375 H&H Mag + Nosler Partition

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JoevR
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375 H&H Mag + Nosler Partition

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2004 Nosler Partition performance in .375 H & H Magnum

In 2003 I hunted with Dave Hayter, owner of Redkat Safaris on Florida Nature Reserve located in the district of Dewetsdorp, Free State Province. The nature reserve was teeming with game, but the herd of red hartebeest impressed me most. The herd consisted of approximately 120 animals, with a number of big, mature bulls. I booked a hunt for the next year with the intention of hunting a red hartebeest bull.

For many years, the Nosler Partition bullet set the standard against which the performance of other bullets was measured. The Partition bullet looks like a conventional jacketed soft point bullet. However, if the bullet is sectioned along its length, it can be seen that the lead is separated by the integral jacket into a front and rear lead core. The integral jacket or the partition prevents further expansion, keeping the rear lead core intact to ensure penetration to the vitals of an animal. I decided on the 260 gr. Partition bullet in .375 H & H Magnum for the hunt.

The aim of the handloading project was to achieve acceptable accuracy, 1 Minute of angle (1 MOA, or a 1 inch = 25, 4 mm group) in my book, and a flat trajectory for longer distance shooting. Components were Winchester cases, CCI 250 primers and S 335 Somchem propellant. The 260 gr. Partition bullet has a crimping groove, and at a Catrtridge Overall Length (COL) of 90,8 mm the case can be crimped into the groove. This I did with the Lee Factory Crimp Die.

I worked the load up from 64 gr. S 335 with 1 gr. increments to 70 gr. Muzzle velocity was measured with a Chrony. The 64 gr. load was good for 2500 fps, 67 gr. for 2600 fps and 70 gr. for 2700 fps. While the 70 gr. load yielded a 28.5 mm group, slightly over 1MOA, I decided that it was good enough for a heart / lung shot since I wanted the higher velocity for a flatter trajectory. With the scope zeroed at 100 meters, I established that bullet drop was 5 inches at 200 meters. Thus compensation for bullet drop out to 200 meters did not present too much of a problem. The 70 gr. group is shown below:

     Image

The hunt took place in July 2004. Dave pointed out a bull to me, and we followed this bull. The shot was taken at 160 meters as measured by Dave with his range finder. The bull was facing me, slightly quartering. After the shot the bull ran a short distance but did not get far. The bull?s horns measured a tad over 23 inches, indicating that it should make the Rowland Ward minimum of 23 inches after the green period expired. The measurement of the taxidermist was 23 1/8, and I received the Rowland Ward certificate in the post.

Note the slight bulge in the bull?s stomach in the photo below, just to the right of the hoof of the hind leg. This were the bullet was recovered, after passing through the chest and the stomach contents to stop under the skin.

     Image

The Rowland Ward certificate:

     Image

The next photo shows the recovered bullet, an unfired bullet and a loaded cartridge between the new Nosler box on the left and the old box Nosler box on the right, on top of Nosler Loading Manuals 3 and 5 :

      Image

The recovered bullet weighed 159 gr. That is 61 % of the original weight. This is less than the typical retained weight of copper bullets like the Barnes X, which in some instances can even be 100 %. My experience with the Nosler Bullet is that while the front lead core is lost during expansion, the partition stops further expansion and ensures sufficient penetration. If the shot is placed right, a one shot kill is the result.

The higher price of the Partition bullet, when compared to the cheaper price of a conventional jacketed soft point bullet, is well worth it in my opinion. The hunter knows that he is shooting a good quality bullet. Bullet break up, resulting in a wounded and possible lost animal is unlikely. I am prepared to pay a premium for this peace of mind when hunting.  
Last edited by JoevR on Fri Oct 21, 2011 5:34 am, edited 1 time in total.
6,5 x 58, 7 x 57 (x5), 8 x 57JS, 8 x 60J, 8 x 60JS, 8 x 68S, 9 x 57, 10,75 x 68, 25-06, 30-06, 7mm Rem Mag, 375 H&H Mag, 12 Gauge (x2), 22 LR (x5) 6,35 (x7) .38 Spec., .380, 9 mm P, .44 Mag
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SV MAD (Henk)
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Re: 375 H&H Mag + Nosler Partition

Post by SV MAD (Henk) »

Thanks for this nice write-up, it is appreciated
ek soek nog wapens...
Stefan764
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Re: 375 H&H Mag + Nosler Partition

Post by Stefan764 »

Hallo Joe

Baie nice toets en baie mooi weergegee!!

Net n vinnige klip in die bos en asb moenie dink ek wil stirr nie, maar die prys op die 260gn Nosler Partition (R500 per 50) en die 270gn Barnes TSX (R530) is soooo naby mekaar, hoekom die kans vat en moontlik (ons het dit tog nou uit jou toets waargeneem) net 60% van n koeel se gewig behou?

My opinie (persoonlike opinie) is dat ek nie weer n koeel sal koop wat nie bo 95% van sy gewig behou nie. Hoekom nie? Want daar is sulke koele beskikbaar op die mark teen heel bekostigbare pryse. Barnes is die een wat ek heeltyd uitsonder, maar as jy sy prys en performance in ag neem is dit volgens my die heel beste koeel wat tans gebou word vir jag-doeleindes.

Manne, asb, net weer om duidelik te wees, ek skiet geen produk af nie, ek kan net nie die logika insien om NIE die Barnes te koop nie. As die prys dubbel was, YES, dan was dit n ander saak, maar teen dieselfde prys kies ek die koeel wat homself al duisende kere bewys het.

Ek se duisende kere want ons kan dit staaf, hier le letterlik duisende koele by oom mauritz wat deur die jare uit alle diere van vlaktewild tot buffels en oolfante uitgehaal is, almal perfek omgeklink en almal bo 95% gewig behou.

Dankie nogmaals vir n goeie en objektiewe toetsverslag Joe, die Nosler het verseker sy werk goed gedoen en daarteen kan niemand stry nie!

Vriendelike groete
Stef
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Wouter Roets
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Re: 375 H&H Mag + Nosler Partition

Post by Wouter Roets »

Sullie

Ek kon dit nie beter gestel het nie! ;)

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JoevR
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Re: 375 H&H Mag + Nosler Partition

Post by JoevR »

Stefan, ek dink glad nie jy "stirr" nie, inteendeel ! :) Ek wens meer jagters wil hul ervaring met "bullet performance" deel, ons almal kan weer iets daaruit leer en dan ons eie keuses maak. Vanuit 'n statistiese oogpunt is een gebeurtenis nie van veel waarde nie. As ons 'n duisend of meer Nosler Partitions, Barnes X'e ens. se "retained weight" kon weeg, kon ons 'n gemiddeld bepaal. Dit sou meer gewig dra, statisties gesproke.

Persoonlik hou ek van die Nosler Partition (NP), bloot net omdat die produk al sedert 1948 op die mark is. Dit is net lekker vir my om met bv. my 8 x 57 JS Model 21 (Lepelslot) Brno, gemaak in 1950, en die Nosler Partition 200 gr koeel te jag. Die 2 is vir my stalmaats uit dieselfde era.

Nou lees ek in die 2011 Nosler Katalogus dat die "Optimum Performance Velocity" van NP's die volgende is, op bladsy 5:

"Minimum: 1800 fps
Maximum: Unlimited"

Met die "Unlimited" kan ek nie saamstem nie. Ek sou die maksimum trompsnelheid vir jagdoeleindes eerder op so 2750 vt/sek beraam. Dit is my opinie.

Barnes X sal my eerste keuse wees vir die volgende gevalle:

1. Ligte koeel teen hoe spoed, bv. die 100gr in my 25-06 vir jag. Koeel gekies: Barnes TTSX 100gr.
2. Koeel vir gevaarlike wild, bv vir buffel met 375 H&H Mag. Koeel gekies: Barnes TSX 300gr (1 ste skoot) en Barnes 300 gr solid (opvolg skote).

Vir gewone wild, met trompsnelhede van so 2400 vt/sek tot 2750 vt/sek, dink ek nie ek vat 'n kans deur die NP te gebruik nie. As ek raak skiet daar waar dit saak maak, sal die bok dood wees. Ek geniet dit ook om verskillende koeels te laai, en om met verskillende koeels te jag. As ek die res van my jagdae net Barnes X'e moet skiet, sal dit maar vervelig en voorspelbaar wees. Barnes maak ook nie 'n koeel vir my 9 x 57 (.356) nie. Gelukkig maak Claw 'n ronde neus 250 gr koeel in .356 kaliber.

Die enigste geval van "bullet failure" wat ek beleef het, was met 'n 130 gr PMP wat ek teen 2900 vt/sek trompsnelheid uit my 7 x 57 geskiet het. So ver ek weet, maak PMP nie meer hierdie koeel nie.

Groete
Joe
Last edited by JoevR on Wed Oct 26, 2011 10:01 pm, edited 1 time in total.
6,5 x 58, 7 x 57 (x5), 8 x 57JS, 8 x 60J, 8 x 60JS, 8 x 68S, 9 x 57, 10,75 x 68, 25-06, 30-06, 7mm Rem Mag, 375 H&H Mag, 12 Gauge (x2), 22 LR (x5) 6,35 (x7) .38 Spec., .380, 9 mm P, .44 Mag
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Sam Kelbrick
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Re: 375 H&H Mag + Nosler Partition

Post by Sam Kelbrick »

Miskien is dit tyd vir 'n behoorlike "Nosler Sale"?
Value has a value only if its value is valued
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