R.O. spring

The spring in my Range Officer is not the factory spring.I don't know what its rating is.I've put a Clark base and a Ultra Dot on it,and it won't eject the fired brass very well.It will chamber a fresh round,but it does not lock tbe bolt back.The load is 205 gr. LSWC, mixed brass,R-P primer,4.6gr BE.So do I keep adding powder or put in a softer spring? What spring should I put in.              binski

I have a R.O. with very much the same configuration. In my case I use a 12 lb spring with 4.2 gr of BE.I have a very tight pistol and need the 12 to bring it back to battery every time. I need 4.2 of BE to bring the slide back to lock every time. Ideally I would try for 3.8 of BE with an 11lb spring. In any scenario I think you are loading to hot already. The most accurate load I have found was with 3.8gr. If you have a whole pile of bullets loaded up try something in the 13/14 lb and that should work for you until you can shoot them up. Springs are really pretty inexpensive and you can find the right combo by experimenting.

Len

I agree with what Len said.  Buy some springs--my load is 3.8gr BE under 200gr LSWC.

factory ships the RO's with a 16lb spring, 11-12 should be good for your load.

I've had good groups with 4.2 grs of BE also,just poor ejection.I looked on Alliants site and they list a 4.6gr load as max.Thats why I stopped there. From the replys I got,made me think I will get some lighter springs to try.I may be wrong about not having the factory spring still in pistol.All I had done was a trigger job and the smith changed the mainspring.                        Thanks    binski

3.8-3.9 sends a 200 to the x at 50, you just need a lighter spring

My Range Officer 45 runs just fine in stock condition.  After I shoot it some more I will know what to have Roddy do to it.  Right now Roddy has my HB gun he built and will convert it to another wad gun.  I still have M9 and GoldCupNM for HB.

I hope I can do more matches this summer than the past few years.

Jack H wrote:My Range Officer 45 runs just fine in stock condition.  After I shoot it some more I will know what to have Roddy do to it.  Right now Roddy has my HB gun he built and will convert it to another wad gun.  I still have M9 and GoldCupNM for HB.

I hope I can do more matches this summer than the past few years.

They will in stock form with open sights but not with a mount and dot mounted on the slide like the OP.