308Win, Win 748, 150g Fail Safe & Ballistic Silver Tips

B.Ruddick

B.Ruddick

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OK, here it is,
I have in the reloading room
308Win
Win 748 Powder
150g Fail Safe Bullets
150g Ballistic Silver Tip Bullets
Full Length & Small Base dies at hand

Barrel is 20" (Semi Auto)

I would like to get some higher velocities out this combo, any suggestions, I did have someone give me a suggestion earlier, but I have miss placed the paper I wrote it down on.
None of my books list any info on this combination.

Other powders available are
IMR 4350 (Probably not a good choice)
Win 760
Reloader 22 (Probably not a good choice)

Unfortunately no one had any Varget or Reloader 15 on hand.:(
 
fill the case to the top and seat a bullet, and fire them in your rifle in a rapid fire fasion in a gravel pit, offhand with no hearing protection
 
todbartell said:
fill the case to the top and seat a bullet, and fire them in your rifle in a rapid fire fasion in a gravel pit, offhand with no hearing protection
Click to expand...
Do you really find it funny to give people extremely dangerous advice?
 
todbartell said:
fill the case to the top and seat a bullet, and fire them in your rifle in a rapid fire fasion in a gravel pit, offhand with no hearing protection
Click to expand...

Thanks Tod, I'll get right on it.................................................NOT!:p
No this semi auto is a Rem 742 from 1967 "a Canadian Centenial Rifle" I would like it to last without wearing it out to the point of no good.


Boney - I did try to locate some H4895, but heard that 748 was at hand and would work just fine, however I don't have any info for this combo, as mentioned earlier, I miss placed the 748 recipe that I wrote down on a piece of paper.
 
Speer manual # 13... 308Win using 150 grain bullets(22 inch barrel,Remington 700)primers:cci 200,250,No.34(The number 34 primers are the ballistic equivalent of the 250 primers.They are recommended for military style semi-automatic rifles.

Start:46.0 grains 748- 2653fps
Max: 50.0C grains748- 2869fps

Sierra manual fifth edition: 308 win using 150 grain bullets,Fed 210 primers.26 inch barrel!!! Savage M-12

748
Start: 42.8g-2600fps
Max: 47.9g- 2900fps

Hornady Manual fifth edition: 308 win 150 bullets-Federal 210 primers 22 inch barrel!M-70

748 Start: 40.3g-2300fps
Max: 46.7g-2700fps

Nosler manual does not list 748 used with 150 grain bullets.
I hope this may have helped!
Start low and work up,and crimp those bullets!Good luck!
 
With 150 Nosler Ballistic Tips, 47.0 gr.of Varget or 49.0 gr. of IMR 4320
according to Hodgdon Data, is supposed to give 2937 from a 24" barrel ... you will give up a little in your 20" barrel.
 
All 3 of your alternative powders are too slow for the 308 / 150 grain combination. Your best bet is to stick to your 748 unless you can access some different powder.

You need a powder in the same general burn range of your Winchester 748. Hodgdon's Varget, IMR 4064, Reloder 15 etc will all work.

BTW, You also do not want to start "hot-rodding" any loads used in your self-loader. They are designed to operate over a fairly narrow pressure range and overloading will break parts, guaranteed.
 
748 is one of the all time classic 308 powders. Look at the Winchester site for load data, there is a ton of info out there for this powder.
bigbull
 
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