Author Topic: Anyone ever try a .311 100 grain pistol bullet in 7.62x39 cartridge?  (Read 1473 times)

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122andy

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Has anyone ever tried this? It looks like there a a few choices in .311 or .312 that are in the 100 grain neighborhood. Any real world experience?

Phobos84

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Re: Anyone ever try a .311 100 grain pistol bullet in 7.62x39 cartridge?
« Reply #1 on: July 01, 2009, 04:18:02 PM »
What bullet exactly are you talking about?  One point of caution, I've seen some that are plated instead of having a true jacket.  You can only load these to about 1400 fps or you'll get lead fouling.  At that low of velocity your action won't cycle. 

But if you had a true jacketed bullet that was a .311 diameter you could load it into 7.62x39.  You would have to be careful with the bullet length.  Since most pistol bullets are rounded you would have a shorter length and that will change your load data a bit.
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122andy

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Re: Anyone ever try a .311 100 grain pistol bullet in 7.62x39 cartridge?
« Reply #2 on: July 01, 2009, 06:55:23 PM »
Speer makes a .312 100gr JHP, I dont see why it wouldnt work, just thought it might be fun to try unless I'm told otherwise.
« Last Edit: July 01, 2009, 07:07:16 PM by 122andy »

Phobos84

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Re: Anyone ever try a .311 100 grain pistol bullet in 7.62x39 cartridge?
« Reply #3 on: July 01, 2009, 09:04:41 PM »
It should work just as long as you keep the load on the light side.  Most SKS's have a .311 or .310 bore.  .312 will work just fine but will build just a little more pressure.  All I'm saying is stay away from any published max loads and it should be fine.

Do you have an inexpensive source for the Speers?  Reason I ask is if not then there are plenty of other more cost effective bullets that would be much less money.
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Fullauto

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Re: Anyone ever try a .311 100 grain pistol bullet in 7.62x39 cartridge?
« Reply #4 on: July 02, 2009, 04:59:13 AM »
A friend tried some Hornady .311 100 grain handgun bullets in a 303 British which achieved impressive expansion but accuracy was appalling. I also pulled some bullets out of Norinco 7.62 x 39 cases and loaded them in the 303 british but bullets wouldn't stabilise and the targets showed that the bullets were indeed keyholing.

122andy

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Re: Anyone ever try a .311 100 grain pistol bullet in 7.62x39 cartridge?
« Reply #5 on: July 02, 2009, 08:09:16 AM »
Maybe it would work better in the x39 since the average load for it is ~123gr vs the average bullet for the 303 being what 150gr? I have seen some load data for 110 gr .308, which leads into a whole other option, trying .308 sized bullets instead of something from am 32. Possibilities are endless there. I was just seeing if anyone had tried something lighter than standard ~123gr stuff.

nhblaze

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Re: Anyone ever try a .311 100 grain pistol bullet in 7.62x39 cartridge?
« Reply #6 on: July 03, 2009, 09:11:40 AM »
303 Brit wants a very long bullet because of it throat dimensions

The Hornady 100 gr handgun bullets fit the dimensions but are too short

The 115 gr cast handgun bullets are longer and would work better in an SKS, .312 or .313 diam.

I have know people to load these for the SKS with success but I think it is more cost effective
to buy the correct bullet, but lately that may be hard to do  :x
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Groovy Mike

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Re: Anyone ever try a .311 100 grain pistol bullet in 7.62x39 cartridge?
« Reply #7 on: July 03, 2009, 08:57:52 PM »
great idea!  I wonder if a round ball would work....
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Fullauto

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Re: Anyone ever try a .311 100 grain pistol bullet in 7.62x39 cartridge?
« Reply #8 on: July 03, 2009, 11:45:56 PM »
Regarding cast bullets you may be able to push the velocity a little more 1400ft per second by using harder bullets with gas checks. I push cast bullets at around 1700ft per second in my .357 mag carbine with no gas checks just a slightly harder alloy.

nhblaze

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Re: Anyone ever try a .311 100 grain pistol bullet in 7.62x39 cartridge?
« Reply #9 on: July 09, 2009, 11:18:26 AM »
Good point FullAuto

A cast bullet with a Brinell Hardness Rating (BRH) of 16 should be able to go 1600 fps
without any serious leading or gas check.

but at lower velocities a softer bullet will give better accuracy, it's finding the correct balance.
My retirement plan is simple, I'm only working until
noon the day of my funeral.