Using the 9x41 and 297gr gas checked bullets, 16" barrel cases full of 4 different powders evaluated

35 gr. 8208

35.4 gr. 2200

31gr. 680 ( not quite full)

35.3 rg. 2230-C[/LIST]

No load indicated high pressure

Velocities

8208************** 2035fps.

2200*************** 2073fps.

680**************** 1993fps.

2230-C************* 1866fps[/LIST]

It was found that the same load of 8208 and a 250gr. gas checked bullet traveled 2070fps.

The 680 shows a little more promise. We shall see. roger

Old age is a high price to pay for maturity!!! Some never pay and some pay and never reap the reward. Wisdom comes with age! Sometimes age comes alone..

I'm wondering if Reloader 7 might not be a candidate?

Considering your short barrel, that is very respectable performance!

quote:

Originally posted by Paul H:
I'm wondering if Reloader 7 might not be a candidate?

Considering your short barrel, that is very respectable performance!

I'll see if I can pick some up this week roger

I hope it's not too slow for the application, but my gut instict is that it is about the correct burning rate. When I had my 357 Herret, RL7 was too slow for the 200 gr bullets, but I'm thinking with your larger capacity, and heavier bullets, RL7 might work.

quote:

Originally posted by Paul H:
I hope it's not too slow for the application, but my gut instict is that it is about the correct burning rate. When I had my 357 Herret, RL7 was too slow for the 200 gr bullets, but I'm thinking with your larger capacity, and heavier bullets, RL7 might work.

At this point I'm not sure whether the Herret or the 9x57 has the greater capacity. I do notice that with the 180 to 200 gr jacketed bullets fly from each at the same velocities but the Herret uses more powder???????????

I think I'll get the RL7 and acc2015.If I can get enough of either into the case it may show some improvement but not much I suspect.

If I'm to hit that magic 2400fps I'll have to increase the capacity a little or get 8" more barrel.The other possibility is the 680. I can easily get 5 more grains of it into the case without compression, and will try to safely approach that. The question in my mind is will the 680 have more useable energy release than the 2200. So far there have been no real over pressure signs.

The next cast project is going to be the .375X41. I should be receiving some heavy bullets this coming week. That's a 16" barrel on a mod 600 with no recoil pad or compensator. Maybe I'll covince some young Turk that it is a very Macho thing to sit at the bench and take control of that rifle. If not it's going to kick the shit out of me. roger

Roger,

If your goal is 300 gr @ 2400 fps, me thinks you need at least a 358 win and a 20" or longer barrel.

quote:

Originally posted by Paul H:
Roger,

If your goal is 300 gr @ 2400 fps, me thinks you need at least a 358 win and a 20" or longer barrel.

I'm sure a long throated .358 would do it and than some.

Just for the sake of talking; The .358 case with the shoulder pushed back to give you a .500" long neck and a shoulder angle 26 to 33 degrees.Calculations show we need about 8 more grains of powder to go with that longer barrel.

Would the 300gr.gas checked bullet at 2400 fps have any practicle hunting use more than that bullet at 2100fps? Honest question as I have no experience with lead bullet performance on game. roger

I'm somewhat doubtful that RL-7 will best the load with AA 2200. In my comparisons - the two powders are near identical in burn rate with the AA 2200 being ever so slightly slower if at all. But - AA 2200 is a ball powder whereas RL-7 is a short stick powder. Might be tough to squeeze in enough of the RL-7 to gain any advantage. I suspect it'll be the same for the AA 2015.

W680/AA 1680 (as you're now using - and a very fine grained ball powder), the 4198's and AA 5744 are each a bit faster and may be of interest to explore...

Best regards-

Sky C.

Roger,

I'll likely never be able to take enough game with cast bullets to answer the 2400 fps question, but I'd venture to say that no, you'd gain no benefit on game jacking up the loads to 2100. Also you can get away with a softer alloy that will expand when launched at 2100, but at 2400, you'll need a much harder alloy to keep from leading.

quote:

Originally posted by Sky C.:
W680/AA 1680 (as you're now using - and a very fine grained ball powder), the 4198's and AA 5744 are each a bit faster and may be of interest to explore....

This thing kind of grew from a compressed load of 4198.Now I'm kinda scouting the area. Might not be able to get enough RL 7 in the case but acc2015 is fster burning than 2200 so it may give better results. I think , however that any gain at this point from optimum powder selection will be minimal, but I will try it. Thanks for your contribution. roger

Ran a calculation this morning and found that an increase of barrel length to 24" will yield a velocity at or over 2300fps. Not sure what I'd prove buy spending the money for a re-chamber or a new barreled action.I'll finish with the acc2015. roger