160 partitions in 280 rem - 24hourcampfire

Gents - finally getting ready to tinker with this... have 760 and H4350 on hand... any tried and true loads or sage advice?

Never used 160's and 4350 but Ive shot my share of 160's with RL 22 and IMR 7828 outta my 280

Used 160 Partitions and IMR4350 in my .280 with great success on elk for many years. I would surmise that H4350 would perform the same.
Good accuracy and lethal. The elk didn't know what hit 'em.

WB

Originally Posted by Highoctane

Never used 160's and 4350 but Ive shot my share of 160's with RL 22 and IMR 7828 outta my 280

Ditto. And add Norma MRP, & the 7828, being the SSC version.

Either 4350 may be OK, but IMHO, they are both faster than optimum with that bullet weight & you will leave some velocity on the table.

Newer RL-26 is likely a better choice today but I haven't used it in that combination.

MM

In my 284 Win (similar case size to 280) I found the 160 NP to be a real elk thumper.

I used 4350 a lot but turned to RL17 and have never looked back.

The 160 NP is a bit much for deer, but perfect for elk.

My 2 cents.

The plan is to develop the load as an elk and bigger round. (I use a 6.5cm with 129 interbonds for deer or a 30-30 depending on the situation.)

Originally Posted by MontanaMan

Originally Posted by Highoctane

Never used 160's and 4350 but Ive shot my share of 160's with RL 22 and IMR 7828 outta my 280

Ditto. And add Norma MRP, & the 7282, being the SSC version.

Either 4350 may be OK, but IMHO, they are both faster than optimum with that bullet weight & you will leave some velocity on the table.

Newer RL-26 is likely a better choice today but I haven't used it in that combination.

MM

Yep, RL26 in mine with the 160 Trophy Bonded Tip averages over 2900 fps and great accuracy.

Originally Posted by MontanaMan

Originally Posted by Highoctane

Never used 160's and 4350 but Ive shot my share of 160's with RL 22 and IMR 7828 outta my 280

Ditto. And add Norma MRP, & the 7282, being the SSC version.

Either 4350 may be OK, but IMHO, they are both faster than optimum with that bullet weight & you will leave some velocity on the table.

Newer RL-26 is likely a better choice today but I haven't used it in that combination.

MM

According to "Guns & Ammo" Dec. 2013, MRP and RL22 are the same powder, subject only to lot-to-lot differences.

I got great velocity with IMR7828SSC and the 160 gr. Speer Grand Slam. Accuracy, at least in my rifle wasn't so good. Tried the long discontinued WMR and got equal speed to the 7828 and .75" average groups. Probably could do just as well with the 7828 if I wanted to take the time playing with seating depth and the like. I see o reason why it wouldn't work just as well with the 160 gr. Noslers.
Paul B.

Originally Posted by mrchongo

According to "Guns & Ammo" Dec. 2013, MRP and RL22 are the same powder, subject only to lot-to-lot differences.

So they say..............looks a little different to me, though.

But I've used the same charges of both for 20 years.

MM

Originally Posted by M1Garand

Originally Posted by MontanaMan

Originally Posted by Highoctane

Never used 160's and 4350 but Ive shot my share of 160's with RL 22 and IMR 7828 outta my 280

Ditto. And add Norma MRP, & the 7282, being the SSC version.

Either 4350 may be OK, but IMHO, they are both faster than optimum with that bullet weight & you will leave some velocity on the table.

Newer RL-26 is likely a better choice today but I haven't used it in that combination.

MM

Yep, RL26 in mine with the 160 Trophy Bonded Tip averages over 2900 fps and great accuracy.

My M77 MarkII with 22 inch barrel getting 2975fps avg with 160gr SGK and RL26.

Originally Posted by TATELAW

My M77 MarkII with 22 inch barrel getting 2975fps avg with 160gr SGK and RL26.

Sounds about right, what's your load?

Originally Posted by TATELAW

My M77 MarkII with 22 inch barrel getting 2975fps avg with 160gr SGK and RL26.

That is genuinely impressive..............if the pressure is not too high.

JB, whattaya think?????????????????

Or does anyone know what QL says about that load? Alliant does not list a 280 load with RL-26.

MM

Tatelaw, Sounds almost too good to be true. Without knowing for sure, my guess is your pressures may be in the red zone.

Originally Posted by MontanaMan

Originally Posted by TATELAW

My M77 MarkII with 22 inch barrel getting 2975fps avg with 160gr SGK and RL26.

That is genuinely impressive..............if the pressure is not too high.

JB, whattaya think?????????????????

Or does anyone know what QL says about that load? Alliant does not list a 280 load with RL-26.

MM

MontanaMan, I wish Alliant did...I emailed them maybe three years ago about 280 data and was told they haven't tested for it. I worked up to 61.5 with the 160 Trophy Bonded Tip and then backed down to 60.0, that gave me a five shot average of 2980 fps. I plugged it into QL and it predicted 2978 fps at 64K.

Originally Posted by MontanaMan

Originally Posted by TATELAW

My M77 MarkII with 22 inch barrel getting 2975fps avg with 160gr SGK and RL26.

That is genuinely impressive..............if the pressure is not too high.

JB, whattaya think?????????????????

Or does anyone know what QL says about that load? Alliant does not list a 280 load with RL-26.

MM

Quick Load says RL-26 is magic pixie dust and he's within the pressure standards for a .270 Winchester or should be fine in a modern bolt action rifle:

Code

Cartridge          : .280 Rem.
Bullet             : .284, 160, Nosler AccuBond 54932
Useable Case Capaci: 58.204 grain H2O = 3.779 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Alliant Reloder-26 *C

Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.833% 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

-08.3   95    55.00   2656    2507   43923  12549     98.7    1.289
-07.5   96    55.50   2684    2559   45300  12639     99.0    1.270
-06.7   97    56.00   2712    2612   46745  12723     99.2    1.251
-05.8   98    56.50   2739    2666   48232  12801     99.4    1.233
-05.0   99    57.00   2767    2720   49775  12872     99.6    1.215
-04.2  100    57.50   2794    2774   51375  12937     99.7    1.197  ! Near Maximum !
-03.3  101    58.00   2822    2829   53035  12996     99.8    1.179  ! Near Maximum !
-02.5  101    58.50   2849    2884   54758  13047     99.9    1.162  ! Near Maximum !
-01.7  102    59.00   2876    2939   56545  13092    100.0    1.145  ! Near Maximum !
-00.8  103    59.50   2904    2995   58401  13129    100.0    1.129  !DANGEROUS LOAD-DO NOT USE!
+00.0  104    60.00   2931    3051   60328  13162    100.0    1.112  !DANGEROUS LOAD-DO NOT USE!
+00.8  105    60.50   2958    3108   62332  13194    100.0    1.096  !DANGEROUS LOAD-DO NOT USE!
+01.7  106    61.00   2985    3165   64415  13225    100.0    1.080  !DANGEROUS LOAD-DO NOT USE!
+02.5  107    61.50   3011    3222   66580  13255    100.0    1.064  !DANGEROUS LOAD-DO NOT USE!
+03.3  107    62.00   3038    3280   68831  13284    100.0    1.048  !DANGEROUS LOAD-DO NOT USE!
+04.2  108    62.50   3065    3337   71175  13311    100.0    1.033  !DANGEROUS LOAD-DO NOT USE!

Shot a caribou cow yesterday with 280 AI 160 gr Nosler AB RL 26 cold temps!

280 uses the .30-06 case, right? What about looking at .30-06 powders for 165 grain bullets?

If valid, maybe Big Game?

P

I was just looking back through some of my old posts and noticed I never replied on here to the question about my load. I'm using 60.5 grains so it lines up pretty well with the Quickload prediction shown above.

Tag

Berger has published data for 280 Rem and RL26 with a 150 at 2997 they never give brass or primers so it's probably on the safe side. Based on that I would say 2900 with a 160 should be a serious hammer for elk. I stopped harvesting deer with my 270 win and 150 NPT way to much bullet.

Good luck and shoot straight y'all

Originally Posted by scottishkat

Berger has published data for 280 Rem and RL26 with a 150 at 2997 they never give brass or primers so it's probably on the safe side. Based on that I would say 2900 with a 160 should be a serious hammer for elk. I stopped harvesting deer with my 270 win and 150 NPT way to much bullet.

Good luck and shoot straight y'all

Did the 150 NPT make em too dead? I hate it when that happens! I shot a few with that bullet and they seemed just the right amount dead to me.

Originally Posted by WMR

Originally Posted by scottishkat

Berger has published data for 280 Rem and RL26 with a 150 at 2997 they never give brass or primers so it's probably on the safe side. Based on that I would say 2900 with a 160 should be a serious hammer for elk. I stopped harvesting deer with my 270 win and 150 NPT way to much bullet.

Good luck and shoot straight y'all

Did the 150 NPT make em too dead? I hate it when that happens! I shot a few with that bullet and they seemed just the right amount dead to me.

Well said.
I reckon a .257 Roberts is about right, and a .375 H&H is fine too. Those'll both also make 'em just the right amount of dead. That's the fun of it, isn't it?
Cheers,
Rex

Originally Posted by MontanaMan

Originally Posted by mrchongo

According to "Guns & Ammo" Dec. 2013, MRP and RL22 are the same powder, subject only to lot-to-lot differences.

So they say..............looks a little different to me, though.

But I've used the same charges of both for 20 years.

MM

I have a big jug of MRP and like it.

After I've depleted my current supply of RL-22, I'll be using MRP and replacing RL-22 with RL-23.

Don't plan on buying any more RL-22.

DF