I got the urge to have a 300g .338 bullet mold made.

[clutch]

I have a ruger .338 win mag 1:10 twist iirc. I was playing around at mountain molds and can get a 300g bullet made. Is this reasonable? Has anyone made one, is there any loading data, is this stupid, how fast do you think I can push it?

Thanks,

Clutch

[joecool911]

Not sure that the 338 is going to come into it's own with cast bullets? My favorite bullet is the Sierra 250 grain spitzer boat tail @ 2,800 fps. Great downrange energy retention and punch. 74 grains of Re-22 compressed load.

[Shooternz]

I was asked about this today except it was for use in a .338 Federal , down here
we have so I am told a large number of surpressed .338 Feds and the owners want to shoot 300 grain bullets in them,
I would be interested in any information on heavy .338 bullets.

Robert.

[rockrat]

BRP has a 275gr boolit design. Might be too light for your wants. I have one of his 310gr in my 375 H&H and it shoots very well, around an inch @100yds.

I would think you could push a 300gr to around 2400fps. Recoil WILL be noticeable.

[RobS]

Clutch:
MM mold's design program will limit you on your ogive length. outdoorfan designed a mold for his whelen and has some knowledge about this.

http://castboolits.gunloads.com/member.php?u=8546

Tom @ Accurate Molds may be a better route as he'll work just about anything for you.

[RobS]

+1 on rockrat's BRP statement. I have his 275 GC for my 375 H&H and it is golden.

[9.3X62AL]

It has been a LONG time since I played with a 338 Win Mag and castings, and I knew a whole lot less about making lead boolits work in rifles than I do know. My results back then weren't real spectacular--about 3" at 100 yards was as good as the Howa 1500 would do with the RCBS 200 grainer, and that was on a good day. It would print 250 grain Noslers or Sierras into 1.00" to 1.25"/5 shots very reliably, so I kinda threw in the towel after several months of disappointment and pistol-speed powders running boolits at 1300-1500 FPS. 3 prior 338s all shot j-words no worse than 1.5" @ 100 yards, as well.

If I had it to do over again, I would try no faster powder than Alliant 2400, and give some work to the 4895s while boosting the speeds into the 1700-1800 FPS ZIP Code. I would also be A LOT more cognizant of the rifle's throat dimensions--size the boolits accordingly--and be a lot more critical of boolit quality and tooling/boolit relationships than I was 15 years ago.

I consider the 338 Win Mag and the 375 H&H or be the best-balanced and most sensible belted magnum calibers ever birthed for North American large game hunting.

[scb]

Something like this?


http://i487.photobucket.com/albums/rr236/scb2008/341299.jpg

I'd like to try it in my 338 UltraCat.

[Hardcast416taylor]

It depends what your needs are in the .338 Win. Mag. BRP also makes a 250 gr. as well as a 230 and 200 gr. molds for the .338. Bruce at BRP is a vendor on the site, you might look him up and jaw with him for awhile and you might change your mind on the 300 gr. mold idea.Robert

[rockrat]

I had Tom at AM (accurate moulds) draw up a 240gr boolit to use in my 338 wm and 338ME. He just put it on his site Saturday, I think. I sent my order in yesterday. ALMOST ordered a BRP 230gr but wanted a little more weight.

If I was only shooting my 338 win mag, I would have gone with the 250gr BRP.

[white eagle]

don't do it man save yourself before its to late !!!!!!!!
I just got one for my 7mm