New Sierra 230gr SMK

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AlexE
Posts: 32
Joined: Fri Feb 16, 2018 9:18 am

New Sierra 230gr SMK

#1 Postby AlexE » Wed Feb 28, 2018 5:46 pm

Has anyone seen these (or any of Sierra's other heavy high BC mm) in Australia yet?

If the numbers are to be believed, they offer a significant advantage over the Berger 230 hybrid with a g1 of 0.8 and should put a 300wsm well ahead of a Saum in terms of of drift, albeit at the cost of recoil.

I have 500 110smks on the way from Brownells Australia for a 6brx, but they aren't listing the 230 and everything from there is hellishly expensive. I'm keen to see what the Australian importer is bringing in and what the cost will be.

Cheerio,
Alex

bruce moulds
Posts: 2326
Joined: Sun Jun 19, 2005 4:07 pm

Re: New Sierra 230gr SMK

#2 Postby bruce moulds » Wed Feb 28, 2018 7:06 pm

when you say drift, do you mean deflection?
the twist required to stablize them will give them more drift than a shorter bullet with appropriate twist.
keep safe,
bruce.
"SUCH IS LIFE" Edward Kelly 11 nov 1880
http://youtu.be/YRaRCCZjdTM

AlexE
Posts: 32
Joined: Fri Feb 16, 2018 9:18 am

Re: New Sierra 230gr SMK

#3 Postby AlexE » Wed Feb 28, 2018 7:35 pm

Drift/deflection due to wind, Bruce. My apologies if there's a more appropriate term I should be using.

0.8 g1 BC at 2850 fps (as fast as I can go accurately with 230 Bergers) is surely something to be reckoned with?

macguru
Posts: 1227
Joined: Wed Aug 05, 2009 9:49 am

Re: New Sierra 230gr SMK

#4 Postby macguru » Thu Mar 01, 2018 1:07 am

I have a new unchambered 8 twist 308 barrel for sale here if you need it, i decided to go with a 9 twist for berger 230s.

https://www.sierrabullets.com/store/pro ... 30-gr-HPBT
This bullet requires a barrel twist rate of 1x8” or faster.
This bullet was introduced in January 2018.
Dia. (inches) Weight (grains) Sectional Density Ballistic Coefficients and Velocity Ranges
0.308 230 .376 .800 @1880 fps and above
.780 between 1600 and 1880 fps
.740 @ 1600 and below

AlexE
Posts: 32
Joined: Fri Feb 16, 2018 9:18 am

Re: New Sierra 230gr SMK

#5 Postby AlexE » Thu Mar 01, 2018 6:13 am

27 inches is a little short for my liking thanks Macguru.

If I could find a length for the bullet I'd see how the 230 smk looks with a 9 twist at magnum speeds using the Miller stability calculator. I'm hoping they will be ok.

macguru
Posts: 1227
Joined: Wed Aug 05, 2009 9:49 am

Re: New Sierra 230gr SMK

#6 Postby macguru » Thu Mar 01, 2018 7:57 am

Yes thats why I bought the bartlein 31" 9 twist, for my project. I figure the one i am selling is more suited to a whisper or blackout build, but if no-one buys it i may use it in my "tactical" 308W with juggernauts, although they work fine in a 10 twist.

Bigtravoz
Posts: 95
Joined: Sat Apr 22, 2017 7:43 pm

Re: New Sierra 230gr SMK

#7 Postby Bigtravoz » Tue Mar 06, 2018 6:20 pm

Saw 240 grain smk 30 cal on Brownells Australia, might be a mistake?

Bigtravoz
Posts: 95
Joined: Sat Apr 22, 2017 7:43 pm

Re: New Sierra 230gr SMK

#8 Postby Bigtravoz » Tue Mar 06, 2018 6:23 pm


macguru
Posts: 1227
Joined: Wed Aug 05, 2009 9:49 am

Re: New Sierra 230gr SMK

#9 Postby macguru » Tue Mar 06, 2018 8:09 pm

Thats expensive shooting $1.50 per pill

AlexE
Posts: 32
Joined: Fri Feb 16, 2018 9:18 am

Re: New Sierra 230gr SMK

#10 Postby AlexE » Tue Mar 06, 2018 8:36 pm

macguru wrote:Thats expensive shooting $1.50 per pill

It surely is. I emailed Brownells and asked them to add the product to their website hoping that their pricing might be a little more competitive than other places (as an aside, anything that is on the Brownells US site that isn't on the Australian one can be added almost straight away by emailing then).

For that sort of dollars, I'll shoot something else.

In the states they're 34 USD per 50. Same product here approx 58 USD per 50.

I don't know who in the supply chain is making the money, but their business model is obviously a low volume one!

Tim L
Posts: 298
Joined: Mon May 19, 2014 7:11 pm
Location: Townsville

Re: New Sierra 230gr SMK

#11 Postby Tim L » Wed Mar 14, 2018 12:58 pm

AlexE wrote:
macguru wrote:Thats expensive shooting $1.50 per pill

It surely is. I emailed Brownells and asked them to add the product to their website hoping that their pricing might be a little more competitive than other places (as an aside, anything that is on the Brownells US site that isn't on the Australian one can be added almost straight away by emailing then).

For that sort of dollars, I'll shoot something else.

In the states they're 34 USD per 50. Same product here approx 58 USD per 50.

I don't know who in the supply chain is making the money, but their business model is obviously a low volume one!

Yeah! I looked at Sierras last year. Not sure who's making the money but i was told they're distributed by OSA here.
I bought Nosler RDFs and a CCs instead.


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