30 Nosler velocity vs. Freebore questions

[Maverick021485]

Maverick021485

New member

I've done the best research I can about the 30 Nolser and which reamer to use for the Berger 215s. Consensus is a .200"-.205" reamer to hit the 3100 node. So here's what I have and what my questions are. Being as the SAAMI reamer has .110" fb, would I gain anything at this point by throating the chamber another .090"?

Rifle is a Weatherby Mk V, 27" Bartlein #3 1-8 twist, SAAMI chamber reamer was used.

Load data is ADG brass, F215, H1000 81.5gr (not compressed at all) 214gr Hammer Hunter, COAL 3.592", 3163 fps. This is just below max pressure without showing and signs of pressure.

 

[MagnumManiac]

If you are above or below the standard 26" barrel length, how are you going to stay/find this 3100fps node?
I have never designed, chose a barrel length because of a node.

You could get a throating reamer and advance the throat until you find something worthwhile, or you could just run it in giving you .200" freebore and work with that.
Personally, all my own reamers in 30 cal run .240" for 210/215/230's in a pinch. All will work somewhere in that length without worrying about a particular node, which I do not believe occurs across all barrel lengths anyway.

Cheers.