Max range for a .300 whisper...?

[Tiffy]

Was just feeding some info into a ballistics programme and it showed my .300 whisper still doing 400fps at 3000m. which I find hard to believe, a drop of 600 fps over 3km?

Anyone have some data on this?

Cheers

[320pf]

Tiffy,

Here is a link to p pretty good article on the 300 Whisper:

http://www.lasc.us/RangingShotLongWhisper.htm

Your ballistic calculations are correct. J.D. Jones picked up on the fact the sub-sonic high BC bullets do not loose much of their velocity and are less influenced by wind drift.


320pf

[lemmethink]

Just for the hell of it last summer I shot my 300 whisper out to 850 yards. I had to crank the elevation all the way up on the 10x super sniper and still hold over about 4 or maybe 5 dots IIRC. It was a lot of fun as the flight time was a couple of seconds.

I just went to the JBM ballistics sight and punched in a generic 30 cal, 220 gr, 0.5bc bullet travelling at 1000fps muzzle velocity. The "maximum distance" calculator gave a terminal range 4083yds, initial angle 37.5 degrees, terminal angle 56.4 degrees, terminal velocity of 466fps, and a flight time of 28.2 seconds!!! Pretty amazing for a little whisper to carry that far and for such a long hang time. Anyone want to help me figure out a way to test it???

[cr500]

I have read about some people shooting gongs (and a ground hog) with 308s at 3000+ yds, using special scope mounts. Maybe with a Whisper, you could take the shot, hop in the car and drive up to watch the impact.

[jarhead1086]

http://accurateshooter.wordpress.com...ra-long-range/

I never thought of using these for the Whisper, they are high end. If you want cheaper just for grins you can try the external adjustment base that Leatherwood makes.

[interceptor]

Is anyone out there in Whisper land using a 20MOA base for distance rather than cranking on your elevation turret so much?