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Experimenting with the Hornady 190gr Sub-x and very light loads of Trailboss trying to find a low velocity low noise load. Getting acceptable accuracy but....every 5th or 6th shot the bullet is keyholing at 50yds.
Need more velocity.?
Anyone know twistrate of Savage 219?

More velocity or shorter bullet.

Bruce

Any idea if theres a velocity threshold and if so what it might be?

With only about 20% keyholing, you are getting close.

Is it a light load of Trail Boss, or a Trail Boss light load, which may be near max for Trail Boss? Hodgdon shows data only for a 160gr lead bullet.

https://shop.hodgdon.com/hodgdon/hodgdon-trail-boss

https://www.24hourcampfire.com/ubbthreads/ubbthreads.php/topics/2691486/1/Trail_Boss_30_30_loads

https://levergunscommunity.org/viewtopic.php?t=4987

https://castboolits.gunloads.com/showthread.php?144131-30-30-Trailboss

Bruce

thanks for the links,
8grs,
havent put them across a chrono yet but looking like im a couple grains lite

Factory .30-30 barrel or aftermarket/rebore? You need to determine your twist rate to be sure of your bullet/powder needs. It should be 1-12", but knowing Savages it could be a little slower or a little faster.

I've had good luck with .30-30's when cooking up "cat sneeze" loads, but it was always with much lighter bullets, cast lead of 130 and 150 grains, and Red Dot and Bullseye powder. I'm suspicious that your heavy subsonic bullet may need more twist, or perhaps a few hundred more fps which would abrogate your quiet goal.

My go-to .30-30 load is with a 190 grain cast bullet but I'm driving them with 28gr. 3031 for 2000fps out of a 24" 1-12" barrel (Model 54 Winchester), with perfect accuracy and (loud) authority.

Anecdotal cautionary tale: the only time I stuck a bullet in a barrel was when messing around shooting jacketed stuff at subsonic velocities. It came to a screeching halt halfway down the bore and took the services of a very skilled gunsmith to lathe bore the lead core out of the jacket (and didn't touch the rifling) leaving the jacket to be pushed out with a cleaning rod.

Try asking your question on www.savagesingleshots.com. The guy that runs that website really did write the book on 219/220s. He'll sell you a copy of the second edition if you want one!