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.338 throat?

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Unread 10-07-2010, 10:28 PM
Junior Member
Join Date: Mar 2008
Posts: 18
.338 throat?

I am about to chamber my first 338edge.
The reamer I have has too short of a throat I'm thinking for the 300SMKs, which I would like to shoot. I have a throating reamer on the way. If I throat it for the 300 SMK how well have these shot the shorter hunting bullets? What bullets have you guys been using for elk, deer?

Hears the print of the reamer I have. It looks like the throat will have to be .100" longer thereabouts, so I can keep the SMK out of the doughnut.
Any help would be greatly appreciated.

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Unread 10-08-2010, 10:59 AM
Bronze Member
Join Date: Dec 2006
Location: Alberta,Canada
Posts: 57
Re: .338 throat?

my coal with the bullet touching is 3.900"(300smk)
i run them around 3.700 for mag clearance.
i load my 250 NAB to fit the mag and i believe they will shoot sub .5 (with the right nut behind the trigger)at 200M,,my best is in the 9`s.
this is as far as i have taken the NAB...i dont know if they will hold moa out further with a 9.4 twist.
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Unread 10-08-2010, 01:25 PM
Junior Member
Join Date: Mar 2008
Posts: 18
Re: .338 throat?

OK thanks.
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Unread 10-10-2010, 10:07 AM
Gold Member
Join Date: Apr 2007
Location: ALASKA
Posts: 504
Re: .338 throat?


My reamer print was made off a dummy round with a 300 SMK that measured 3.950 from case head to tip of the bullet. This placed the bullet boat tail/bearing surface junction just north of the case shoulder/neck junction.

My print shows a "lead" dimension of 3.129 (vs 3.020 on yours) and a "throat" dimension of 3.386 (vs 3.277).

All other dimensions between our two prints are identical, except my neck diameter is an even .371.

Hope this helps.
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