ER Shaw 7x57 Group buy barrel

[montana bob]

I installed my 7x57 ER Shaw barrel that I got from the group buy. Worked on a couple loads and am glad to say how happy I am with it. Just shot a 5 shot .333 group.

[nuance231]

What twist for what bullet did you go with? I'm thinking about 7x57 with 150/160 gr or so bullets.

[JackinSD]

It's always nice when you get a shooter.

[montana bob]

I believe it's a 9 1/2 twist and I'm shooting 150 grain SMK. Loading Win brass, Wolf large rifle primers, 40 gr of IMR 4064, 150 gr SMK seated @ 3.025 OAL. I'm not showing any signs of pressure as of now. I'll start gradually working my way up and see what it does to accuracy.

[teebirdhyzer]

Nice shooting! Some of these Shaw barrels seem to do very good. Now if I can get my hands on the 6.5 Creedmoor I have coming my way from the group buy.

[nuance231]

Does the throat seem long enough to avoid seating longer bullets down into the body of the case?? I am contemplating an ER Shaw barrel in 7x57 and plan on going the traditional heavy long bullet route.

[montana bob]

When I get a little time I'll try try to leave one out long and see. I only have a box of 150's to try with. Was the traditional a round nose bullet?

[nuance231]

If you have the time that would be great.

According to Wikipedia... the original bullet was a 173gr round nose. At one time I used a no longer made Sierra 170gr RN in a Ruger77 with good results on deer and a moose. If you haven't seen this site the writer has some interesting opinions; http://www.ballisticstudies.com/Knowledge+Base/7x57.html

The link may not work as I don't know what I'm doing on a Mac

edited to add - Hey... it worked

[montana bob]

from one mac to another

[montana bob]

I loaded some cartridges last night and left a bullet out long and pushed it up into the lands and then used a comparator to measure the difference between my normal load that the the manual suggests. my normal load with comparator measured 2.495 the bullet I pushed into the lands measured 2.598. a difference of .103 Hope that helps. My overall length for normal load is 3.025

If you have the time that would be great.

According to Wikipedia... the original bullet was a 173gr round nose. At one time I used a no longer made Sierra 170gr RN in a Ruger77 with good results on deer and a moose. If you haven't seen this site the writer has some interesting opinions; http://www.ballisticstudies.com/Knowledge+Base/7x57.html

The link may not work as I don't know what I'm doing on a Mac

edited to add - Hey... it worked

[nuance231]

Thanks for the info. Truthfully I don't know if that makes for a long throat or not. If anyone can educate???

When I retrieve the aforementioned Ruger 77, now residing as a safe queen at a friends, I'll measure that rifles throat length for comparison.