Thread: 6mm BR - 338 whisper conversion

Guy's, i'm working on the said conversion and wanting some direction on projectile choice. I'm going subsonic and want something in the 260 - 300gr range for Reds out to 250yrds +-. Open to any advice/direction!

If you want to go subsonic then you need to try something like these
.338 Controlled Fracturing 240gr Subsonic Bullet – Lehigh Defense, LLC

Normal bullets won't work at subsonic velocities

Thanks for the reply Stug. Are they available in NZ and other options?

I was keen on building a 338 whisper or 338 spectre but the brass is harder to get and limited to only a few projectiles so built a 300 Blackout instead.

Try these guys for projectiles they maybe able to get some .338 Controlled Fracturing 240gr Subsonic Bullets in for you.
Lehigh Bullets : Oceania Defence, Novel Weapon System Solutions

Try this thread http://www.nzhuntingandshooting.co.n...bullets-18479/

Thanks Guys, I will contact them and see what they can do, Cheers

Why not look at a 338 Federal cases made by necking up .308, I had the loan of a Sako .338 Federal a couple of years ago to play with some 310 gr cast bullets
quite impressed with it, only used it at short range the accuracy was pretty good with subsonic loads worth a look.

Fireflite

If your shooting subsonic only have you considered using cast projectiles?

A quick google showed quite a few people have gone down this route with heavy cast projectiles.

Quality hand-cast bullets for reloaders, competitors, and recreational shooters - 338 cal Rifle Bullets - Price List

Midway has some Sierra MatchKing 300gr HPBT projectiles which might also suit your needs.

Sierra MatchKing Bullets 338 Cal (338 Diameter) 300 Grain Hollow Point

Cheers
Pete

Hi shooternz, I've already got the rifle and 338 whisper/338 BR case is 1/2" shorter than the Federal. Cheers

Hi Pete, thanks for the info. I have sent a couple of emails regarding postage etc. Cheers

@Fireflite

No worries.

let us know how you get on with this project.

Cheers
Pete

So no replies to emails regarding postage of projectiles yet but a mate has donated some 300gr hybrids to try out. They are 12mm longer than the case in OA length. I'm converting 6mm BR Norma brass and have just received 6mm-.30, 7mm & 338 expanders, neck turner with carbide cutting pilot (to remove internal and external donuts) and a set of full length dies. Will post some photo's in a few days after I give them a try.