Home Forums Reloading Big Game Rifles 200gr bullets in 300 win mag: is it just me?

Bob, on my model 70's in 300 win mag and 338 win mag I have removed the magazine spacer. Feeding is excellant and depending on how your chamber is cut reaching the lands is doable.

As for the comment about 200 gr bullets eating up too much capacity in a 300 win mag. Sounds like alot of BS IME. My win mag shoots 200 gr Accubonds to 3000fps using a Lapua brass, GM215 and Retumbo. Brass life is excellent. And the AB is a very long bullet.
Its a shame Lapua discontinued the 300 win mag brass as it was tops.

I would imagine thats a pretty compressed load?

I switched from RL-22 to RL-25 for 200 grainers. Yes, these loads are compressed, NBD.

There are a lot of 223 loads used in matches that are a lot more compressed than even the shortest 300 Winny O.A.L., throw the 308 in there too.

My Sucks just happens to have the mag length and throat to get'em out there; a buddy's 70 won't go that far but I never noticed the speed suffering.

I actually had an awesome load worked up with 165NBT and RL25 never had a desire to hunt with it but was fun to punch paper!

Its been a hell of a good powder for me so far, as I've been dinking with it this summer.

Its worked damnfine in the 416 Rigby, the 338 Winny too, where its even more compressed

Its a slightly compressed load.
I know this powder should be too slow, but it works great and I get very low ES, consistently great accuracy and seems to be pretty temp stable.

I may have to give it another go with the 180 and 200's!

Bwalker: Thanks for that suggestion. I used to buy the parts to lengthen the magazine to H&H length from Winchester;box, follower,ejctor,etc. Worked swell.

I am going to run 180's in the rifle anyway so I think it will work fine.Most likely due to their length,the 180's to 200's seem to jump that throat and stay lined up better than the lighter bullets. Who knows?

Bob, when I have done it I sued the teflon coated 7mmstw follower and the factory box. I drilled the spot welds out, removed the spacer , then tig welded the back seem of the box together.
Originally I purchased a new box, but after trying several different boxes and followers I came to the conclusion this combo worked best.
Winchesters parts list doesn't explain which gun each part is for so it takes allot of trial and error buying follower and boxes to find a combo that works right.

Thought I would share this load with you. This was my go to load on the 300 Win.

Winchester Brass, Fed 215M Match Primer, 200 Gr. Barnes Triple Shock bullet, 71 grains of Reloader 22, OACL=3.383

The load was quite consistent. Groups were always under an inch and as low as .5" depending upon conditions. Because of the limitation of the box, I used an overall cartridge length based upon cartridge base to bullet tip rather than measuring off the ogive.

Regardless, good luck!
Elk

B: I asked the lady at customer service to just give me follower and box,etc for the 375H&H;always worked well.This one I just picked up(NIB stainless synthetic,price too good to pass)may go away for full treatment,ie new stock and true up the metal,etc.

Wonder if Brownell has the parts I need for the magazine?

Bob, I tried that rought, but the 375 box they sent had a stepped side unlike the factory box for a win mag. To work properly this stepped box has to have a action with a smaller feed rail area/action opening.

Another vote for the 200 grain sierra gamekings. They provided great accuracy and bc in my 300.

And boy, did I ever find that they pounded heck out of game big and small!

Dober

Mark,

What have you shot with them?

I have always put the Partitions to use, always choosing the Sierra's for the target work.

I appreciate your input.

Nate

Nate,

Lets just say it runs from rockchucks to elk and lot of stuff in between. I have no issues with the slug after doing the work with them and actually really kind of like it.

Dober

Thanks Mark!

They always shot oustanding and I can trade them in my rifle with Partitions without POI worries; used them to 400 on the range.

Nice to have its game performance substantiated

The bigger gamekings I have shot seem quite hard and I actually have not recovered one in any deer shot with them. Never shot an elk with one.

I bought all the Federal High Energy ammo I could find with the 200gr Partition at a advertised 2930fps. This load shoots under an inch at 300 yards in my Steyr. Took lots of Game in SA too. I'm anxious about the time when i run out of federal ammo. But I suspect that the 200 Accubond will fill the bill with some H1000 or 7828SSC.