I'm still pretty new with this reloading deal, but with extensive lurking here and a bit of hands on, I feel I've been making some progress.

Since last summer, I've been running a pretty good load out of my A-Bolt synthetic stalker with BOSS. Fireformed FC brass, necksized, 180 gr. TSX's over 77 grains of H4831, lit off by WLR primers.
I tweeked the BOSS and seating depth with this load to get 3/4" pretty consistant, clocked at 3140fps. I've killed a couple of pigs with it pretty effortlessly, but it felt a bit toasty (stiff bolt) so I decided to back it down 1-1/2 grain, and change to RP brass..

Today at the range it turned out pretty good. The loads with full sized virgin RP brass clocked the same as the previous toasty load with 1/2 grain less powder, with no sticky bolt, and basically the same groups.

But here's where it gets interesting. I picked up some H-1000 and 200 grain TSX's to mess around with for no particular reason except to see how they would shoot together.

The virgin RP brass and loads starting at 78 grains of powder, .05 off the lands, no change of the BOSS shot like a house on fire right off the bat. 79 grains gave me .44" (3 shots) at 2900fps. Last load of 80 1/2 grains gave me .68" at 2975fps.

It just snagged my interest a bit...I've been chipping at that load with the 180 grainers for quite a while to get it where it is, and just mebbe fell into a better load pretty unintentionally in just one day..

Meanwhile, I don't know what the heck I'm gonna need to shoot with 200 grain TSX's out of a win mag. (shrug)

If they are that accurate and you have confidence shooting them then shoot anything you want with them!
I have a 30/06 that groups 180 grain SPBT's better than any other weight so I just shoot everything with that load Deer, Elk, Antelope, Bighorn Sheep, Mtn Goat, Coyotes and Marmots. Not one customer has ever complained that it was too heavy of a bullet for the job!

Interesting. My 300 Win Mag will arrive this week and I've planned to use H-1000, too. It's designed for such overbore rounds as the 300 WM, and as it's from Hodgdon's "Extreme" line, it is more temperature-stable than some other powders.

I'd say you're using your BOSS well to locate the nodes for your loads and therefore tailor your accuracy for any given bullet/powder combo. Those of us without BOSS try to accomplish the same thing by varying the powder and jump to lands.

Jaywalker

There is a 300 win mag in my future,
And 1 in my past, i had a tang safty ruger years ago and it shot well with IMR-7828. I have 2 pals that shoot 300s 1 is a newer ruger stainless and the other is a BAR. Both like RL-22 real well and belive it or not the 180 grain balistic tip has been dynomite on elk.

quote:

Originally posted by Jaywalker:
Interesting. My 300 Win Mag will arrive this week and I've planned to use H-1000, too. It's designed for such overbore rounds as the 300 WM, and as it's from Hodgdon's "Extreme" line, it is more temperature-stable than some other powders.

I'd say you're using your BOSS well to locate the nodes for your loads and therefore tailor your accuracy for any given bullet/powder combo. Those of us without BOSS try to accomplish the same thing by varying the powder and jump to lands.

Jaywalker

Jaywalker...

Being a Virginia kid originally.. from down in your corner of the state, I have noticed you and I think a lot alike based on your posts.. must run in the blood or something in the water....

As you are looking at H 1000 in the 300 Mag.. I'd thought I'd pass on my experience with that powder that has given good results for me.....

Not being a magnum guy, I normally only load up a magnum to be hot... for the few times I use it...

I worked up a load of 83 grains of H 1000 ( yup, like 5 grains over max, but it being a slow powder and supposedly 300 Mag load data is conservative, I worked it up and had no probs and great results!).... anyway, 83 grains of H 1000 and a 220 grain Round Nose or a 220 grain Nosler Partition... MV is 2950 to 2975 fps ( couldn't break 3000 but so what, close enough for government work)......

Zeroed 3.5 inches high at 100 yds, it still smacks gongs out at our local range at 300 yds, with no hold over... get that heavy bullet moving, it is actually flatter shooting than many would give it credit for....

When that 220 grain bullet smacks a gong at 300 yds on our range... it always has people stop and look around trying to figure out who shot something that made the gong "clang" so loud....

Alot of guys ask me if I am shooting something like a 375 or 416 or something.....

As far as penetration tests.... the one time I did it, the 220 grain Round Nose Sierra went thru 8 milk jugs of water at 100 yds.....and I still didn't recover the bullet....That surprised the pants off of me! but hey, it works so why question it????

I figure it you are going to have to use a hammer for a big job, might as well make it a big hammer!

H 1000 and a 220 grain bullet.. will wring out about the max you will get out of a 300 Win Mag....Minus the recoil, I think you will like the results should ya try it!

cheers
seafire

I think you're going to love that new 240 Woodleigh, Seafire.

quote:

Originally posted by Jon A:
I think you're going to love that new 240 Woodleigh, Seafire.

thanks Jon A.. I will have to take a look for them and see if they are being carried at midway yet...