25 ACP Conversion Question

[Stress]

I am interested in converting my Remington Genesis to 25 ACP ignition. My main reason is to reduce the amount of blow back into the action. The best load I have for the rifle is 130 grains of loose triple seven with a 250 grain TC Shockwave bullet. This is a max load for my rifle. By reducing the blowback I will be increasing the working pressure of the load. My question is how do I determine a new max load for the rifle? Do I need to be concerned with this or should I just stay with the max load for the 209 breech plug.
Thank you,
Stress

[Semisane]

I know of no reason you can't shoot the same maximum loads with the 25ACP that you do with 209's.  I do in my converted Mustang.

[Redhawk1]

Stress, you are 10 gr. over the max load. 150 gr. of triple 7 pellets equals 120 gr. of loose triple seven by volume.
Triple Seven is a high energy product designed to provide the muzzleloading hunter with higher velocities when used in the same VOLUME as blackpowder. To duplicate a blackpowder load velocity using Triple Seven, you must decrease the powder charge by 15%.
http://www.hodgdon.com/loading.html

You can still use the 25 ACP with a small rifle primer and it will ignite the powder just fine. I did not have one problem using 120gr. of loose triple seven with the 25 ACP set up.

[Stress]

Redhawk,
The Remington manual states that I can use up to 130 grains of loose triple seven powder. If I decrease a 150 grain load by 15%, I get 127.5 grains. Are you thinking about the Blackhorn powder for the 120 grains to equal 150 grains of black powder? I have decided to reduce the charge about 20% and work up in 5 grain increments until I get a good consistant group. I hope the load will be well below what I have to use now to get a tight group. I will not work on this until after muzzleloader season and I will post the results if anyone is interested.
Thank you,
Stress

[Redhawk1]

Redhawk,
The Remington manual states that I can use up to 130 grains of loose triple seven powder. If I decrease a 150 grain load by 15%, I get 127.5 grains. Are you thinking about the Blackhorn powder for the 120 grains to equal 150 grains of black powder? I have decided to reduce the charge about 20% and work up in 5 grain increments until I get a good consistant group. I hope the load will be well below what I have to use now to get a tight group. I will not work on this until after muzzleloader season and I will post the results if anyone is interested.
Thank you,
Stress

If that is what your manual shows, then I was wrong. Sorry.