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300 WM w/ 165 SST or GMX?

Posted By: Revoman

300 WM w/ 165 SST or GMX? - 01/05/15 03:04 PM

Looking to load these two bullets in the new 300 and wondering if anyone has any data or luck reloading them. I have lots of 4831SC but been thinking either IMR7828 or Win 780
Posted By: redchevy

Re: 300 WM w/ 165 SST or GMX? - 01/05/15 04:50 PM

For that weight of bullet I'm thinking the 4831SC would be the better option for you.

Depending on what your doing with them, I wouldn't recommend either of those bullets. I have shot the 165 GMX's out of a 300 wby max loads and if you don't hit heavy bone they wouldn't expand reliably. I think the 165 SST's would be a grenade at 300 WM velocities. All what you want out of a bullet I guess.
Posted By: Revoman

Re: 300 WM w/ 165 SST or GMX? - 01/08/15 09:10 PM

Probably go with 165 Accubonds , have great luck with them in 7mm pushed fast
Posted By: redchevy

Re: 300 WM w/ 165 SST or GMX? - 01/08/15 10:25 PM

My 300 wby likes the 165 accubonds
Posted By: bcranch

Re: 300 WM w/ 165 SST or GMX? - 01/10/15 11:33 PM

My son shot a cow elk at 300 yds with 165gr GMXs out of his 300 Win mag and had great results. About 4 feet of penetration. Can't help with load data because they were factory superformance loads but I can recommend the bullet.
Posted By: STX Hog Hunter

Re: 300 WM w/ 165 SST or GMX? - 01/11/15 02:20 PM

I think the GMX will work fine. I used to shoot factory superformance GMX out of my 308's before I got into hand loading and they always performed well even when shot out of a 16 inch 308 AR. Shot a bunch of hogs and several deer with em and they always seemed to open up properly.
Posted By: Bbear

Re: 300 WM w/ 165 SST or GMX? - 01/13/15 01:54 AM

I tried the 165 SST's out of my 300. First shot was a Texas whitetail at approximately 140 yards. Left a 5" exit hole. Look at the GMX or as the other poster stated, the Nosler Accubonds or similar bonded bullet.
Posted By: Triplesnake

Re: 300 WM w/ 165 SST or GMX? - 01/23/15 03:22 PM

My 300Wm loves the 165 Accubond. I shot a good KS buck with it a few years ago at fairly close range. I was quite pleased with its performance; good expansion and complete penetration. I don't remember the load off the top of my head, but I'm pretty sure 7828 would be too slow for that light bullet weight.
Posted By: tth_40

Re: 300 WM w/ 165 SST or GMX? - 01/23/15 04:17 PM

IMO, IMR 4831 would be a good one, or IMR 4350. Maybe something like Accurate Mag Pro or RE 22 would be worth a try as well.
Posted By: Birdog62

Re: 300 WM w/ 165 SST or GMX? - 01/23/15 07:50 PM

Not to hijack the thread, but what do y'all think about H1000 for this weight bullet?
Posted By: Triplesnake

Re: 300 WM w/ 165 SST or GMX? - 01/25/15 10:09 PM

Probably also too slow. That's what I use for 180gr loads.
Posted By: Birdog62

Re: 300 WM w/ 165 SST or GMX? - 01/26/15 02:23 AM

Originally Posted By: Fire1
Probably also too slow. That's what I use for 180gr loads.

Thanks, I have about 5 lbs . I'm needing to use.
Posted By: 30378

Re: 300 WM w/ 165 SST or GMX? - 01/26/15 02:33 AM

For years I shot RL-22 in my 300 Win mag. Tried RL-25 and never looked back. Gives @ 100fps more then RL-22 and just as accurate. I shoot 165 Accubonds with 82.5gr of RL-25, CCI250 primers and Winchester brass.
Posted By: Revoman

Re: 300 WM w/ 165 SST or GMX? - 01/26/15 04:21 AM

Mainly using my 300 for mule deer in pretty open country. I have a box of factory GMX that I will try when I get the gun bedded. Will try powders that I have on hand, H4831 SC and 4350. I've been shooting Hornady's 150 Whitetail ammo building up brass. This stuff shoots great in my gun. I wouldn't hesitate on shooting anything in Texas with it.
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