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#13429058 - 01/07/19 Looking for a Subsonic .25-20 Winchester 87 Grain Cast Bullet Load  
Joined: Feb 2005
Posts: 409
Remington40x Offline
Campfire Regular
Remington40x  Offline
Campfire Regular

Joined: Feb 2005
Posts: 409
Southeastern PA
I am shooting an ASSRA indoor match shortly and using a .25-20 Winchester using cast bullets (87 grain). The range requires the centerfire loads to be "squib", which it defines as subsonic. The slowest 87 grain load I've managed to find is 3.6 grains of Red Dot, from the Lyman Cast Bullet Loading Handbook. The indication is that the load is still in the 1150 fps range, which is supersonic, in a 24 inch barrel. My single shot has a 26 inch barrel, which probably adds 25-30 fps to the velocity.

I've been reloading for a while, but have never had much of a sense of adventure doing so and have a healthy aversion to loads not reflected in a lab tested manual. In this case, the issue is more of too little than too much, but I've no interest in finding a bullet lodged in the barrel for lack of sufficient powder.

Can anyone recommend a subsonic load for this cartridge that's been lab tested and published?

Thanks.

300 BP

#13430056 - 01/07/19 Re: Looking for a Subsonic .25-20 Winchester 87 Grain Cast Bullet Load [Re: Remington40x]  
Joined: Dec 2007
Posts: 6,804
Prwlr Offline
Campfire Tracker
Prwlr  Offline
Campfire Tracker

Joined: Dec 2007
Posts: 6,804
Colorado Springs, CO
Try posting in the rifle reloading forum


Ed

A person who asks a question is a fool for 5 minutes the person who never asks is a fool forever.
#13431577 - 01/07/19 Re: Looking for a Subsonic .25-20 Winchester 87 Grain Cast Bullet Load [Re: Remington40x]  
Joined: Apr 2017
Posts: 1,509
woodmaster81 Offline
Campfire Ranger
woodmaster81  Offline
Campfire Ranger

Joined: Apr 2017
Posts: 1,509
Try Trail Boss. A starting load might very well be what you are looking for.

Look on the Hodgdon website for info on how to develop a load using Trail Boss. It is pretty simple.

#13436295 - 01/09/19 Re: Looking for a Subsonic .25-20 Winchester 87 Grain Cast Bullet Load [Re: Remington40x]  
Joined: Mar 2018
Posts: 61
Jagman64 Offline
Member
Jagman64  Offline
Member

Joined: Mar 2018
Posts: 61
There is a fella on the MO forum that has posted tons of load data for the 25-20, you may find something there. With my 92 Win. I had keyholing at the lower velocities,but may just be my rifle.


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