300 Blackout and 30-30 round nose projectiles?

[BeauxKneauxs]

This is not a new idea, however I searched this forum and my search results yielded no answers. Do any of you have experience handloading .30-30 round nose projectiles in the 300 Blackout? Perhaps the Sierra Pro Hunter 150gr? For an AR15 of course, so feeding reliably is a must. I'm sure T.O.S. has discussed this but I'm not a member.

[ace4059]

I used the 125 gr Sierra pro hunters that are round nose and flat base. I tried them for hunting but they would not expand reliably so I stopped using them. I've also used 150gr flat nose copper washed lead rounds and they worked just so so. I would have a jam with about 1 in 50.

[LoboTBL]

Beaux, I'm not about to claim to be an expert on reloading for 300 BLK. That said, I've been reloading them since shortly after the cartridge was developed and standardized and I built myself an AR chambered for it.

I've tried several powders and bullets and here is what I've found works for me so far in the AR platform.

Powders
H110/Win296 are both excellent for supers w/ bullets 110 - 180 gr
Lil'GUN is also very good for supers w/ bullets 110 - 180 gr
Alliant 300-MP is great for supers w/ bullets 110 - 150 gr
IMR4227 and AA9 is good for supers w/ bullets 100 - 150 gr (leaning toward being better w/ lighter in that range)
Alliant 2400 was also good for supers w/ bullets 100 - 150 gr

I haven't done much experimentation with subs.

Bullets
Hornady 100 gr SJ - great little plinking bullet that feeds/functions much better than the RN bullets designed for 30 Carbine and also very economical
Hornady 110 gr V-MAX
Sierra 110 gr HP
Barnes 110 gr M/LE Tac-TX (Black Tips) generally considered the benchmark for 300 BLK bullet but pricey
Sierra 125 gr Spitzer
Speer 125 gr TNT-HP
147 gr FMJ military ball 'pulls' also very economical heavier plinking round
Hornady 150 gr Interlock SP
Hornady 165 gr Interlock SP
Hornady 180 gr Interlock SP

The RN and FP bullets I tried from different manufacturers in 150 and 170 gr didn't feed/function well, possibly because of the amount the bullets are canted inward in the magazine. I've considered but haven't yet tried the 140 gr Monoflex or the 160 gr FTX. YMMV

Lobo

[BeauxKneauxs]

Thanks! Good info. May have to do some testing myself.

[LoboTBL]

There are also some very informative threads at 300blktalk.com

[Stengun]

Howdy,

I use the Speer 125gr TNT bullet and 18.1gr oh H110 for hunting/SD/HD loads. The Sierra 135gr Varminter will work too. As far as plinking loads go I still use the 125gr TNT bullet because it's cheap and works great in my gun.

Subsonic loads I use the Nosler 220gr BTHP-M bullet and 9.2gr of H110.
HTH

Paul