7 replies [Last post]
groovy mike's picture
Offline
Grand Slam Challenge Winner!
Joined: 03/19/2009
Posts: 2510
Anybody have load software?

In have an accurate low recoil load for 308 that I wonder how fast it is going.  I know it is slow but I don't have a chronograph.  It's 43.5 grains of IMR4350 behind a 150 grain bullet. 

Does anyone have the software to calculate what the muzzle velocity should be for that load?

Thanks in advance,

Mike

Critter's picture
Offline
Grand Slam Challenge Winner!Moderator
Location: Western Colorado
Joined: 03/26/2009
Posts: 4063
It is interesting in that

It is interesting in that when you go to the IMR powder site that it doesn't even give a load for IMR 4350.  But from some other load data I would expect that you load isn't even pushing 2000fps.  That may be why is is so accurate.  The nearest that I could come up with was 48 grains of IMR 4350 at 2539fps in an old Speer loading. 

I don't believe that you can find out the fps by just the powder and bullet.  There are way too many variables.

Don Fischer's picture
Online
Moderator
Location: Antelope, Ore
Joined: 03/24/2005
Posts: 3187
Try this

groovy mike wrote:

In have an accurate low recoil load for 308 that I wonder how fast it is going.  I know it is slow but I don't have a chronograph.  It's 43.5 grains of IMR4350 behind a 150 grain bullet. 

Does anyone have the software to calculate what the muzzle velocity should be for that load?

Thanks in advance,

Mike

 

Might get you in the back door. richard Lee say's that 43.0grs of H4350 and a 150gr cast bullet will get 2320fps. Same load but 44.0 grs will get 2360fps. If we assume those are reasonably close maybe we can work this out. Tell me the bullet your using so I can assign it a BC. Then I'll use that BC with a velocity between the two above and run it thru my cronograph computer. Tell me how you want it sighted in too. Then you take the data and fire against it to say 200yds in 50yd increments. Compare that to what my readout would say and you should get a pretty close figure. If by chance it's right on, stranger things have happened, you'll know what you have. Wish I had a way to do it backward. Here's a thought. My son has my old 308 in Bend. I could go over in a couple weeks and get it and cronograph that load you have. Send me ten bullets, I don't have any 150's in 30 cal. My old rifle has a 20" barrel.

groovy mike's picture
Offline
Grand Slam Challenge Winner!
Joined: 03/19/2009
Posts: 2510
no worries

Thanks for trying to help guys, it is way more work than I thought it would be.  I'll just wait until my buddy brings his chrony to the range and then test it.  I appreciate the offers though!

ndemiter's picture
Offline
Grand Slam Challenge Winner!
Location: lawrence, KS
Joined: 05/17/2007
Posts: 647
http://www.loaddata.com/membe

http://www.loaddata.com/members/search_detail.cfm?metallicid=4061&MW=150&PM=IMR&PT=4350&caliber=.30&caliberid=12&header=.30 Caliber Reloading Data

this is the spper info that critter was talking about it. i don't have ANY thing in any of my loading manuals about 4350. only 4320. which i thought was interesting.

it's a pretty slow going load, but i bet recoil isn't too bad.

groovy mike's picture
Offline
Grand Slam Challenge Winner!
Joined: 03/19/2009
Posts: 2510
thanks

ndemiter:

That looks like it would be exactly what I was looking for, but I can’t access it. When I click the load data link I get the page asking if I’d like to subscribe to membership :(

It is a low velocity, low recoil, but accurate plinker load.  I figure its safe in any 308 or 7.62x51 rifle chamber.  And yes it does kill deer.  But I still haven't run it through a chronograph!

JackHamr''s picture
Offline
Joined: 10/15/2007
Posts: 54
The Lee load data to me is

The Lee load data to me is suspect ..

45th Lyman (1970) gives starting load of 4350 with 150 grain bullet in 26" barrel as

46.0 grains at 2380 fps and 33500 C.U.P.

 

7mm Magnum's picture
Offline
Location: Custer, Michigan
Joined: 03/16/2008
Posts: 89
Yes I have a reloading

Yes I have a reloading software program,.. be more than happy to help you out but I require a little more info to make it worth your while,.... the list of inputs I'll need are :

powder charge weight in grams, Powder manufacture, projectile make and grain weight, case trim length, case overall length, barrel length of the firearm.

I use the program to run different powders, weight charges, and projectile combinations through prior to actually building any,.. this way I can toss the ideas that do not project good results saving wasted time , money, and supplies. I chrony my loads to compare to the software and have to say the program is close to the actual figures on the chrony,... VERY close! Can't even begin to explain how many times the software has paid for itself in that aspect alone,..

Related Forum Threads You Might Like

ThreadThread StarterRepliesLast Updated
Deer Hunting SoftwareHuntingSouth007/21/2006 16:00 pm
Favorite 45-70 load?groovy mike901/25/2011 06:55 am
Hot loads! For slug shooters!trappermike107/30/2007 12:51 pm
advice on .308 loadTaku1002/04/2012 13:38 pm
Load bookscsumerall402/02/2008 22:38 pm