Originally Posted By: DAAThe 75 Amax @ 3300 isn't exactly a point and shoot to 3-400 though. Not even close, really. Can play with the numbers some, site height makes a real difference, but using a standard 1.5 site height and even allowing for a 5000' altitude, you're not even getting point and shoot to 300. Zeroed for MPBR on a 4" target (240 yards), your 8" low at 300, 19" low at 400. That's a long ways from what I thought you said you wanted?
If you really want point and shoot to 350, you're going to have to think velocity, which means lighter bullets.
You'll also need to think about terminal performance too though. As a for instance, just running a .20 caliber 32 Vmax at 4500 fps is plenty flat, point and shoot, but from my not inconsiderable experience with that exact combo, it's totally suck azz coyote killing load. The big twenties are what I struggled with the most, getting decent terminal performance on coyote to go with the laser flat trajectory. Have two combos that both work though. One is pushing a custom and quite sleek 38 gr. at ~4250 fps, the other is launching the 39 BK at 4400 fps. I really though the BK at that velocity would be a major failure, but, it surprised me. Just have to go out and kill some coyotes and see for yourself with this stuff.
Some other combos I run to do what you were talking about - point and shoot to over 300, or, to put it the way I normally talk about it, going all out for extreme MPBR, are a .17 30 gr. @ ~ 4100 fps and a 6mm 55 NBT @ ~4200 fps.
All of these get you out around 325 to 350 MPBR on a 4" target, a hundred yards further "point and shoot" than the 75 Amax @ 3300. No comparison, really. They run about 6" low at 400. Still better than your proposed combo does at 300.
To really get what I thought you said you wanted, I'd run a 12 twist in the .22-243 and try the 55BT. If you can get it in the neighborhood of 4100 from a 22" barrel, which, I just can't say, but if you can, it will put you right there with most of the combos I have that are mentioned above. And that bullet, at that velocity, is a well proven terminal performer on coyote.
Just idle ramblings. Not really trying to talk you, or anyone else into anything. I've shot a ton of 75 Amax at 3200 to 3500 fps, it's neat, cuts wind almost like magic. Has plenty of useful applications. But, an MPBR monster, it ain't...
- DAA
don't know about 20 cal blitzkings but when I ground all the different 22 cal bullets I had the sierras always had the thickest jackets, gameking, varmint, match, blitz. maybe that is why the 20 BK's work.
