75 gr.HPBT bullet and Win748 powder (.223)

cuate · June 15, 2007, 06:49 PM

I have 3 or 4 reloading manuals and have been online to Winchester but cannot locate a proper starting load for loading 75gr. hpbt bullets with Win748 ball powder in .223 cases. I usually load 62 grainers with 25 grs. of Win748 and as I really like this particular powder I want to stay with it.

I am pretty conservative and not seeking hot loads, just a decent, safe starting point. I did load one round with 21.5 grs. of 748 behind the 75 gr.
bullet mentioned, fired it in my AR and closely examined the fired case for signs of extreme pressure. It looked great but I did not fire for accuracy.

If any of you have any info pertaining to the above, I sure would appreciate it. Like Pilots, there are no old + bold pilots or reloaders. Too bold and one doesn't get old.

shooter_john · June 15, 2007, 07:56 PM

I'll check my Lyman 48th, I'm quite sure there is a load for that combo in there.

mc223 · June 15, 2007, 09:02 PM

23.3 is a max in my data, as 748 tends to show some pressure issues at warmer temperatures. In my opinion there are far superior performing powders available, that are less temperature sensitive. If 748 is all you have, work up cautiously and watch your primers for excessive cratering and piercing.

Scroll down the page to some load data. Lots of other good stuff on the page and the site.

http://www.radomski.us/njhp/cart_tech.htm

629 shooter · June 15, 2007, 09:40 PM

Not sure what brand bullet you have? If it is Hornady my6th Edition Hornady manual shows for their 75 BTHP with Win 748 : 20.2 - 24.0

cuate · June 15, 2007, 10:47 PM

I certainly appreciate all of your input and you have been a great help. The bullets are Hornady by the way, 75Gr. BTHP Match #2279.

For the time being I will stick with Win748 but you can believe I won't load over 23.3grs. if that much. Now to see if I can get an idea about accuracy.

Thanks a million......

June 15, 2007, 06:49 PM	#1
cuate Junior member Join Date: February 18, 2005 Location: Comanche Co. Texas Posts: 737	75 gr.HPBT bullet and Win748 powder (.223) I have 3 or 4 reloading manuals and have been online to Winchester but cannot locate a proper starting load for loading 75gr. hpbt bullets with Win748 ball powder in .223 cases. I usually load 62 grainers with 25 grs. of Win748 and as I really like this particular powder I want to stay with it. I am pretty conservative and not seeking hot loads, just a decent, safe starting point. I did load one round with 21.5 grs. of 748 behind the 75 gr. bullet mentioned, fired it in my AR and closely examined the fired case for signs of extreme pressure. It looked great but I did not fire for accuracy. If any of you have any info pertaining to the above, I sure would appreciate it. Like Pilots, there are no old + bold pilots or reloaders. Too bold and one doesn't get old.

June 15, 2007, 09:40 PM	#4
629 shooter Senior Member Join Date: February 9, 2002 Location: IN , USA Posts: 967	Not sure what brand bullet you have? If it is Hornady my6th Edition Hornady manual shows for their 75 BTHP with Win 748 : 20.2 - 24.0 __________________ "One of the penalties for refusing to participate in politics is that you end up being governed by your inferiors."

June 15, 2007, 07:56 PM	#2
shooter_john Senior Member Join Date: December 11, 2002 Location: ALABAMA Posts: 1,472	I'll check my Lyman 48th, I'm quite sure there is a load for that combo in there. __________________ TROTAC.com

June 15, 2007, 09:02 PM	#3
mc223 Senior Member Join Date: January 20, 2007 Location: n/w Wisconsin Posts: 365	23.3 is a max in my data, as 748 tends to show some pressure issues at warmer temperatures. In my opinion there are far superior performing powders available, that are less temperature sensitive. If 748 is all you have, work up cautiously and watch your primers for excessive cratering and piercing. Scroll down the page to some load data. Lots of other good stuff on the page and the site. http://www.radomski.us/njhp/cart_tech.htm

June 15, 2007, 10:47 PM	#5
cuate Junior member Join Date: February 18, 2005 Location: Comanche Co. Texas Posts: 737	I certainly appreciate all of your input and you have been a great help. The bullets are Hornady by the way, 75Gr. BTHP Match #2279. For the time being I will stick with Win748 but you can believe I won't load over 23.3grs. if that much. Now to see if I can get an idea about accuracy. Thanks a million......