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6MM bullets killing ability?

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Unread 01-08-2005, 08:51 AM
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Join Date: Sep 2004
Location: on the rifle range in Utah
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6MM bullets killing ability?

I have been running a ton of bullets through the ballistic programs trying to figure out which 6mm bullets to shoot in my 6BR and my 6 Dasher fast twist. The 75 vmax seems to have the edge in the BR for 700 yard shots and the 95 grain Berger VLD has the edge in the Dasher. But from previous experience with Bergers of smaller calibers at long range, I wonder if they will explode rockchucks or just poke through them. Has anyone fired the 95 Vld at chucks at around 1000 yards?? I would be very interested in your experiences!
If they don't kill them well, I'll try 105 amax. Anybody killed chucks with them at 1000??
Thanks! --goodgrouper [img]/ubbthreads/images/graemlins/grin.gif[/img]
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Unread 01-08-2005, 09:16 AM
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Re: 6MM bullets killing ability?


I have not used the 95 gr berger but I have tested the 105 gr Berger, 105 gr A-Max and the 107 gr SMK in my 6mm-284.

THe Berger and A-Max bullets were extremely accurate until around 3300 fps and then the 1-8 twist and high velocity took their toll on the thin jacketed bullets. The 107 gr SMKs thicker jackets survived up to 3550 fps accurately.

As far as on game performance on chuck, basically what I built this rifle for. I would say the 105 gr A-Max performed the best at ranges past 800 yards.

The Bergers and the Sierras performed similiarly at ranges out to 1000 yards. That being if you did not get a chest or head impact, the chuck would probably get down in his den.

At a full 1000 yards the A-Max did seem to open things up more but the slightly lower B.C. combined with the lower starting velocity really did not help performance.

I ended up using the 107 gr SMK simply from an accuracy standpoint. At 500 yards and out, it just held tighter groups in my rifle. Had I been using a 1-9 twist with these high velocities, the A-Max would probably be the bullet to use.

At ranges close to 1000 yards, I have found all the 6mm bullets lacking in game stopping ability without a solid upper body hit.

Remember this was out of a fast twist 6mm-284 so I really do not know how they will perform at the lower velocities of your two 6mm rounds.

I would imagine you better be looking for head impacts with all the bullets if the chuck is close to its den.

Just my experience,

Good Shooting!!!

Kirby Allen(50)
Kirby Allen(50)

Allen Precision Shooting
Home of the Allen Magnum, Allen Xpress and Allen Tactical Wildcats and the Painkiller Muzzle brakes.

Farther, Faster and Flatter then ever before.

Web Page: www.apsrifles.com

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Unread 01-14-2005, 11:34 AM
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Join Date: Sep 2004
Location: Nevada
Posts: 835
Re: 6MM bullets killing ability?

Keep the wind into your face, never walk in the open, sit and wait them out they will be back in 10-15 minutes. I've never had to shoot at one much over 200 yards. Even with my 1000 yard bench rest 7mm STW I don't try for Prairie Poodles at a 1000 yards.

The whole idea of, "I must have winged him and it crawled down it's hole." If it's not a clean kill and doubt if your scope can really see them at 1000 yards why even do it?

This is a 6mm .346 bc 100 gr BT Do you know how high above the target 330 inches is with a "0" at 200? 1100 fps won't make a bullet blow up!

Range Velocity Energy Momentum Drop Windage Lead Time
(yards) (ft/sec) (ft-lbs) (lbs-sec) (inches) (inches) (inches) (sec)
0 3209.8 2287.5 1.43 -1.5 -0.0 0.0 0.000
100 2926.1 1901.0 1.30 1.3 0.0 0.0 0.098
200 2659.7 1570.6 1.18 -0.0 0.0 0.0 0.206
300 2409.3 1288.9 1.07 -6.2 0.0 0.0 0.324
400 2173.9 1049.3 0.97 -18.5 0.0 0.0 0.455
500 1951.0 845.1 0.87 -38.1 0.0 0.0 0.601
600 1743.2 674.7 0.77 -66.9 0.0 0.0 0.764
700 1552.3 535.0 0.69 -107.2 0.0 0.0 0.946
800 1382.0 424.1 0.61 -162.0 0.0 0.0 1.152
900 1237.8 340.2 0.55 -235.0 0.0 0.0 1.381
1000 1123.7 280.4 0.50 -330.8 0.0 0.0 1.637
.270 Ackley improved 29 inch 1.250 dia. target barrel 7mm STW 28 inch 1.250 target barrel. I also love my .458 mag for varmints and the biggest game in the world.
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Unread 01-14-2005, 12:11 PM
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Join Date: Dec 2001
Location: Long Island, New York
Posts: 2,499
Re: 6MM bullets killing ability?

Instantaneous kills out past 800yrds were no problem with the 75gr A-Max in .224 dia. For terminal performance, I would imagine that a fast 6mm A-Max would work even better.

According to Sierra, their SMK bullets are "likely" to pencil through small varmints due to their heavy jackets. I achieved better accuracy in my rifle with the A-Max bullets so the SMK's are just sitting on the bench.

The JLK bullet is as accurate as the SMK's, if not better, but are said to be more frangible. Their BC should be higher than the SMK bullet too. They may be just the ticket for the type of use that you mentioned.

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