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1000+ yd. 30 Cal. bullet weights

 
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  #8  
Old 07-19-2004, 03:20 PM
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Join Date: Jul 2004
Location: Victoria, Australia
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Re: 1000+ yd. 30 Cal. bullet weights

Jerry's spot-on. Although the options for a 200+ gr in 30 cal bullet are very limited.

In 30 cal the 220 gr MatchKing is the only option out of the brands Jerry suggested. The other bullets only come in weights up to 180 gr.

The 220 gr MatchKing launched at 2966 fps/4300 ft.lbs would hit at 1000 yards with energy 1336 ft.lbs. Drift in a 10 mph crosswind would be 61".

The 180 gr MatchKing launched at 3297 fps/4300 ft.lbs hitting with 1007 ft.lbs with drift of 72".
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  #9  
Old 07-19-2004, 03:38 PM
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Re: 1000+ yd. 30 Cal. bullet weights

I would have to agree with Jerry as well. Stay with 200's or heavier. Wind is a big factor and the more weight the better.
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  #10  
Old 07-19-2004, 11:26 PM
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Re: 1000+ yd. 30 Cal. bullet weights

TexasTH, I would suggest against the Barnes bullets for LR shooting. They would not expand at the low impact vel. Better choices include the Poly tipped bullets like SST/interbond, Nosler BT/accubond, Amax, and Sierra Matchkings.

Also, at long range, wind is your biggest enemy. The light bullets (under 200gr) simply get blown around much more at 1000yds. Compare data on a ballistic program and you will quickly see that you can't go fast enough with a low BC bullet to keep up with a high BC bullet at moderate speed. This is graphically illustrated in the real world.

I would suggest a bullet of 200 gr to 240gr for LR work. They will hit significantly harder and retain their vel much better. Their wind bucking ability can be as much as 40% better when compared to lighter bullets. Flat trajectory is irrelevant as we dial up for the distance. Having the bullet bounce around an extra 6" can lead to a long tracking session.

Jerry
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  #11  
Old 07-20-2004, 08:05 AM
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Join Date: Jul 2004
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Re: 1000+ yd. 30 Cal. bullet weights

Wow, great advise. So with the 300 Wby how far could you shoot the 180 gr.& 165 gr. bullets safely?

Also I have a custom 338-378 Wby. Mag. with another 26" Shilen and a 6.5-20x50 Long Ranch Target Leupold with Mil. Dot reticle.
It drills 250 Barnes X bullets at 3050 fps and shoots 225 X bullets excellent at 3350 fps. What's your take on this rig.
Thanks
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  #12  
Old 07-20-2004, 12:25 PM
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Re: 1000+ yd. 30 Cal. bullet weights

TTH, both rigs are lethal at 1000yds. The problem is can you dope the wind at that range? Also, retained vel is so much higher in a high BC bullet.

Graphic example: I had a 30gibbs which spat out 165gr SST at 3075fps. Shot in the .2 MOA at 250yds. My friend has a 280 Rem which spat out 168gr MK at 2950fps. Also very accurate.

At 750 and 1000yds, the 7mm hit harder and was so much easier to hit with in the wind.

Remember that you are trying to hit a milk jug size target. Misjudge the wind by 1 or 2 MPH and you are going to miss the target.

The higher BC bullet will drift less making that wind doping that much easier and because of the increased bullet weight, will be more effective is not quite in the sweet spot.

Jerry
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  #13  
Old 07-20-2004, 12:36 PM
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Re: 1000+ yd. 30 Cal. bullet weights

Sontel, you also have the 200 grain SMK (not just the 220) with a bc of .56
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