Something different!

[284driver]

I ran your 90 sierra through shooter at 2800. Zero at 200 and it calculated 11.8 moa at 600 so in my neck of the wood, 2800 fps is close on your muzzle velocity according to the elevation input.

 

[M14AMU]

I ran your 90 sierra through shooter at 2800. Zero at 200 and it calculated 11.8 moa at 600 so in my neck of the wood, 2800 fps is close on your muzzle velocity according to the elevation input.

Thanks!

 

[jimmy1937]

I decided to do some comparison between a 69 grain Sierra Match King and the 90 grain Sierra Match King. The BC for the former is 0.305 and the latter is 0.504 in the relative speed range. What stands out for me is that for a 21 grain increase from 69 to 90 the BC has a huge increase.....305 to .504. I estimated that the 69 grain could be driven at about 3300 ft/sec and the 90 grain at a max of 2900 ft/sec, probably a little high on these estimates. But just for comparison, the 90 grain with the much higher BC shows much less drift at 600 yards for the 10 mph crosswind. Time of flight is less, energy is almost double.
Bullet drop is almost the same for the 200 yrd sight in range.

69 grain Sierra Match King BC = .305
Range Velocity Impact Drop ToF Energy Drift
0 3300 -2 0 0 1669 0
100 2959 1 1.91 0.1 1342 1.32
200 2652 0 7.82 0.21 1078 4.07
300 2366 -5.98 18.71 0.33 858 8.98
400 2099 -18.22 35.86 0.46 675 16.42
500 1851 -38.41 60.96 0.61 525 26.85
600 1623 -68.83 96.29 0.79 404 40.84


90 grain Sierra Match King BC = .504
Range Velocity Impact Drop ToF Energy Drift
0 2900 -2 0 0 1681 0
100 2710 1.38 2.38 0.11 1468 1.05
200 2533 0 9.52 0.22 1282 2.93
300 2363 -6.82 22.11 0.35 1116 6.19
400 2201 -19.91 40.96 0.48 968 10.97
500 2045 -40.2 67.01 0.62 836 17.42
600 1895 -68.84 101.41 0.77 718 25.75

 

[Rtheurer]

R Mulhern

Ill be watching this thread with intrest. I can tell you (we) I have NOT had any real luck with the 90gr Mach King. JLK yes, Berger yes but not the Sierra. Normally the Sierra is a tough bullet that performs well at just about any depth and speed. This one however has had issues with Separation Anxiety tring to shoot it out of a 1:6.5 twist 20" 223 service rifle at 600 and 1000 yards. By the time we got it up to speed to overcome any real advatage over the 80gr Match King it was comming apart at the seems per say. This in a polethera of barrels and groove specs for Depth, twist rates and styles. We as the team finally gave up on it. The 90 Berger BT showed the best performance before we dropped the program and went back to the good ole 80gr SMK.

Surely this is not even close to the same application so ill find your results with great intrest. Please keep us posted.

As A side note: When I was first getting into NRA XTC shooting we had a fella shooting Match Rilfe who did what youare doing in the mid to late 90's and he was loosing 69gr Matchkings out of a 26" 22-250... They where a zippen right along!!! That was the last time I had seen him shoot a match. He was older and just kinda quit.

Nice project.
RT

 

[M14AMU]

I've got this AR400 plate set up due west of my home set on the backside of my cornfield at 600 yards. Photo made with camera set at 22X.


AR400 Target by Sharps45 2 7/8, on Flickr

Shooting the 90 gr. Sierra HPBT out of my standard 22/250 with 1-7" ROT the 8" bull is so boring to hit it's no contest....even in 15-18 mph winds and 90% of my impacts always wind up pretty much to center. I started working up the load I'm shooting with 36 grs. H4831SC and now I'm up to 38 grs. with still no signs of pressure and easy bolt lift; no case head expansion or flattened primers. I still haven't gotten a chance to run these through my crony as apparently the guy I loaned it out to thinks it's his and hasn't returned just yet! ;D : :-\ The load 'dispatched' two coyotes last week to coyote heaven! Got to order more bullets!

MERRY CHRISTMAS TO ALL YOU GUYS!!

 

[Snuggie]

Greetings, and Merry Christmas to all! Very interesting thread! Has anyone seen this 22-250 set up at any matches? Seems like it would be preferred over the 223 because you can get almost 500 fps over the 223. Thanks!

 

[M14AMU]

Greetings, and Merry Christmas to all! Very interesting thread! Has anyone seen this 22-250 set up at any matches? Seems like it would be preferred over the 223 because you can get almost 500 fps over the 223. Thanks!

Snuggie308

Most factory rifles come either with 1-12" or 1-14" ROT therefore no interest but I made this one up expressly for shooting the longer/heavier bullets and it works like a charm! 40 & 50 gr. weight bullets are cheaper to shoot but I'd rather opt for having a round that works great at the extended ranges rather than starting out at nanosecond speed only to fall off like a manhole cover and be drifted to hell and back due to being BC deficient!! Just my personal desire!

 

[Todd DuBose]

Snuggie308

Most factory rifles come either with 1-12" or 1-14" ROT therefore no interest but I made this one up expressly for shooting the longer/heavier bullets and it works like a charm! 40 & 50 gr. weight bullets are cheaper to shoot but I'd rather opt for having a round that works great at the extended ranges rather than starting out at nanosecond speed only to fall off like a manhole cover and be drifted to hell and back due to being BC deficient!! Just my personal desire!

You know, I really get a kick out of some people bashing light weight bullets. Nanosecond Speed?? Ha!! I Love It!! What people like you dont understand is tha a Manhole Cover starting out at over 4,000 fps also has a RPM(If you dont know what that is, Look it up) that will kill just as deadly as your BrokeBack Mountain 90 grain bullet if you know how to shoot it. I really dont like bashing anyones stuff but it's time some people Grow Up!! And that's my take on this issue.

 

[M14AMU]

Grow Up!! Yes...that's what I suggest YOU do!

I am. Also, I have been there and done most of what you are talking about. You know being from the Great state of Louisiana you ought to Grow Up and smell whats cooking. The first place is you dont have enough open land to shoot furthur than a turd can float...If you want to pick a caliber to push a heavier bullet in, You first need to pick a bigger caliber unless you are getting to damn old to handle it....Have a nice day and say hello to the Duck Commanders for me...Quack, Quack!!

You're sittin there running your doughnut hole just to see the slobber fly because it's quite obvious you don't know schitt from shineola about the Delta Country of North Louisiana these days! The bulldozers raped this part of the state 40 years ago and there's roughly very little standing timber from Monroe, La. all the way to Vicksburg, Miss., the largest of which would be the Tensas National Wildlife Refuge south of Tallulah, La.! From my back door I can see anywhere from 2 1/2 miles to 5 miles across nothing but flat farm ground. Pine tree Louisiana....we ain't!!

Oh....here's a shot of my range and if your eyes are as wide as your mouth it's quite possible that you can cast them down this road to my range and at the far end pick up a white object which is a 72"x72" steel mainframe plate which is affixed with a 20" AR400 bull to the middle thereof! I built this 30 years ago when I was shooting and training for Palma and NMC shooting. This photo made from my 1500 yard line which is at the north side of my lawn!


1500yd by Sharps45 2 7/8, on Flickr

 

[Snuggie]

Nice place Mulhern!! Down in south La we have a 600yd range where we shoot NRA F-Class. I also belong to a 300yd range. Seems I started some BS here! I happen to have a Rem-700V that prints 1/4 in at 200yds with the 40 grainers. I initially put it together for some p-dog blasting but never got to go on the trip. I could easily convert with a Krieger 1:6.5 for the 90 grainers and was wondering if anyone was shooting any matches with that combination.

 

[M14AMU]

Nice place Mulhern!! Down in south La we have a 600yd range where we shoot NRA F-Class. I also belong to a 300yd range. Seems I started some BS here! I happen to have a Rem-700V that prints 1/4 in at 200yds with the 40 grainers. I initially put it together for some p-dog blasting but never got to go on the trip. I could easily convert with a Krieger 1:6.5 for the 90 grainers and was wondering if anyone was shooting any matches with that combination.

Snuggie308

My views are MY VIEWS; my opinion....everyone has one but it just so happens that my view of the lighter bullets in the 22/250 ARE NOT AS EFFICIENT for the style of shooting that I consider my cup of tea. We have lots of coyotes up here in the delta country and if I see one at 600 yards or so it's my opinion that the heavier bullets will work best for me....out of my particular rifle! I have 6.5x47 Lapua to shoot as well as 7MM WSM but this particular rifle in 22/250 is a dream to shoot with the heavier bullets and gives way better than average accuracy. I don't believe you'd need a 1:6.5 ROT to shoot the 90 grainers. Matter of fact I think a 1:8" twist would work quite well.

 

[Snuggie]

Cool! Thanks for the input man!

 

[RStewart]

To answer an earlier question, I have not seen anyone shooting the .22-250 at any of our matches. But, that doesn't mean I don't think it couldn't probably hold it's own in F-Open. The 6mm guys are shooting bullets with a little more weight to them (105 grain to the 90 grain), but the 250 case capacity should allow it to be loaded to some impressive muzzle velocities.

I shoot a .223 in competition, so I am used to dealing with pretty good drifts. According to my testing and the JBM Calculator, an 80 grain SMK travelling 2812 fps has 21.4" drift at 600 yards. A Berger 90 VLD travelling at only 2632 fps (180 fps slower than the 80) has 5.4" less drift at 600 than the 80 SMK. 21.4" v 16"

YMMV