You want to avoid a stuck bullet and pressure is not an issue, so start with 11 grains and work down to 1000 fps. 2.120 OAL for a Sierra 220.
OK went through some more loads today down at the Grove. Just doing hi and low of the 5 shot strings now. All groups 100 Yards all loads in LC brass with Tula 223 primers
178Gr Hornady Match AA1680 14.4 Grains 2.22 OAl could go hotter very consistent velocity's but not very accurate I was surprised 2" or bigger groups
SD 7.14
ES 18.39
AV 1736
HI 1743
LO 1725
110gr Barnes TTSX H110 19.4 Grains 2.05 OAL good velocity not supper accurate 1 1/2" groups nothing to brag about.
SD 14.01
ES 34.77
AV 2424
HI 2435
LO 2400
110gr Barnes TTSX H110 20 Grains 2.05 OAL groups opened up even more with this load I need to try a lighter load I think
SD 8.00
ES 19.58
AV 2463
HI 2474
LO 2455
110gr Hornady Vmax H110 20 Grains 2.05 OAL good groups almost 1MOA.
SD 10.04
ES 25.69
AV 2401
HI 2412
LO 2386
110gr Hornady Vmax H110 20.5 grains 2.05 OAL Best groups 5 shots all touching under 1" very pleased pressure signs were light this will be the load I use.
SD 6.63
ES 16.09
AV 2431
HI 2437
LO 2420
110gr Hornady Vmax H110 21 grains 2.05 OAL to much signs of pressure but she was fast but groups did open up as well as to hot of a load.
SD 17.74
ES 45.74
AV 2501
HI 2517
LO 2471
__________________
Ed
NRA Member
Utah CCW Holder
MD Designated Collector
Gun Fanatic
Here are some more from earlier in the week Same thing LC brass Tula .223 primers 16" Wilson Combat barrel groups at 100 yards.
165gr Speer SPBT H110 16 grains 2.15 OAL shot OK 1 1/2-2" groups no signs of high pressure.
SD 6.16
ES 17.19
AV 1827
HI 1835
LO 1817
125gs Nosler BTBT H110 18.6 grains 2.13 OAL showed minimal pressure signs nothing that worried me shot very well 4 out the 5 touching ever group always had one a Little outside could be me and my 7 power scope but group were under 1 1/2" every time
SD 13.11
ES 39.47
AV 2197
HI 2216
LO 2177
150gr Nosler BTBT H110 16.7 2.13 OAL no pressure signs grouped OK nothing to brag about 125gr are much better in my rifle. If i could get 2000fps with the 150 and tighten the groups just a bit I think it would be a good deer round.
SD 10.19
ES 28.89
AV 1945
HI 1953
LO 1924
__________________
Ed
NRA Member
Utah CCW Holder
MD Designated Collector
Gun Fanatic
The 125gr NBT doesn't come apart much, the 150gr may not upset at all at the lower velocity.
The slower speeds in the 300 BLK means you can use bullet weights that would be considered varmint weight in a 308/30-06, and they will hold together and penetrate enough.
Back in the mid 1990's I was working with a small sako action and the 7.62 x 39 cartridge built by Bill Wiseman for me. Before taking it on a mountain lion hunt I decided to try it on a deer for terminal effectiveness. My muzzle velocity was in the 2225 ft/sec range and the impact distance was approximately 100 yards. The bullet performed like a controled expansion soft, held together very well. I would think them excellent for pigs. The mountain lion also suffered the fate of the BT.
I am loading 125 grain Sierra Pro Hunters now and am getting 2300fps out of them I will be using them on deer this year.
Ed
That may be a little warm. 2250 fps is probably where I would stop. depending on your powder and OAL. The factory 125 grain ammo is about 2220 fps.
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