Anybody have one of those calculators or software that will estimate velocity?

I'm trying to get an idea how fast a 350 rem mag is in a 15" pistol barrel..... the load is 56 grains of Varget, win large rifle primer, 225 grain Nosler BT, OAL 3.1"

56 grains is as high as I can go and still get the case out of the chamber without using a cleaning rod as a ram rod.......I don't believe this is a pressure problem......it's an extraction problem!

Thanks, Mark

Just as a comparison...my .338JDJ#2 shoots a 225gr Hornady (47.3gr RL-15) at 2175fps from a 14" barrel. RL-15 is comparable for fps with Varget in this set up. You can draw any conclusions from this that you want but I'd say you may be around 2250-2300.

Mark,
According to Quick Load, you should be around 2353fps.

Bob