.264WM gets a turn at the range.......................

[280SOLIDBASE]

Give a look at RL25, Nosler cases, CCI250's and either the 140 BT or AB. I'm around 67 grains and I clock right around 3180 with the BT and 3200 with the AB. It is seriously good shooting. Pretty easy to keep it right at 1" at 200 yards or better if I'm shooting well. I'll look up my OAL when I get home.

SJB...Funny you should mention that load. It was the EXACT same load I tested this past Sunday. Just one of many. I am using Nosler cases, CCI 250 Primers and the 140 gr. Nosler BT. Out of my rifle (Winchester Model 70 Ultimate Shadow, 24" bbl), mine came in at an average velocity of 3161.6 fps with the high being 3165.8 and the low being 3154.5 fps. A very consistent load with the ES only being 11.3 fps. My group with that was 1 7/16" @ 100 yds. I have this load marked to be re-tested. I think I fired about 33 different test loads and have picked out 10 to be re-tested based on a combination of velocity and accuracy. If I could just drop the 1 from the 7/16", I'd have a winner! This load was one of the better ones using that criteria. I saw the pics of the targets that the original poster of this thread posted and thought I would give RL 33 a try...now to find some...lol. Thanks for your info!

 

[SJB358]

Give a look at RL25, Nosler cases, CCI250's and either the 140 BT or AB. I'm around 67 grains and I clock right around 3180 with the BT and 3200 with the AB. It is seriously good shooting. Pretty easy to keep it right at 1" at 200 yards or better if I'm shooting well. I'll look up my OAL when I get home.

SJB...Funny you should mention that load. It was the EXACT same load I tested this past Sunday. Just one of many. I am using Nosler cases, CCI 250 Primers and the 140 gr. Nosler BT. Out of my rifle (Winchester Model 70 Ultimate Shadow, 24" bbl), mine came in at an average velocity of 3161.6 fps with the high being 3165.8 and the low being 3154.5 fps. A very consistent load with the ES only being 11.3 fps. My group with that was 1 7/16" @ 100 yds. I have this load marked to be re-tested. I think I fired about 33 different test loads and have picked out 10 to be re-tested based on a combination of velocity and accuracy. If I could just drop the 1 from the 7/16", I'd have a winner! This load was one of the better ones using that criteria. I saw the pics of the targets that the original poster of this thread posted and thought I would give RL 33 a try...now to find some...lol. Thanks for your info!

Can you tweak the seating depth a little? I just went downstairs and took some measurements from my Model 70. I am 3.330 COAL to the rifling with the 140 BT/AB.

My COAL used in this rifle is 3.280". Not saying that it will or won't work with your rifle, but it might be worth a shot. Both bullets shoot exactly the same out of my rifle. POI is really the same for both loads as well, at least out to 300, haven't shot them both to 600 to know for sure. I don't change the die setting or nothing when loading either bullet.





Those two groups aren't a good example since I adjusted between groups in order to get them centered up at 250 yards, but that is a decent representation of what the rifle does with that load.

This was an instance of me not paying attention and shot the outer three first..

Then, I buckled down and shot the inner three. So sometimes its more me then the gun or the load.



Not sure how your cleaning or shooting the rifle either, but my rifle will take quite a few rounds before it needs to be really cleaned, but when I do clean it, I make sure I scrub the throat out really well too.

Good luck and keep us updated on your progress.

 

[280SOLIDBASE]

SJB, I just checked my data and my COAL is 3.199". I came up with that length using the Hornady OAL length gauge and Hornady bullet Comparator. I have the bullets seated at .025 off the lands (might be a tad much) as I have seen others at about .010-.015. Once I acquire my best performing load I was going to work on adjusting the bullet depth. I hate to adjust more than one thing at a time, as then I won't know what adjustment worked.

As for cleaning; I give the rifle a "range cleaning" about every 15-18 shots, which is an abbreviated version of the thorough cleaning it gets at home.

When I shoot the rifle I am shooting off of a Lead Sled which is very stable. I shoot 3 shot strings and cool the barrel with a wet rag from a cooler with ice and water in it while I change targets, print chrono data, record notes, etc. The barrel is very cool before firing the next string.

I am also using a Burris Fullfield E1 Scope 4.5 x 14 which gives me a great view of the target. I can tell however, that the last time I got this involved with testing a rifle and loads was several years ago and my eyes now aren't what they used to be!

 

[280SOLIDBASE]

.280 Remington (or anyone else). May I ask where you got the load data for the .264 using Reloader 33? I was on Alliant's sight and they do not have any published for the .264. I'd like to try some of it.

 

[SJB358]

SJB, I just checked my data and my COAL is 3.199". I came up with that length using the Hornady OAL length gauge and Hornady bullet Comparator. I have the bullets seated at .025 off the lands (might be a tad much) as I have seen others at about .010-.015. Once I acquire my best performing load I was going to work on adjusting the bullet depth. I hate to adjust more than one thing at a time, as then I won't know what adjustment worked.

As for cleaning; I give the rifle a "range cleaning" about every 15-18 shots, which is an abbreviated version of the thorough cleaning it gets at home.

When I shoot the rifle I am shooting off of a Lead Sled which is very stable. I shoot 3 shot strings and cool the barrel with a wet rag from a cooler with ice and water in it while I change targets, print chrono data, record notes, etc. The barrel is very cool before firing the next string.

I am also using a Burris Fullfield E1 Scope 4.5 x 14 which gives me a great view of the target. I can tell however, that the last time I got this involved with testing a rifle and loads was several years ago and my eyes now aren't what they used to be!

280, I would try backing the AB's up to .050 or even .075 the next time out. I know it sounds crazy, but I have had much more luck lately with the AB's shooting further from the rifling that closer.

I think your closer than you think. I would probably fiddle a little with the powder that gives you the speed you like, and settle in and work the seating. I am betting once you find the seating depth your rifle likes, many of the powders will work fine.

Here is some RL33 data for the 140 AB and a 24" barrel. Let me know if you need something different.

Cartridge : .264 Win. Mag.
Bullet : .264, 140, Nosler AccuBond 39457
Useable Case Capaci: 74.854 grain H2O = 4.860 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-33

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 81 61.20 2418 1818 29397 12874 85.0 1.705
-18.0 83 62.73 2490 1927 31613 13396 86.8 1.659
-16.0 85 64.26 2562 2041 34013 13906 88.6 1.614
-14.0 87 65.79 2635 2159 36616 14399 90.3 1.570
-12.0 89 67.32 2709 2282 39443 14873 91.9 1.514
-10.0 91 68.85 2784 2409 42515 15324 93.3 1.460
-08.0 93 70.38 2859 2541 45858 15748 94.6 1.408
-06.0 95 71.91 2934 2677 49500 16143 95.8 1.358
-04.0 97 73.44 3010 2817 53430 16505 96.9 1.310
-02.0 99 74.97 3086 2961 57675 16831 97.8 1.263 ! Near Maximum !
+00.0 101 76.50 3162 3108 62279 17117 98.6 1.219 ! Near Maximum !
+02.0 103 78.03 3238 3260 67273 17362 99.2 1.176 !DANGEROUS LOAD-DO NOT USE!
+04.0 105 79.56 3314 3414 72720 17561 99.6 1.134 !DANGEROUS LOAD-DO NOT USE!
+06.0 107 81.09 3390 3572 78648 17712 99.9 1.094 !DANGEROUS LOAD-DO NOT USE!
+08.0 109 82.62 3465 3733 85122 17814 100.0 1.055 !DANGEROUS LOAD-DO NOT USE!
+10.0 111 84.15 3541 3897 92208 17879 100.0 1.017 !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 101 76.50 3347 3483 77812 16655 100.0 1.107 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 101 76.50 2907 2626 47897 16367 91.2 1.366

 

[280SOLIDBASE]

Thank you very much for the info!

 

[FOTIS]

Mike:

Reshoot with your "new" trigger! lol

 

[280SOLIDBASE]

SJB...I just realized I had a mental lapse when I told you 24" barrel...it is actually 26".

 

[.280 Remington]

Mike:

Reshoot with your "new" trigger! lol

Aye Aye MSgt! Will do as soon as the wind stops blowing! Good grief!