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Daniel Rando's picture
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HELP LOAD .308 noslar 220grain

Hello BGH.I would like to thank the man that told me to carry my question to a new topic .

What charge would you start start loading a .308 with shooting a 220 grain noslar I would like to start with Varget, IMR4350, or  Trail Boss. 

                         START                                                                 MAX
Powder               GR              fps                                              GR          fps

H 4831              43              1983                                             47            2286
H450                 44              1961                                             48            2203
H4350               43              2142                                             46            2369
H414                 40.5           2110                                             44            2289
H380                 39.5           2118                                             43            2286
H4895               34              2014                                             37            2224
BL-C(2)             35              2080                                             38            2240
H335                 34              2047                                             36            2216

W760                42              2177                                             44            2295  

Can you tell me what the ft/lbs energy is for these loads?

 

CVC
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I am sure some of the experts

I am sure some of the experts on here will jump in and provide advice.  I too am interested to hear what they say simply because of the powders you list.  I have some of them myself and like to hear why they would pick one over the other.

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Anything over 180gr in 308 is

Anything over 180gr in 308 is not really a good choice. Problem is the 308 can't give that bullet sufficent velocity. Even the 180gr bullet is better in the 30-06. The really heavy bullet's are best left to 300 magnum's.

Oh the powder's you listed, I would choose the ball powders, H414, W760. H335 and H380. Reason is you'll have a lot easier time getting them in the case. The tube type powder's you may find either compressed loads or loads that just won't fit in the case.

To figure energy: velocity times velocity devided by 7000 (# grains in a pound) devided by 64.32 (specific weight of gravity) times the bullet weight in grains = foot lbs energy

308 220gr @ 2200fps:

2200x2200=4840000 devide by 7000 = 691.4 devide by 64.32 = 10.79 x 220 = 2265 ft lbs e

Daniel Rando's picture
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TY

Thank You

Tndeerhunter's picture
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I'll check for you

I'll check tomorrow, if I get to my work computer that has the Ballistics Calculator I need to give the numbers. I won't do EVERY combo there, but give you the bottom and top for a few representative ones.

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220gr in a 308? Yeah, don't

220gr in a 308? Yeah, don't do that. If its a standard twist barrel (1:12), I highly doubt the bullet will stabilize, meaning the bullet will not be rotating fast enough when it exists the barrel.

Daniel Rando's picture
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Thanks

Its a 1:10

Tndeerhunter's picture
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energy levels with 220gr bullet

Daniel Rando wrote:

Hello BGH.I would like to thank the man that told me to carry my question to a new topic .

What charge would you start start loading a .308 with shooting a 220 grain noslar I would like to start with Varget, IMR4350, or  Trail Boss. 

                         START                                                                 MAX
Powder               GR              fps                                              GR          fps

H 4831              43              1983                                             47            2286
H450                 44              1961                                             48            2203
H4350               43              2142                                             46            2369
H414                 40.5           2110                                             44            2289
H380                 39.5           2118                                             43            2286
H4895               34              2014                                             37            2224
BL-C(2)             35              2080                                             38            2240
H335                 34              2047                                             36            2216

W760                42              2177                                             44            2295  

Can you tell me what the ft/lbs energy is for these loads?

 

 

Here's some numbers for you to compare: at 1900 FPS 1763 FPE

                                                                2000 FPS  1954 FPE

                                                                2100 FPS  2154 FPE

                                                                2200 FPS  2364 FPE

                                                                2300 FPS  2584 FPE

                                                                2400 FPS  2813 FPE

Hope that helps! 

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Ditto

I'm no expert on the subject - and I know you didn't ask me - but I was going to say the same thing about that heavy bullet in the .308.

My only big game rifle is a .308 and I have done all my reloading since I got it over 40 years ago.

In all the reading that I have done concerning it, I have always heard that it is very inefficient with heavy bullets.

By the way, if you do a Google for Ballistic Calculator, you'll find that Remington, Winchester, Hornady, etc. all have online ballistic calculators that you can easily plug in your info and get immediate answers.

Good luck.

 

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re:

This is the one area where the 30.06 and the 300`s pull away from the .308.

The right twist would be 1:12 or 1:10,later being most perferable. Out of the powders you list Id try H4831,H450 but H4350 would be the most perfered bepending on how much compression they have due to seating depth and you might end up needing to use magnum primers at that.

Another one to look at for that bullet is 4198

Hope this helps

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i've used both varget and

i've used both varget and r-19. r-19 gives me a compressed load and it scares me a little to be honest.

however. compressed loads are, theoretically, significantly more consistant.

imr is owned by hodgdon and that's the 4895, i have used that as well with good results.

since the 220 grain bullet is so long, it will be significantly deeper in the shell casing. i am in the belief that this will be decreasing the efficiency of the cartridge. this info would make me choose two powders and test them at the range. one a fast-burning and one a slow burning powder.

that being said. why do you need a 220 gr bullet? i think you'd do better with a barnes tsx in 180 grain. the sierra 220 is a HP or a soft point?

for a 30 caliber, i'm not sure you need anything heavier than 165 gr for any game in North America. you see, there's a trade off between weight and velocity for each caliber. in this case, about 165 gr is about the best combination  between weight and speed you can get.

i'd start with 4895 and 4350 and r-19 if you're feeling frisky and want to try something new.

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