40-90BN and paper patch

[Kurt]

Michael.

I will put my experience about the Orville type chamber.
I do not use Orville's chamber for match work but I do have one rifle with one and it shoots well.
Most of my rifles have chambers I cloned from Chamber casts made from originals, Sharps and Remingtons. The Original Sharps chambers I was able to get a cast from had much flatter throats than Orville's 7 degree. Dave at PT&G measured them at 3 degrees but I told him when I sent my print in to have a .45-2.4 reamer ground that I want the 5 degree/1.5 deg. compound and even this makes it a very long throat.
I had CPA build this rifle and I chose a Douglas premium 30" barrel and had it build for the silhouette matches and long range.
When I got this rifle I had a short time testing it on the 200 yard range and I found out right quick that this rifle was going to do well. I got word that there was going to be a Midrange shoot at Wisconsin Rapids for getting ready for a Lodi warm up so I packed my gear and got my Wife out of bed at 3:30 AM and made the trip up to shoot Arnies match just to see if this rifle will hold up at a longer range. I took 10 shots from the 600 yard line and I don't remember if Jim was pulling my target or not but I just shot for a group to see what the rifle and my best load to date will do. Carol said bring it down 1.5 minutes I said no I want a ten shot group on paper. After the 10 shots fired I said OK I will drop it 1 1/2 and I took three more sots but time ran out to get more in. But when I went to the pit those three shots were what I call a clover leaf, they cut and that group above I could almost cover with my hand with one at the thumb.
I used this rifle starting my way on the silhouette range I just started to shoot at Alma Mich. and with this rifle I shot my way into the AAA by the middle of the second season. It also put me inside the top 14 at the Q and 3rd at the MT 1000.
With this long post I just wanted to let you know that a long funnel type throat is capable of shooting and shooting quiet we.
The .45-90 is more than enough rifle for the iron critter matches so I had a mother CPA build that has a 4/2 degree compound throat in it and I will find out next season it it will shoot