300 SMK in 340 Weatherby
- Thread starter krlemas
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Re: 300 SMK in 340 Weatherby
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: krlemas</div><div class="ubbcode-body">Do you have any loading data or experience shooting the 300 gr. SMK or Berger in a 340 Weatherby. </div></div>
You're the first to ask, that I've read in 3+ years, but why not? Just get some reloading data for that cartridge with 275grs or 300s, if you can find it and start 10% below max charges. Am I correct in thinking that Weatherby rifles offer very long throats? This might be a good thing if you have the length in your mag, to seat the 300s out farther.
You be the guinnea pig and report back.
Start low and work up.
Chris
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: krlemas</div><div class="ubbcode-body">Do you have any loading data or experience shooting the 300 gr. SMK or Berger in a 340 Weatherby. </div></div>
You're the first to ask, that I've read in 3+ years, but why not? Just get some reloading data for that cartridge with 275grs or 300s, if you can find it and start 10% below max charges. Am I correct in thinking that Weatherby rifles offer very long throats? This might be a good thing if you have the length in your mag, to seat the 300s out farther.
You be the guinnea pig and report back.
Start low and work up.
Chris
Re: 300 SMK in 340 Weatherby
With the fps the 340 WBY would shoot the 300's at, the Berger 300 would be my first choice but either is a great bullet.
I would play around with a balistics calculator before I spend any money buying bullets. I'm not sure the 340 has enough horsepower to push a 300 grainer fast enough to make it out perform a 225 in the same gun.
With the fps the 340 WBY would shoot the 300's at, the Berger 300 would be my first choice but either is a great bullet.
I would play around with a balistics calculator before I spend any money buying bullets. I'm not sure the 340 has enough horsepower to push a 300 grainer fast enough to make it out perform a 225 in the same gun.
Re: 300 SMK in 340 Weatherby
The freebore in a factory WBY is ridiculously long.
I would bet a loaded 340 round with a 300gr bullet that was loaded out to touch the lands in a factory WBY rifle would be so long you would have to pull the bolt to extract a loaded round. That's just a guess but I would bet I'm not far off.
The freebore in a factory WBY is ridiculously long.
I would bet a loaded 340 round with a 300gr bullet that was loaded out to touch the lands in a factory WBY rifle would be so long you would have to pull the bolt to extract a loaded round. That's just a guess but I would bet I'm not far off.
Re: 300 SMK in 340 Weatherby
I completely forgot about twist.
What is the twist of your rifle? 1:10" or better, go for it. If it's 1:12" or 1:11" you might stick with the 250 SMKs and Scenars.
Chris
I completely forgot about twist.
What is the twist of your rifle? 1:10" or better, go for it. If it's 1:12" or 1:11" you might stick with the 250 SMKs and Scenars.
Chris
Re: 300 SMK in 340 Weatherby
Thanks for the replys, the twist is 1-10, the chamber is custom with less freebore and I just put a Wyatt extended mag box so I can load out to 3.8" and it is a push feed M70.Just thought if someone had already tried it I wouldn't re-invent the wheel. I will try some starting loads for the 270 gr bullets and back off about 5% and see what happens. Will let you know.
Ken
Thanks for the replys, the twist is 1-10, the chamber is custom with less freebore and I just put a Wyatt extended mag box so I can load out to 3.8" and it is a push feed M70.Just thought if someone had already tried it I wouldn't re-invent the wheel. I will try some starting loads for the 270 gr bullets and back off about 5% and see what happens. Will let you know.
Ken
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