I tried for the first time loading the 220 Partition, using IMR 4831. I got velocities of @ 2650 and great groups at 50 yards (nearly all in one hole). Need to move to 100 yds to test as well. I could just leave well enough alone, but I'm curious what other powders/loads have worked out well in the H&H. While you're at it, I also need to tune up my 180 partition loads. Figure if I get these working, I've about done what I need to make the 300 work for anything I'll shoot with it, although the 200 Accubond sure looks appealing for long ranges at big critters. The 260 375 Accubonds sure worked well on plains game in Namibia. Thanks, Bob

that old 220 gr partition in a 300 h&h is what the first partition was made for. Old john nosler was hunting moose with his friend clarence purdie in canada. he shot a moose and the bullet failed, causing john to invent the partition

220-grain NP / 65 grains IMR 4831 or 68 grains H4831SC / 2700 fps.
180-grain TSX or Woodleigh / 70 grains H4831SC / 2800 fps.

CCI 250 or Fed 215's for primer, 3.600" OAL, WW or Hornady brass.

I've enjoyed excellent accuracy and velocities in my .300 H&H with 180 grain bullets (Accubonds ) using IMR 7828SSC. Being a somewhat slower powder, with your 220 grainers it should yield higher velocities at the same pressure compared to IMR 4831. There are no flies on your 4831 load, but if you want to experiment I'd certainly recommend 7828. If I felt the need for a heavier bullet, the 200 grain Accubond would certainly be my first choice.

quote:

Originally posted by Stonecreek:
I've enjoyed excellent accuracy and velocities in my .300 H&H with 180 grain bullets (Accubonds ) using IMR 7828SSC. Being a somewhat slower powder, with your 220 grainers it should yield higher velocities at the same pressure compared to IMR 4831. There are no flies on your 4831 load, but if you want to experiment I'd certainly recommend 7828. If I felt the need for a heavier bullet, the 200 grain Accubond would certainly be my first choice.

Sir,

I've not owned the 300 H & H before and felt I needed to rectify that. Here are a couple of loads that showed promise IMHO.





I am thinking of using the 200 gr. NAB as my go to with this gun. I've had good luck with the IMR 7828SSC in a couple other loads. Would you care to share your recipe for the 200 gr. NAB and the 7828/300 H&H?

Thanks,

GWB

PS: oh yeah, nice snag on the KoO 22 Hornet

GW: I haven't actually used IMR 7828 SSC with a 200 grainer in the .300 H&H; I have worked up some loads with it using 200's in my .300 Win.

My 180 grain load for the .300 H&H is 73.5 gr of IMR7828SSC, Fed 215, 180 Accubond in R-P brass for 2960 FPS (this is from a 24.4" Sako barrel.) This load appears to produce rather mild pressures and this gun would stand another grain or so if I so desired.

In fact, while working up the load I was at 72 grains and intended to move incrementally to 72.5 grains; however, Gremlins reset my scale and instead of upping the load by .5 grains I upped it inadvertantly by 5.0 grains to 77.0 grains. Unwittingly, I fired three of these rounds through the chronograph at a 100 yard target. There was no sticky bolt or other immediate indication of an overload, and the three-shot group went into the same .75" as other loads. Imagine my surprise when I read the chronograph and it was showing an average of 3077 fps for the three shots!

Out of caution, I tossed those three cases and pulled the bullets of the remaing two rounds with that overload. But it does illustrate that with 7828 you can boost .300 H&H velocities somewhat higher than I would have thought. But since 2960 FPS is all I really want with a 180, that's where I run it.

Of course, rifles vary and don't assume that your rifle will digest the same amount of powder as mine, but I'm obviously very happy with 7828 in this classic cartridge. Also, the SSC variety meters through a powder measure accurately enough not to bother with weighing charges.

SC,
Thanks for the info.

I'm not a hotrodder. It seems these days I'm channeling Rita Rudner and turning into "mild". If I wanted more velocity, I'd do a RUM. For what I do 2,800 fps MV is sufficient.

Best

GWB

Out of my pre 64 Mod70 my go to round is the Barnes 180gr TTSX with 70.5gr RL19 at 2995 fps giving me sub moa.

quote:

Originally posted by Geedubya:
SC,
Thanks for the info.

I'm not a hotrodder. It seems these days I'm channeling Rita Rudner and turning into "mild". If I wanted more velocity, I'd do a RUM. For what I do 2,800 fps MV is sufficient.

Best

GWB

Looks like you're running pretty close to your desired 2800 fps already with your H4831/200AB loads, which appear to be averaging about 2767 fps. If you wanted to boost that just a little to make an "honest" 2800 fps, I suspect that 7828 would easily do it for you. I also suspect that there are very few wapitis or kudus which are able to discriminate between the two loads on the receiving end .

Funny that this topic should come up. I was just shooting some 220 Partitions over 65 gr. of H4831sc in my Pre-64 300 H&H. I'm guessing velocity at 2,700 as I couldn't chrono them. This rifle seems to average 50 fps (2" longer bbl) over Nosler book values...which puts me right at 2,700 fps.

Regardless I shot four 3-shot groups that were around 1.25" at 200 yards each. Needless to say I was darn impressed with that near 60 year old rifle! Moreover, while I'm not particularly "recoil" sensitive I am discovering that I am "report" sensitive. The muzzle blast on this load was significantly less than others I've fired.

quote:

Originally posted by Stonecreek:
I also suspect that there are very few wapitis or kudus which are able to discriminate between the two loads on the receiving end .

Particularly not in Reagan Wells, Tx.



GWB

These loads (and posted results, thank you for the pictures) show why the 300 H&H should never die. The 220 grain Partition load is like the 286 Partition load in the 9.3x62:

It goes clean through most anything, letting warm blood out and cold air in. Furthermore, as the guide famously said, "you can eat right up to the hole, too."