I remember reading an article many years ago which basically said don't go by energy alone. The author talked about momentum as being the biggest factor in how a bullet penetrates and performs [construction would be in there now as it's improved over the years]. I think its the combination of twist, bore size, and speed[ probably other things I can't remember but you get the point]. He finished his article by saying a 220 swift and a 4570 have approximately 1000lbs of energy at the muzzle and if you were facing a charging cape buff what would you rather have in your hands? Food for thought once the range starts getting out there
Sorry one of those other things I forgot was bullet weight
As was mentioned before I think, energy ftlbs, joules etc isnt the full story its how that energy is dissipated on impact, either instantly as a big explody skin pop, or in a controlled fashion as the bullet travels through the target. So bullet design is a vital component in how far you can shoot as well.
Just switching from photobucket to flickr so this might work? it should be a 400+ yd shot with said 243ai .or my fat fingers and lack of tecno ability could well turn it into a cluster.
https://www.flickr.com/gp/154727983@N04/hj462V
"You'll never find a rainbow if you're looking down" Charlie Chaplin
@ sneeze nice shot, what pill you spitting out and what speed?
"You'll never find a rainbow if you're looking down" Charlie Chaplin
Bullet diameter has a lot to do with killing power as well, not just speed and weight. That's why the big 338's are excellent long range shooters.
Yip as @veitnamcam says, the more sunlight you let in the better
I dont think anyone will argue that a 243 win is better than a 338. I like my 338 Norma a lot and obviously its first call for genuine long range but the little 243ai is a lot easier to carry, shoot, load for and in the right conditions its very effective. Not for beginners but 500yds isnt for beginners with any cartridge.
But really the OP was asking a specific question and wasn't trying to start a which is best thread.
"You'll never find a rainbow if you're looking down" Charlie Chaplin
I'd go for the 4570. Let's face it at 300;yards on a smaller animal with a .243 job done. Now throwing a brick that far and expecting to hit it well that's a whole different story. Not against 243's as they are good and as much as most hunters need to be fair. Had one and liked it and seen a lot used to good effect. Also shot a big stag at a bit over 600 yards with a 270 wsm and 130's. It went down slowly even with a couple of shots in it in the right place. It didn't run but when approached it did get up and ran with another put in at close range. It didn't go far. Point is if I was using 150 gns I'm sure it would have been a different story as they exit animals where the lighter wouldn't and hit harder. Hadn't starting using them then but it was the catalyst
I see what he wants to do and yes a .243 will do it but not on every animal. The biggest factor here is surely what to take and what to leave alone or get closer if possible same as 222/223 users. It's not the skill in hitting the target but the skill in deciding whether it's on in the first place
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