Outstanding Range Results!

[ScreaminEagle]

Well as you guys know, I was worried about getting my rem 700 sps 22-250 to shoot. Well I added a timney trigger and hogue overmolded stock(just until my new one comes from richard's). Today I shot 6 different loads in hopes of finding a good one. I was not dissapointed! These are all 5 shot groups at 100 yards. All loads are with 52gr Sierra HPBT, win brass, and cci 200 primer.

First load tested was 38gr. of H414 yielding a group of .348"
2nd Load- 34.5gr of Varget yielding a group of .557"
3rd- 38gr H380 with .938" (worst powder in this rifle)
4th- 34.5gr IMR 4064 with .309" group
5th- 35 gr IMR 4320 with .279" group! (Best load of the day)
6th- 33gr of IMR 3031 with .320" group

Top three powders are IMR 4320, IMR 4064, and IMR 3031. I may not try 3031 again as I have heard it is temp sensitive, but the other two powders are killer! This gun seems not to like Hodgdon powders as much , but still groups good. I may buy a sample of IMR 8208XBR and give it a try too!

 

[ScreaminEagle]

cont.

 

[ScreaminEagle]

...

 

[ScreaminEagle]

This is all just initial testing but I am confident that I can get a load that shoots one hole groups if i do my part.

 

[SJB358]

SE, seems like the work on the Remington really paid off. Hard to tell which is best out of those three really good ones. Time to run them through a chrono or put them out at 200 yards and see what they do! Great shooting! Scotty

 

[Guest]

Very nice! I can't help but notice, though, that you missed the dime ever time!

 

[DrMike]

It is always satisfying to see accuracy after working diligently on a fine weapon system. Congratulations on a job well done.

 

[ScreaminEagle]

SE, seems like the work on the Remington really paid off. Hard to tell which is best out of those three really good ones. Time to run them through a chrono or put them out at 200 yards and see what they do! Great shooting! Scotty

Scotty, I plan on using the top two powders 4320 and 4065 plus that new IMR 8208xbr for the next series of tests. I will load each powder type in .5 gr increments to 1 gr over max in each powder. As I shoot I check for pressure signs. The point when I see pressure signs is my max load for that gun. I will shoot each string through chrono and pick the best of the best.

 

[ScreaminEagle]

It is always satisfying to see accuracy after working diligently on a fine weapon system. Congratulations on a job well done.

Thanks DrMike. I was positive that this gun wouldn't shoot but all it took was a trigger job and stock change. Any way you could tell me what kind of speed i can get out of IMR 4320, 4064, and 8208xbr? It looks like the 4320 isn't that fast.

 

[ScreaminEagle]

Very nice! I can't help but notice, though, that you missed the dime ever time!

I tried and tried but it kept jumping out of the way! :mrgreen:

 

[DrMike]

ScreaminEagle,

Barrel length? Bullet and weight? Provide this and I'll give you a QL sample. Know that the projected velocities are theoretical and must be verified. Velocities changer depending on a variety of factors, many of which you are not able to control.

 

[SJB358]

I've read alot of good things about 8208. Seems like a great powder and since it is a stand by benchrest powder used by alot of folks, I tend to think it would be awesome in a 22-250. Scotty

 

[C.Smith]

That are certanly promising results right there. I'd be proud to put my name next to any of them.

Corey

 

[ScreaminEagle]

ScreaminEagle,

Barrel length? Bullet and weight? Provide this and I'll give you a QL sample. Know that the projected velocities are theoretical and must be verified. Velocities changer depending on a variety of factors, many of which you are not able to control.

DrMike, It is a 26" barrel, 1-14" twist. Bullet Sierra 52gr HPBT. CCI 200 primer. If I could get a sample for IMR 4320 and IMR 8208XBR that would be sweet! Thanks

 

[JD338]

SE

Nice shooting! The IMR 4320 load looks great. What speed are you getting?

JD338

 

[DrMike]

Here you go.

Cartridge : .22-250 Rem. (SAAMI)
Bullet : .224, 52, Sierra HPBT MatchK 1410
Useable Case Capaci: 40.813 grain H2O = 2.650 cm³
Cartridge O.A.L. L6: 2.350 inch = 59.69 mm
Barrel Length : 26.0 inch = 660.4 mm
Powder : IMR 4320

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms

-20.0 82 30.40 3158 1152 32391 7610 90.1 1.258
-18.0 84 31.16 3234 1208 34611 7839 91.4 1.225
-16.0 86 31.92 3310 1265 36984 8058 92.6 1.193
-14.0 88 32.68 3385 1324 39518 8267 93.8 1.157
-12.0 90 33.44 3461 1383 42229 8465 94.8 1.123
-10.0 92 34.20 3536 1444 45131 8650 95.8 1.089
-08.0 94 34.96 3611 1506 48236 8823 96.7 1.058
-06.0 97 35.72 3686 1569 51563 8982 97.5 1.027
-04.0 99 36.48 3761 1633 55132 9126 98.1 0.998
-02.0 101 37.24 3835 1698 58960 9254 98.7 0.969 ! Near Maximum !
+00.0 103 38.00 3908 1764 63076 9365 99.2 0.942 ! Near Maximum !
+02.0 105 38.76 3981 1830 67500 9459 99.5 0.915 !DANGEROUS LOAD-DO NOT USE!
+04.0 107 39.52 4054 1898 72264 9535 99.8 0.890 !DANGEROUS LOAD-DO NOT USE!
+06.0 109 40.28 4125 1965 77389 9593 100.0 0.865 !DANGEROUS LOAD-DO NOT USE!
+08.0 111 41.04 4196 2034 82886 9631 100.0 0.841 !DANGEROUS LOAD-DO NOT USE!
+10.0 113 41.80 4267 2102 88813 9659 100.0 0.818 !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 103 38.00 4066 1909 74836 9079 100.0 0.879 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 103 38.00 3688 1571 52051 9207 94.3 1.024

Cartridge : .22-250 Rem. (SAAMI)
Bullet : .224, 52, Sierra HPBT MatchK 1410
Useable Case Capaci: 40.813 grain H2O = 2.650 cm³
Cartridge O.A.L. L6: 2.350 inch = 59.69 mm
Barrel Length : 26.0 inch = 660.4 mm
Powder : IMR 8208 XBR

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms

-20.0 77 28.80 3173 1163 33645 7530 93.0 1.257
-18.0 78 29.52 3245 1216 35832 7731 94.1 1.225
-16.0 80 30.24 3316 1270 38152 7923 95.1 1.192
-14.0 82 30.96 3387 1325 40612 8105 96.0 1.157
-12.0 84 31.68 3457 1380 43219 8277 96.8 1.125
-10.0 86 32.40 3527 1437 45983 8438 97.5 1.094
-08.0 88 33.12 3597 1494 48914 8586 98.1 1.064
-06.0 90 33.84 3665 1551 52022 8722 98.7 1.035
-04.0 92 34.56 3733 1609 55318 8845 99.1 1.008 ! Near Maximum !
-02.0 94 35.28 3801 1668 58816 8954 99.5 0.981 ! Near Maximum !
+00.0 96 36.00 3867 1727 62528 9049 99.7 0.955 ! Near Maximum !
+02.0 98 36.72 3933 1787 66471 9128 99.9 0.931 !DANGEROUS LOAD-DO NOT USE!
+04.0 100 37.44 3998 1846 70661 9193 100.0 0.907 !DANGEROUS LOAD-DO NOT USE!
+06.0 101 38.16 4063 1906 75116 9246 100.0 0.884 !DANGEROUS LOAD-DO NOT USE!
+08.0 103 38.88 4126 1966 79857 9294 100.0 0.862 !DANGEROUS LOAD-DO NOT USE!
+10.0 105 39.60 4189 2026 84906 9341 100.0 0.840 !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 96 36.00 4003 1850 72956 8744 100.0 0.895 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 96 36.00 3673 1558 52187 9030 96.2 1.035

 

[SJB358]

Wow, I might need to good around with those two. 3900+ out of 50gr'er bullets! Some serious spat factor! I have a ton of 50gr BT's also, so I might as well build something fun to shoot. The 60gr PT's are the hunting bullet. Scotty

 

[joed49]

I've been looking to try the IMR8208 myself. I'm not quite satisfied with Varget accuracy so have been looking for something else. Another that I want to try is IMR 4007ssc.

Have heard others did well with 4320 but not sure if I want to try that one.

 

[ScreaminEagle]

SE

Nice shooting! The IMR 4320 load looks great. What speed are you getting?

JD338

I didn't shoot through the chrono today. I just focused on getting some tight groups. I did make up some new loads with IMR 4320 ranging from 35.5gr- 38gr in .5gr increments. Those I will chrono.

 

[ScreaminEagle]

Thanks DrMike! That QL program looks like it would be fun to play around with. I might have to consider getting it.