Starting load for unlisted cal.

I am wanting to work up a loads for a 35/348 using a 225gr. and 250gr. bullets, but since there isn't any data available would I be safe working up to max loads for a .348 Win. with the same weight bullets. I have loaded for some time, but I have never loaded anything that wasn't a "book" load. Thanks, Tiler

That approach should work, within a certain limit that I'd prefer to avoid. The optimum powders for the .348 case and .348 bullets may not be optimum for the .348 case and larger bores. To start from scratch, I've long used the old "Powley Computer for Handloaders," which in recent years I've retired in favor of (first) Wayne Blackwell's "Load from a Disk" and (more recently) Hartmut Broemel's "QuickLOAD" software. Wayne's software is helpful. Hartmut's is awesome.

Dr. Howell,
 Thank you very much for the reply. Would you be so kind as to run your QuickLoad Program and see what you come up with? The load will be used in a Siamese Mauser with a 26" barrel, also could you recommend a source for the QuickLoad software.....after reading your post I looked and the program is not availiable from any of the sources I normally use. Thanks, Tiler

Tiler
 I'm not Ken, but it's 5:30 am, I'm up and gotta do something [Linked Image]

Quickload can be had from Neco
 Nostalgia Enterprizes Company
 Order line 1-800-451-3550
 check their products out at www.neconos.com

Canon,
 Thanks, I checked out their web site and downloaded the Demo Version. At a quick glance it looks like the Demo is limited to .30, but I think it is enough for me to see if I can figure out how to use it. Tiler

Tiler
 
 After checking my Quickload program, the 35/348 Win is listed in their data. If it wasn't you could still enter case measurements, water cap. etc, and work out a load for it.
 
 I got zippola experience with the 348 case so will have to pass on sharing any recommendations, other than to phone Ed at Neco in the morning [Linked Image]

Tiler:
 
 I think you will find that you "get what you pay for". The Load From A Disk" costs about 1/3 of the Quick Load which may be up in the $179 range.
 
 Assuming a 35/348 uses a .358" bullet:
 
 Using a .358" - 225 grain Sierra bullet; IMR 4895 or H4895 or AA2495 or N135 powder, the remaining case capacity in water grains is 60.9.
 
 75% load density
 45.7 grains
 2067 fps muzzle velocity
 32,201 CUP
 40,282 psi
 
 80% load density
 48.7 grains
 2203 fps
 36,567 CUP
 40,282 psi
 
 86% load density optimum and recommended maximum
 52.4 grains
 2370 fps
 42,333 CUP
 48,740 psi
 
 250 grain Speer bullet
 
 86% load density
 52.4 grains
 2258 fps
 42,367 CUP
 48,792 psi

Thanks Bill,
 I printed the load data and put it in my notebook. The 35/348 does use a .358 bullet. Also thanks to Canon. Tiler

Tiler
 I didn't want to recommend any loads for the reason stated, and not familiar with your rifles condition,but
 
 The maximum pressure listed for this cartridge is 46412 psi.
 
 Some of the loads listed exceed this pressure limit, even though Bill mentioned they were recommended maximum.
 
 I would recommend going to slower powders ie. AA XMR4350, H4350, IMR4350, Rel-19 etc. Using the slower group, the case should be near full capacities, yielding higher velocities, below maximum pressures .According to Quickload , the XMR4350 has the best propellant burnt %, and highest ballistic efficiency. I have tried loads on this basis though and ended up settling on another powder for reasons of accuracy.
 Ultimately you have to decide on the make of bullet you will be trying, as this makes a big difference to load pressures. You should also determine the cartridge overall lenght with this bullet and distance from lands before anyone could hazard a guess for a starting load.
 
 The Hornady and Barnes manuals do use the 4350's with the 348.
 
 Bill
 What does Load from a Disk come up with for these other powders ?
 
 Sorry for hoggin up your space Mr. Howell [Linked Image]

Canon:
 
 Load From A Disk groups powders into classes. In the case of the 35/348 Winchester they display class 9 and 9A. I gave only class 9 for the sake of expediency. Class 9A recommends:
 
 IMR 4046, H380, AA2520, N140 and VARGET. These two classes are the only recommendations available. The software does not provide for the user to enter powder preferences. The creators pre-programmed these selections which are un-editable.
 
 The optimum load recommendation is:
 
 Load density - 88.58%
 Powder charge - 53.9 grains
 Mussle velocity - 2403 fps
 CUP - 43,605
 PSI - 50,723
 
 Bill Tibbe

Bill
 I only had the demo version of Load from a disk, and that was a good while ago. These powders you mention would no doubt work , and come to think of it, Tilers rifle is a Mauser.As long as the case is up to it , the rifles action would be. The 348 and 35/348 list the max pressures of 46412. The 348 Ackley gives a max of 45991. No doubt these pressures were intended for the Model 71 Winchester lever action.
 
 Quickload shows lower pressure and higher velocity with the 4350 , and W760 , and Rel-19 powders. If this were my rifle , I would probably start a couple grains under book max for the 348, and slowly work up a few grains past, if there were no visible pressure signs. With the 26" barrel, this rifle should easily obtain 2600fps utilizing a 225 grain Nosler partion, and be a good stretch under the max pressure. Compressed maximum loads of 2700 fps, with this bullet and AA XMR 4350, or 2550 with the Nosler 250 grain. An excellent big game cartridge.

Bill and Canon,
 Thanks a bunch guys, you've given me some good guide-lines to work with. I have four of the powders you listed so I'll start with them. The Siamese is supposed to be a very strong action, but I don't want to test it to see! I'm hoping to get lucky enough to get an elk tag this fall.......there's only ten tags, so its kinda like the lottery, but who knows! A .358 225 gr. bullet should do a great job. Thanks again, Tiler