Home Forums Hunting & Shooting Custom Rifles & Wildcats 30-8mmRM / 30 STW

have built a number of the 30 caliber guns and is my favorite. i shoot barnes triple shock 180 at 3300 thru a 27" barrel and it is a hammer. will shoot in the 4s at 100 yds and will shoot under 1moa at 600yds. lothar barrels and remington action long mag azine box. i use winchester 7stw brass. this is a lot more gun than 300win mag. will do everything most ultras will do. i think remington should of used this case for its new cartridge. also shoot a 338 and a 358 and a 375 on this case all perform very well. imo

Thanks everyone, especially Big Stick, for the information. It is on my Christmas list...

Thanks again,

tq

I have a set of unused dies for it if ur interested. Just the reloading dies not the forming dies. They have never been used, an id let go reasonable. It still amazes me why none like the 8mm mag though. I loaded a 180 grain nosler BT to 3250 an took a nice ram with it. A bit much for sheep i know but it was an honest 450 yd shot.

Resurrecting this old thread. Not sure how long my 7STW barrel is going to hang on and punching a little bit bigger hole in Roosevelt elk might be a good thing.

Anyone hunting a 30stw? Just looking for people's thoughts. I have a pretty good supply of 7stw brass which should be one pass thru a die to be 30stw brass (as is 8mm mag brass)

I had a 300 Jarrett built 3 years ago and with a 27 1/2in length Kreiger barrel I was averaging 3508fps,using 165gr NBTS.It was VERY ACCURATE,but brass was very expensive.

i am still running one, about 7th barrel so far, 200 gr accubonds about 3130fps in a 26in barrel, id does kick in an 8.5 lb gun,
elk respect it though,,,,

and i have over 1000 8mm mag cases still, my dad shoots the 8mag doesnt use much brass, my brotheres and 2 uncles shootthe 7 stw, i am the black sheep with the 300stw,,,,

I'll toss in another angle for Ya! You can make up a longer necked 300 Win Mag. out of 300 Wea. brass, virgin or pull downs. I had my G.S. neck throat ream my Rem. 700 barrel for an extra 0.050 inch. Forming down Wea. brass to a crush fit shoulder, gives me reloaded cases right at .310 inch long necks, over the 300 Win. Mag's case body.

What I'm doing here is making a case in which I can load H-4895 in reduced loads. (300 Win. Mag.), and keep a decently long neck. I've worked up some loads around the 300 Savage recoil levels, and can still shoot full power commercial 300 Win Mag. ammo.

Remington puts really oversized chambers into its 700's barrels, so reloading ( neck sizing) commercial 300 Win. Mag. brass, only leaves me with about a 0.23" long neck. The 300 Win Mag is the largest 30 Magnum case which Hogdgon's will publish a reduced H 4895 load for. The heaviest bullet they recommend for this, is the 165gr.

I'm left handed, and shot right hand rifles for fifty years. Now I'm working up speed shooting drills for my left hand bolt rifles, using these reduced loads. I'm also switching over to left handed golf clubs, and that's even worse. But my P.H. was shooting circles around me back in 2012 in South Africa, and I determined to try and catch up, before going back.

Settling on the light loads, ( reduced), I am tuning up my re-barreled 338 R.U.M. 700, and will soon start jacking up the power levels, to real 300 Magnums' potentials.

My rear scope cover had to go, and I went up to Leupold's ultra high rings, for a little more clearance between my scope and the bolt handle.

In my own rifle, anyway, I had to change out the R.U.M mag follower, for a 300 Win. Mag. one. Remington service has several different ones for their 700 line. My 300 winnies were trying to go down one side of my magazine. The replacement follower, cured this completely.

My P.H. was using an older Rem. in 300 H & H which had been redone in 300 Wea.. He did get one jam while we were meat hunting Kudu, for the landowners, after I had filled my trophy agreement. No biggie, as he would have used his 475 Double Rifle for any D.G.

Remington matches the grinds on their feed rails and their followers to different cartridges. You can get into feeding problems pretty quick, by not watching out for this. I will put my 338 R.U.M. barrel and its correct magazine follower back on, before I ever would go Bear hunting, up North.

So far, anyway, the new follower lets the 300 Win Mags. run pretty slickly through this rifle. BTW, I had to order a RCBS F.L. 300 Win. Mag. sizing die to reform these 300 Wea. cases. The Hornady 300 Win Mag. die set has a fatal constriction, below their Zip Spindle's seat.

The RCBS tech., down in Oroville, also warned me to polish out any wire edge in their sizing die, as my longer necks actually kiss the bottom thread, which was tapped for the decapping rod.

If anyone here tries to go from a Remington 700 in 300 Win. Mag. out to this 30-8mmRM, I'd pay real close attention to the above concerns. Re-barreling a R.U.M. 700 to the smaller diameter case, may well require the different magazine follower. But this may have something more to do with my Left Hand model 700. These followers, and the bottom metal, are neither right nor left handed.

"I'll toss in another angle for Ya! You can make up a longer necked 300 Win Mag. out of............."

.300H&H casings (Fred Huntington's version)

I am working loads for a guy that had all of his data destroyed in a fire, but fortunately the rifle and some ammo was in his truck. I could sure use some help in any load data that you might have that I could use.
I am also going to redo another rifle in the 30-8mag as soon as I can find out if it can be rechambered from a 300 win mag. Poor boy setup but that's the way it is.