Hey Salixco-- we were just talking about the big 22's over at Predatormasters.com. 1 of the guys there was getting about 3400 with the 75 A-Max (BC-- .438) out of that 243 case. Just ran the info. across Exbal Ball. Program, and if coupled with the Burris Ball. Mil-Dot (of which the lower post delivers about 14.5 MOA of correction), with a 250 yd. zero the max. ordinate is 2.1" above line of sight, and it will hit 875 yds. @ the lower post, at least in my area of operation. That's certainly some amazing performance. Of course the wind is always the tricky part-- but actually the most challenging too, and sometimes fun in that regard.

sscoyote are you talking about the .224 texas trophy hunter?? it sounds pretty kewl shooting those 75 amaxs. I don't think I would shoot a deer with it although it seems like alot of texans are using 22's for deer hunting. it does sound like one hell of a long range coyote buster

Yeah that's what he was using-- some sort of 243 or 6mm-based wildcat. I'm wondering where 50 Driver is on this he's 1 of the big experts on these hotrod 22's. I just compared the ballistic of the big 105 A-Maxs out of the .240 Weatherby/6-284 cases, and most of my references say 3200 out of a 26" barrel. That calcs out to about 1 MOA more drop @ 700 yds. BUT .5 MOA less wind than the 22's we're talking about. Trajectory is the easy part, as that's easily compensated for and relatively a heck of a lot more predictable than the wind.

Good choice Mellison. I would have gone with a standard 6mm as well. What twist, barrel length and contour did you pick?

I suggest a recoil pad on the 6mm.

Thanks for the interest. Am using a long action so can fit 107's in the magazine and have them seated near the lands. 1 in 8 twist in a 26 in barrel and a special Douglas varmint contour which is between a 6 and 7. Nice stiff barrel. Hope the 26 in length can squeeze a few more fps out of it.

I've never been a "speed freek", In fact, speed is often the last consideration for my loads. I want accuracy above all else, at almost any cost.



Let me preface my next comment with saying long range for me is 600 yards.



I would stick with the 6mm bores as mentioned above. But here is where I differ: why not the 6mmPPC? It is unquestionably an accurate chambering and you can definitely find a few used guns that only shoot .5" (not MOA) at 200 yards. Speed is fine, but is no substitute for accuracy and consistancy. I've said it here before, you can always make a wind drift chart and bullet path charts are a must for long range shooting of ANY chambering.



Barrel life is longer at the slower 6PPC velocities. Chances are you can find a benchrester who wants to unload their whole rig, gun, dies,bullets, load data, casing, and you will have a very accurate long range rifle capable of amazing accuracy.



JMHO,

JIm

Mellison,
Another vote for the 6m/m Remington. I have an early 40X that really shoots well, mine is technically a .244(1-12) and I love it. The .244 was supposed to be handicapped by not stabilizing bullets over 90gr. I haven't found that to be the case at all. I use the EXCELLENT 85gr.Sierra HPBT in mine for everything from crows to whitetails.
As Seafire mentioned, in the real world it doesn't give up much at all to the .240 Weatherby or the 6/06 and you can find factory ammo at Wally World or most any gun shop.
And barrel life is very good. Dies are a standard off the shelf item as an added plus.
Stepchild

Most of the time my .22-250Rem. is enough rifle for my woodchuck hunting. I can step it up a ways with my 6mm Rem. but I'm not good at picking up targets beyong about 400yds, so anything with a longer reach would pretty well be wasted on me. Age does that to you. Best wishes.

Cal - Montreal

In .22 centerfires, I like a .220 Swift with a fast twist. It delivers those high BC bullets and is amazing in the wind. Normal .22's are dogs in the wind and they also impact remarkably different when the temp changes.

All that said, however, I would get the 6-284.

A lot of guys swear by that 105 A-Max for very LR coyotes out of a bigger 6 with the appropriate twist. I believe 50 Driver has had some experience with that particular bullet-- seems the A-Max is being advertised these days as a "varmint" as well as target bullet.

Truth is i'd like to try a (recoil-proofed) BIG 7mm with that 162 A-Max-- i believe that bullet would get u about as far out as anything else out there-- .625 BC if my memory serves me well. Hey AZ-- aren't u shooting one of those bigger 7's?

I have two 6mm Remingtons that I use for rockchucks along with a 6BR. All 3 have 1 in 8" twist barrels. The two Remmies have a HV and LV barrel and the BR has a #7 Lilja. I find myself using the 6BR more and more quite simply because it's more accurate. With not much chucking time last year the little BR still took a chuck at 473yds. The 6mm's have killed a few chucks in the 5-600yd range but I generally switch to my .30-.338 or 7STW at the extended ranges. The smaller calibers dont tend to launch the chucks quite as well as a big magnum when the yardage gets stretched. There is nothing like watching a rockchuck cartwheel through the air 7-800yds. You can ask several of my buddy's who have seen it happen. They were forced into building rifles of their own

The .22-243 with a Sierra 80 gr. HPBT is a superb LRCK (long range coyote killer), and I am having one built after witnessing its performance. It is especially good in the high winds of western Okla and Tex.

You seem set on .243 caliber for your long range gun and it's a great choice.....I'd be looking to 6.5MM next gun I build but to the 6MMs I'd say that you will spend a lot more money building an AI, SRC, or other wildcat type and in the net result there will be no dissernable difference in the field.

Yes....there will not be a clear difference between a .240 weatherby and a 6MM remington.....not noticeable in the field. Accuracy wins and not velocity.....and the marginal velocity differences are easily lost to the practitioner.

Focus on the things that create accuracy.

U know there's something to be read into those words-- maybe wisdom would be the right terminology-- we just got back from a turkey shoot, in which i was using my 6.5-284 XP pistol. We were shooting out to 600 yds. Guess which gun took all the cookies-- a reworked Rem Sendero in the Plain old .308 Win. I mean nobody could touch this guy. He was running 90% @ 600 yds. on an 8" rectangle, with 168's (slight breeze only). Of course who REALLY knows-- maybe it was just a great shooter....? Seems everytime i see some new whizbanger tho, here comes some guy with a .308/.223/.243 whatever and blows the doors off everybody else...?? Sometimes i wonder if u shouldn't just get a rig that'll get to the desired target yardage with just enuf "ooomph" to get the job done-- that is, a cartrige that's "easy" to work with.

Oh yeah-- guess who came in 2nd @ 600??-- some guy shooting a Savage 110 factory stocked .223 AI with 40 gr. V-Maxes-- with a Simmons scope-- no less.

ss,

No doubt... I use a 308 for almost everything from my 308 Encore pistol and rifle to my 700PPS LTR and my Mike Rock built sniper rifle.

It don't have to say "wildcat" on it to be accurate...

$bob$

It sounds like you pretty much decided, but I went to the .260AI as a long range varminter. With a 100gr NBT @ 3350fps, it's plenty flat shooting out to 600+. I haven't hunted it yet, but I sure want to.