What would you build????

Originally Posted By: BOBTAILSI think I'm set on a 22-243 as of now.

Certainly nothing wrong with a 22-243 or any of its variants, I'm a big fan of the 22-243 Middlestead, but with only a 22 inch tube, the 22-243 pretty much mirrors a 22-250. Just something to think about.
 
Can't believe no one has brought up the 17hmr. Best all around long range varmint cartridge there is. Sorry couldn't help myself. The 22/243 sounds like the ticket.
 
Originally Posted By: coleridgeOriginally Posted By: BOBTAILSOriginally Posted By: 1badsheeDecisions like this are tough.

I think I'm set on a 22-243 as of now.

What speed is plausible for it with the 75s & 22" barrel?

I'm not sure maybe somebody that has quickload can shed some light on this?
 
All my 22/6mm is is a size and load. Has a long neck on it and I've got about 500 rounds through it with good accuracy and no fouling

 
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Originally Posted By: BOBTAILSOriginally Posted By: coleridgeOriginally Posted By: BOBTAILSOriginally Posted By: 1badsheeDecisions like this are tough.

I think I'm set on a 22-243 as of now.

What speed is plausible for it with the 75s & 22" barrel?

I'm not sure maybe somebody that has quickload can shed some light on this?

Staying within SAAMI pressures but close to max, depending on the powder, 3200ish.
 
This is purely opinion but just looking at a 243 vs 6 creed vs 6x47. I am only able to shoot the same amount of powder in my 243 as my buddies are with the 6 creed and 6x47. With the case design difference, my 243 is shooting slower than the other two.
I'm not sure this will be the same results in the .224 versions or not but something to consider.
 
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Originally Posted By: coleridgeOriginally Posted By: BOBTAILSOriginally Posted By: 1badsheeDecisions like this are tough.

I think I'm set on a 22-243 as of now.

What speed is plausible for it with the 75s & 22" barrel?

3300+
 
The 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
 
Originally Posted By: BOBTAILSThats cause the 6x47 is a much more efficent round when put up against a plain 243

That's my point. Would the 22x47 not be just as much more efficient than a 22-243?
 
Originally Posted By: Tim Neitzke22-250 / AI
22x47
22-243

Running 53 - 62 gr Barnes ,just incase a chuppa or bigfoot comes to the call !
wink.gif




Come on Rob...Tell us how it works !
grin.gif
 
Originally Posted By: Tim NeitzkeI get 3000 in a 223 AI 22" Don't know why 3300 can't be had in a 22-243. I know a 24" 22-243 will make 3500+ with 75s

I didn't say you couldn't, but you're going to be throttling it up pretty hard to get there is all.

And 3500+, even with a 24in tube, is going to be well past redline.

My dad has 22-6mm w/26in tube and shoots 75 Bergers. He's standing on the gas pretty good in it to get 3500 fps and actually throttled it back to mid 3400's because it shot better and was easier on primer pockets.
 
Guys I shoot with are getting over 3,400 fps with Berger 80.5 grain bullets in a 22x47 with a 24" tube with no pressure even at 90+ degree weather.
 
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

Good info DAA, lots to consider, thanks. now you got me thinking of a 12 twist and launching 55's lol.
 
Originally Posted By: OK243Originally Posted By: BOBTAILSThats cause the 6x47 is a much more efficent round when put up against a plain 243

That's my point. Would the 22x47 not be just as much more efficient than a 22-243?

It would I'm just not wanting several steps to neck down and turn necks.
 
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