6.5-300 wby. mag.

[beanie bill]

i'm wondering if anyone has any info, comments or load data on this cartridge.
thanks greg

 

[superd222]

Hold on to your hat - that's gonna be fast!

I look forward to hearing about this...

 

[dan belisle]

Had one some years back, built on a Browning Mauser action. With the powders we had then all it would get me was about 100 fps faster then the 264 Win Mag. With some of the slower powders we have now, it would be worth trying again, but they are hard on barrels. - dan

 

[.Ben]

so this wildcat is a .300 Weatherby necked down to 6.5? sounds like it would be a flat but hard on barrels shooter....

 

[Eagleye]

but they are hard on barrels. - dan

You are truthful on that score Dan, especially if they are shot till they get really hot. We had a guy up here in North-Central BC who built one and then shot the h*** out of it. By the time he had 350 rounds through it, throat was toast. EE.

 

[beanie bill]

seems there have been a few around but not much info out there about this
wildcat. i'd be interested in load data if anyone has some. also group or velocity info. thanks

 

[dan belisle]

I still have some data at home I'm pretty sure, but I'm overseas for another couple of weeks. - dan

 

[redlaker1]

I always kinda wondered about this gap in the weatherby line, the 264 weatherby, for when the 257 just isnt enough, but the 270 weatherby is just plain overkill. must be so close to the 6.5-300win

 

[Andy]

The 6.5/300 Wby Mag is virtually identical to the 6.5 STW and the 6.5/300 WMH - do a search on those and loads will pop up.

I have a 6.5/300 Win Mag which is slightly smaller, and for bullets of 129gr and heavier, US869 is THE powder. Start at 264 Win Mag loads and work up until the MV is 150 fps faster than those published for the 264 Win Mag.

 

[beanie bill]

thanks for the help guys, and Dan if you get a chance to send some load data when you get home it would be much appreciated. thanks again. g

 

[Boomer]

I found some data for the 6.5-.300 Wby, the hottest load is a 139 gr bullet ahead of 87 grs of H-870 for 3590 fps from a 31" barrel. Although I don't recall the load, it seems to me that a woman shooting a 6.5-300 Wby held the 1000 yard record with a group of 7". This was listed in an earlier Sierra manual, so perhaps someone who has the older manual can post the load.

 

[Andy]

For light bullets: http://www.accuratereloading.com/65mmstw.html

For a range of bullets: http://www.kailuacustomguns.com/articles/264Thor.htm

The "264 Thor" is just a "6.5 STW" which is a "6.5/300 WMH" which is just a "6.5/300 Wby".

 

[Pathfinder]

And I thought the barrel on my 264 wm heated up quick....better have the ice bags ready.