Request for powder input

[Marlin Junky]

I've got a list of powders that I'd like to eventually try in the .350/.35W and was wondering if anyone out there has experience with the following and 250+ grain boolits in said rounds:

IMR 4064
XMR 4064
IMR 4320
Reloader 15
XMR 2495
IMR 4895
H4895
Bartlett's current batch of surplus 4895, even!
Varget
Benchmark

Input on anything including granule size is welcome and appreciated.

Thanks,
MJ

[runfiverun]

that reloader 15 is near 4895?
if so try about 32 gr of it in your 35 rem should be near 1900 and darn accurate.
you were getting too much vel.variations with the other powders you were using.

yes others were following your thread, we were too busy arguing on the tale of twists thread.
i was watching your tests somewhat align with others being done...

[klausg]

MJ-
I think we may have close to the same .350 Rem Mag; mine is a stainless/synthetic M77 MkII. I have not done much load development, I haven't really even got the barrel really broken in yet. That being said, mine seems to have a great affinity for RL-15. I'm shooting Hornady 250 gr. j-words, and from 55.0 to 57.0 of RL-15 were cloverleafing nicely. I didn't have my chrono with me so velocities would be a guess; primers were CCI 200's. It definitely got my attention and I think I'll be playing with that for awhile. Hope this helps.

-Klaus

[Marlin Junky]

Thanks for the replies, guys.

I'm starting to think about the 4350's but if they don't burn more completely than H380/SplBall, I'll have a cow! :???:

MJ

[Bass Ackward]

Thanks for the replies, guys.

I'm starting to think about the 4350's but if they don't burn more completely than H380/SplBall, I'll have a cow! :???:

MJ


Don,

4350s are too slow for the cartridge, especially when using lead up to 265 grains. At some point they would work, just that the weight is somewhere north of that.

I am kinda partial to one, but I won't bias you with that.

[Marlin Junky]

Bass,

I just found some IMR 3031 in my "powder magazine"... looks to be a recent purchase too. :-D I'm thinking 40 to 42 grains to start (with SAECO 352 at 249 grains bare) but can't find much in the way of data.

I'm also interested in the difference between IMR 4064 and XMR 4046 with respect to pressure curve. Grain size doesn't mean anything to me any more. If I can get the M77 .350 to shoot SAECO 352 accurately at over 2200 fps then I'll gladly weigh my darn charges.

I'm going to heat treat some 352's cast of 50/50 (more accurately, it's 48.4Pb/49.8WW/1.8Sn from 50/50 bar solder) to about 500F tonight so I should have 21+ BHN bullets when it comes to shooting them a week from this Thursday (which will probably be the last installment of Range results with the M77 .350 (http://castboolits.gunloads.com/showthread.php?t=28788) until later in June because I need to go to Sherdian for awhile). One thing I've noticed so far that I like about 50/50 is that it'll produce a color change at about 525F (don't know what the melt point is yet). I don't remember seeing color changes when testing higher tin content bullets for melt point.

MJ

[BABore]

You may find this off-the-wall, but have you thought about XMP 5744? I've had very good sucess with it at HV in both my 338 Win Mag and 375 H&H. AA has data for lower velocity stuff. Email their ballistician and explain all your particulars and what your trying to do. I contacted them on my 338 and got data that went above their book stuff by almost 10 grains. Seems most don't think about or want HV data for cast, so the print what they print. I use a CCI 350 primer with 5744.

From my testing I've found that 5744 has several accuracy plateaus over its min-max range. Groups repeat the vertical stringing, horizontal stringing, tightening, then opening senario as you go up. Definetly bedding/node related as accuracy points are a fairly consistent fps apart.

[Shuz]

I use AA4064 with a 280g Lyman 358009 in my 35 Whelen. 48g is what I worked up to and it gives good accuracy and chrono's 2150 fps. My twist rate is 1:12.

[Marlin Junky]

Shuz,

Please measure the bearing length on your 358009 and indicate the hardness need to take 'em to 2150 fps.

Can you tell me something about your barrel and please be more specific about your accuracy? For example, do you get consistent 1.5 MOA (5 round groups) accuracy with that charge of XMR 4064? How long does the accuracy last until your barrel needs scrubbing? Have you ever compared the results of XMR 4064 to IMR 4064? I'm starting to feel like a !@#$ lawyer here.

Thank you,
MJ

[Marlin Junky]

Bass,

Is the powder you mentioned between or equal to Re7 through Re15 in the burn rate charts?

:)

[Bass Ackward]

It's RL15. Best powder hands down for ACWW or jackets for me. As you go harder, then more get onto the playing field.

What I find interesting is BABore's use of 5744. Definitely violates the .... " take it easy on me " rule for cast. But accuracy is where you find it.

[Marlin Junky]

Has anyone ever tried Varget in the medium bores?

What caught my eye in Hodgdon's description of Varget is the claim of "easy ignition".

MJ

[runfiverun]

i am seriously thinking of varget in either 7x57 or 308 little easier push down the bbl
looking to keep the muzzle pressure down.

[Marlin Junky]

MJ-
I think we may have close to the same .350 Rem Mag; mine is a stainless/synthetic M77 MkII. I have not done much load development, I haven't really even got the barrel really broken in yet. That being said, mine seems to have a great affinity for RL-15. I'm shooting Hornady 250 gr. j-words, and from 55.0 to 57.0 of RL-15 were cloverleafing nicely. I didn't have my chrono with me so velocities would be a guess; primers were CCI 200's. It definitely got my attention and I think I'll be playing with that for awhile. Hope this helps.

-Klaus

Klaus,

I don't know if this guy is a nut or not but Re15 data from reputable sources is hard to come by. He has chronographed the Speer 250 which probably would develop more pressure than your Hornady.

http://35cal.com/loading.html#77

MJ

[MT Gianni]

I don't remember who but someone here has a great load for Varget and a Saeco 352 in the 356 Win. Try a search. Gianni