Author Topic: Load data for 7mm Mag & 300 Win Mag w/ WMR powder (Read 1651 times)

Thomas Krupinski · « **on:** December 13, 2004, 04:38:09 AM »

Anyone have any load data for discontinued Winchester Magnum Rifle (WMR) powder?

Looking for some data for 7mm Mag and 300 Win Mag, and some others.

Thanks,

ricciardelli · « **Reply #1 on:** December 13, 2004, 07:00:22 AM »

http://stevespages.com/page8c.htm

Thomas Krupinski · « **Reply #2 on:** December 13, 2004, 08:35:22 AM »

Thanks Steve, that's a good general start.

My published paper references are a bit old and I tend to get my current information from the mfg websites, but Winchester is not putting theirs out.

Anyone have any of the current manuals that show WMR powder loads for 7mm Rem Mag and Win 300 Mag with pressure references?

Thanks,

skb2706 · « **Reply #3 on:** December 13, 2004, 11:27:40 AM »

Winchester does offer loading data on their Winchester - Olin website but like you said not for that powder.
http://www.winchester.com/products/catalog/components/reloadertoc.aspx

Anyway I know I have several of the old freebie loading manuals for them and will get you whatever they have. If I recall I do have the one that includes WMR.

Thomas Krupinski · « **Reply #4 on:** December 13, 2004, 01:26:55 PM »

Thanks, I would appreciate that. My printed references are all prior to the introduction of that powder.

jackfish · « **Reply #5 on:** December 13, 2004, 05:30:56 PM »

Winchester published data:

300 Winchester Magnum
Bullet (grs.) Powder Charge (grs.) Velocity (fps) Pressure (psi)
165 WMR 76.0 3010 53,800
180 WMR 74.0 2960 60,300
190 WMR 74.0 2920 59,500
200 WMR 69.0 2750 59,000
220 WMR 68.2 2665 59,800

Thomas Krupinski · « **Reply #6 on:** December 14, 2004, 02:28:24 AM »

Thank you, that's what I was looking for.

Did you happen to find any on the 7mm Rem Mag also?

jackfish · « **Reply #7 on:** December 14, 2004, 04:08:34 AM »

7mm Rem Mag wasn't on the sheet I got with the WMR I purchased.

Thomas Krupinski · « **Reply #8 on:** December 14, 2004, 04:44:53 AM »

Thanks for checking Jackfish, found a deal on it at http://www.recobstargetshop.com/index.htm where it is $5/lb. in cases of 10 one pound canisters.

Just ordered some as I have a 300 Win Mag Encore barrel coming soon. Hopefully someone will find a reference for it for the 7mm Rem Mag barrel I already have.

skb2706 · « **Reply #9 on:** December 14, 2004, 06:47:16 AM »

Tom haven't forgotten ya...
still looking for data book. I have it and haven't used it in years. I know that info is in it and I am at work now so I can't locate til this eve.

skb2706 · « **Reply #10 on:** December 16, 2004, 03:46:42 AM »

The sixth edition Hornady loading manual lists loads for the 7mm RM using WMR powders for several bullet weights.

120 gr. bullets
starting load 61.6 - 2900 fps
max load 70.4 - 3300 fps

139 gr. bullets
starting load 57.2 - 2700 fps
max load 70.3 - 3200 fps

154 gr. bullets
starting load 58.8 - 2600 fps
max loads 67.7 - 3000 fps

162 gr. bullet
starting load 56.7 - 2600 fps
max load 67.2 - 3000 fps

175 gr. bullet
starting load 55.3 - 2500 fps
max load 60.2 - 2700 fps

Thomas Krupinski · « **Reply #11 on:** December 16, 2004, 04:03:21 AM »

Thanks SKB, that's just what I was looking for. I am going to try to find a copy of that manual to research loads for any of the other cartridges I load for that would be suitable with that powder. I have 30# of it on the way. I think they have 20# of it left where I bought it.

jackfish · « **Reply #12 on:** December 16, 2004, 04:15:53 AM »

I still have 13 lbs. of it. Maybe I need to restock? What is the HAZMAT fee on 10 lbs.?

Thomas Krupinski · « **Reply #13 on:** December 16, 2004, 04:32:23 AM »

The hazmat was $20 for that shipment and with shipping it came to a total of $6.30 per pound.

skb2706 · « **Reply #14 on:** December 16, 2004, 04:41:37 AM »

I looked everywhere for my old Winchester Olin leaflet loading data.......found it but it was missing one page. The one with the 7mm RM data...figures. Anyway I realized my newest Hornady manual had that info. so that is what you got. If you want and have a fax machine I can reproduce it right from the pages.

Thomas Krupinski · « **Reply #15 on:** December 16, 2004, 04:51:46 AM »

Might take you up on that kind offer, but I am going to go out today and see if I can find that manual at one of the local shops.

Thanks for the info.