270 Weatherby powder

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Dannie Smith

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I have never loaded this one before and not sure about the powder to start with. I will be using 150gr bullet. I have done 30-06, 308, 223 but the powders I use for them I don't know if they will work. What powder would be good to use?

Thanks Dannie
 
Well no feedback yet, but I loaded up rounds with Reloder 22 for a Barnes TTSX 130gr bullet. First handloads for this rifle.

I borrowed the rifle from a friend just because I wanted a new rifle to develop a load for.

Looking forward to getting to the range.
 
Use Federal 215 primers. This primer was developed for the 300 Weatherby and has produced 5 shot groups of one inch or less in the 300, 340, and 378 Weatherby rifles. One time I tried a CCI 250 primers in a 300 Weatherby but could not get a group under two inches. All groups were shot at 100 yards.
 
I have reloaded for the 7mm Wea for over 20 years now and that is as close as you can get to the 270 Wea. Powders that have worked well for me are IMR/H 4350, RL 22, IMR 7828, VVN160, H1000. I normally load 150-160 gr bullets. Which one works best will depend on bullet weight and style but any in this burning rate range will work.
 
R22 works best for me. And I don't worry about loading the bullet long enough to touch the lands, it would take an OAL about a mile long to do that. R22 is what works for me. So does 7828 but I'll always try R22 first with any bullet. Mine shoots so much better with 140 grain, but yours might shoot 150 just as well.

What that guy rsnell says about Fed 215 seems right by me. Even Weatherby recommends it. Hard to find them in your region? Well, it's worth it.

Weatherby cartridges are tough on bullets, use premium stuff. Bullets. Brass. Primers. Always premium components in an Weatherby. They will perform much MUCH better under the high-stress conditions.
 
Reloader25 for accuracy, Retumbo for highest velocities.

You can reload it on the cheap by using some of the milsurp powders sold by Jeff Bartlett. His web site is: www.gi-brass.com

I've used WC860 in .257wby., .300RUM, .300winmag, .270wby, and 7mmRemMag.
Works great, but there are significant differences between individual lot#'s.
Also, watch MidwayUSA and Midsouth Shooters Supply for blem bullets.

Otherwise, you will find Hornady Interlok bullets perform as well as Nosler Partitions at 1/2 the price. They are what 'ol Roy used for decades in Weatherby factory ammo. But, Swift A-frames are probably my top recommendation. For extreme long range, the Swift Sirocco is good, but I prefer the flat base Hornady Interloks for general use. Also, the Speer HotCors I've recovered (very few) have held up very well.
I've generally gotten best accuracy with IMR4831, IMR7828, and RL22. But, as I posted earlier, Reloader25 is the standout.
Traditionally, H4831 has been the go-to powder for the Weatherby cartridges. It still works well.

Added; stick with the Norma/Weatherby brass. I've used other (Federal, Hornady, and re-formed Remington 7mmmag brass). They lack the uniformity and case capacity of the Norma/Weatherby cases. If you do use "other" brass, reduce starting loads by another 5%! You can get loaded Norma ammo for close to the same price as empty unprimed Weatherby brass. Other than a few range pickups or gifted cases, the loaded Norma ammo has been my source for Weatherby cases.
 
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I too have used Federal 215 or GMM215M primers when I could find them, but I have also used Rem 9 1/2 M primers with good success.

Also, be aware that the 257 Wea, 270 Wea and 7MM Wea are the exact same case except for neck diameter. You can simply run a 257 Wea or 7 mm Wea stamped case thru your 270 Wea die and you can successfully use them in your 270 Wea. Only caveat is that you must make sure that someone else does not get a hold of a resized case (resized to 270), stamped 257 Wea and try to shoot it in a 257 Wea rifle.
 
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