What is the estimated maximum effective range of the 300 BLK

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BriggsRi
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What is the estimated maximum effective range of the 300 BLK

Post by BriggsRi » Thu Oct 07, 2010 8:41 pm

I know that this maybe unknown, too soon, etc, but I'm just looking for an estimation.

My intent is to use this for hunting small to medium sized game - range will be max 200 yards.

What set-up would be best:

9" bbl with 220 gr or 155 gr

or

16" bbl with 220 gr or 155 gr

From the ballistics charts the two different barrel lengths provide relatively close ballistics data +/-. If the 9" bbl upper does not loose too much punch out to 200 yards, than I would really prefer this system.

Just looking for some general feed back / comments.

Thanks

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Re: What is the estimated maximum effective range of the 300

Post by 300Blk » Thu Oct 07, 2010 9:06 pm

I would do a 16 inch with 123 grain ammo for now, or have someone make some expanding ammo.

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Re: What is the estimated maximum effective range of the 300

Post by BriggsRi » Thu Oct 07, 2010 9:10 pm

Any thoughts on 100 yards and in?

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Re: What is the estimated maximum effective range of the 300

Post by silentbushmaster » Thu Oct 07, 2010 9:54 pm

Try this, it is a close indicator. http://www.jbmballistics.com/cgi-bin/jbmtraj-5.1.cgi
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Re: What is the estimated maximum effective range of the 300

Post by BriggsRi » Thu Oct 07, 2010 10:36 pm

silentbushmaster, thanks!

So basically with a 9" bbl, 220gr bullet, 1010 velecity - I can estimate 460 Ft lbs at 100 and 427 ft lbs at 200 yards.

or

9" bbl, 155gr bullet, 1785 velecity - I can estimate 936 Ft lbs at 100 and 793 ft lbs at 200 yards.

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Re: What is the estimated maximum effective range of the 300

Post by silentbushmaster » Thu Oct 07, 2010 10:43 pm

BriggsRi wrote:silentbushmaster, thanks!

So basically with a 9" bbl, 220gr bullet, 1010 velecity - I can estimate 460 Ft lbs at 100 and 427 ft lbs at 200 yards.

or

9" bbl, 155gr bullet, 1785 velecity - I can estimate 936 Ft lbs at 100 and 793 ft lbs at 200 yards.
This is a close estimate for a 220 grain Sierra Match King at 1040 fps at a BC of .608 due to speed. I did'nt run it beyond 300 as that is about max effective range at that speed. While you can go beyond that, it takes some practice.
Calculated Table
Range Drop Drop Windage Windage Velocity Mach Energy Time Lead Lead
(yd) (in) (MOA) (in) (MOA) (ft/s) (none) (ft•lbs) (s) (in) (MOA)
25 2.0 7.5 0.0 0.0 1033.2 0.916 260.7 0.072 0.0 0.0
50 3.4 6.5 0.0 0.0 1025.5 0.909 256.8 0.145 0.0 0.0
75 2.7 3.5 0.0 0.0 1018.1 0.902 253.2 0.219 0.0 0.0
100 -0.0 -0.0 0.0 0.0 1011.0 0.896 249.6 0.293 0.0 0.0
125 -4.9 -3.7 0.0 0.0 1004.0 0.890 246.2 0.367 0.0 0.0
150 -11.9 -7.6 0.0 0.0 997.2 0.884 242.9 0.442 0.0 0.0
175 -21.1 -11.5 0.0 0.0 990.7 0.878 239.7 0.517 0.0 0.0
200 -32.5 -15.5 0.0 0.0 984.3 0.872 236.6 0.593 0.0 0.0
225 -46.1 -19.6 0.0 0.0 978.0 0.867 233.6 0.670 0.0 0.0
250 -62.1 -23.7 0.0 0.0 971.9 0.861 230.7 0.747 0.0 0.0
275 -80.3 -27.9 0.0 0.0 966.0 0.856 227.9 0.824 0.0 0.0
300 -100.9 -32.1 0.0 0.0 960.2 0.851 225.1 0.902 0.0 0.0

Same info, but for a Hornady 110 V-Max with a BC of .290 @ 2250 fps.
Range Drop Drop Windage Windage Velocity Mach Energy Time Lead Lead
(yd) (in) (MOA) (in) (MOA) (ft/s) (none) (ft•lbs) (s) (in) (MOA)
25 -0.4 -1.7 0.0 0.0 2219.4 1.967 1202.9 0.034 0.0 0.0
50 0.2 0.3 0.0 0.0 2184.4 1.936 1165.3 0.068 0.0 0.0
75 0.3 0.4 0.0 0.0 2149.8 1.905 1128.6 0.102 0.0 0.0
100 -0.0 -0.0 0.0 0.0 2115.4 1.875 1092.8 0.137 0.0 0.0
125 -0.8 -0.6 0.0 0.0 2081.4 1.845 1057.9 0.173 0.0 0.0
150 -2.1 -1.3 0.0 0.0 2047.7 1.815 1023.9 0.209 0.0 0.0
175 -3.9 -2.1 0.0 0.0 2014.3 1.785 990.8 0.246 0.0 0.0
200 -6.3 -3.0 0.0 0.0 1981.2 1.756 958.6 0.284 0.0 0.0
225 -9.2 -3.9 0.0 0.0 1948.5 1.727 927.2 0.322 0.0 0.0
250 -12.7 -4.8 0.0 0.0 1916.1 1.698 896.6 0.361 0.0 0.0
275 -16.7 -5.8 0.0 0.0 1884.1 1.670 866.9 0.400 0.0 0.0
300 -21.4 -6.8 0.0 0.0 1852.4 1.642 838.0 0.441 0.0 0.0
I feel this would be your choice under 200 yards unless you just want to go the suppressed route.
Last edited by silentbushmaster on Fri Oct 08, 2010 7:38 am, edited 1 time in total.
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Re: What is the estimated maximum effective range of the 300

Post by silentbushmaster » Thu Oct 07, 2010 10:57 pm

If you are going to hunt with this under 200 yards. I would go with a lighter bullet say in the 110 grain weight and get your speed up as high as possible. While I have killed several deer with a 240 grain Match King at under 1040 fps, it has mixed results at distance. Under a hundred yards it is kind of like pulling the plug on a fan and watching it wind down. Shot placement is everything with a 240 at slower speeds. I have dropped them in their tracks if shot in the neck, spine, or head. A scope with Mil dots helps alot for quick holdover, but longer more precise shots dial in your dope and shoot.

Head shots beyond 100 yards are fairly hard on smaller animals, but can be done. 300-221
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Re: What is the estimated maximum effective range of the 300

Post by BriggsRi » Fri Oct 08, 2010 7:39 am

silentbushmaster thanks again!

I'm not sure what's going on, but my Ft LBS of energy seem to be half of what your getting for the same data plugged in.

My goal is to have a light weight, compact, quiet system, for close to med range predator hunting up to medium sized deer.

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Re: What is the estimated maximum effective range of the 300

Post by silentbushmaster » Fri Oct 08, 2010 7:48 am

If you want quiet, go with a 220 or 240 grain load suppressed. It has the ability to put game down with good shot placement. Thanks
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Re: What is the estimated maximum effective range of the 300

Post by BriggsRi » Fri Oct 08, 2010 7:54 am

Sounds like the 16" bbl would be optimum over a 9" bbl or is the Ft Lbs of energy at close range a wash?

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