eg here are two 55g ones : Nosler 55g Ballistic Tip BC .268;and Remington 55g PSP(pointed soft point) BC .198. BC differences will cut in noticeably around 350y,though masked by good velocity before that.....see below.

Absolute comparison is sometimes possible,if both calibers are loaded with the same bullet by the same company,ideally. But given the wide variety,there are also some differences.(It is even more so with reloading,because there is no pressure controls,or consistent velocty measures or....etc etc....let's be kind and call them "Custom Loads",not SAAMI;not diresty comparable.

OK,here's the tidy version:

Fed 223 55g Nosler Ballistic Tip BC .268 @3240 fps +1.4 0 -6.8 - 20.8

Fed 22/250 55g Ballistic Tip BC .268 @3670fps +1.5 0 -5.1 -15.5

Rem 223 55g SP BC .198 @3240 +1.6 0 -8.2 -26.1

Rem 22/250 SP BC .198 @ 3680 +1 0 -6 -19.1

The general conclusion holds quite well....though both velocity and BC have effects.

Out to about 350y velocity matters more.

After 350y ,BC takes over.

And for this post's focus,there isn't a lot in drop differences to 300 yards,given the above (3.1" between best/worst of the above 55g options. There isn't much to go on with bullets over 60g-not SAAMI loaded for 22/250).

g

It's ok this time George! But next time it shall be a public linching! ;-)

[Furyan]

Would a 85gr .264 sierra be good for Foxing , sorry not owning a 6.5 before and i found these , surely theses would be better at night than slinging heavier bullets at night ?

 

correct me if i am wrong.

[gbal]

Furyan,there is no doubt at all that a suitable construction bullet from a 6.5 will be terminally effective on fox,day or night,with adequate bullet placement. That woud include your Sierras,perhaps they are the older soft point design;they work just fine.

 

IF there is an issue-and backstop is highly relevant,though not easy to see in the dark always?-it is about excessive energy being released. The 6.5 bullets of whatever weight will generate about 1900 ft lb at 100y,considerably more than the very adequate 223 with just under 1000 ft lb (near enough ,half the potentially misdirected mayhem;-in each give or take a hundred ft lb or so depending on load-these all being SAAMI factory loads to keep it a fair comparison).

 

So a lighter bullet will 'reduce' energy a tad,but IF this issue is a concern,the real question is about appropriate cartridge for the context; I take the backstop point,of course,subject to being able to visually check it-but even then the 6.5 bullets will,on balance,be more likely to penetrate a marginal backstop,as they have roughly twice the energy.That after all,is why they are legal for large deer,and 223 is not.

 

Better by far ,of course a safe shot with the more powerful cartridge,than a marginal shot with the less powerful,but that is not the issue. The same shot with the more powerful cartridge will always carry more potential risk,though 'ideally' that risk can-indeed must- be reduced to near zero for both.

 

Using a cartridge with way too low energy is of course,often ineffectve and simply unethical,as well as unsatisfactory;nor does it guarantee safety.

 

gbal

[Grum87]

Would a 85gr .264 sierra be good for Foxing , sorry not owning a 6.5 before and i found these , surely theses would be better at night than slinging heavier bullets at night ?

 

correct me if i am wrong.

The 85gr hollowpoint would no doubt be catastrophic for the fox, as are the 95gr Vmax.

[Furyan]

Thank gbal i was offered some to try , i might just stick to finding a 6mm for my foxing .