All great info from your experiance thank you
A friend, who builds rifles, built a very accurate ( at 100 yards) .240 Ruger, custom barrel, the works. Although he was getting impressive groups, he noticed that with the best powder, TAC, he was giving 50 FPS variation in velocities. (all of this with his favorite 32 grain. plastic tipped bullets) He rechambered the barrel .085 shorter, and cut down his dies. The accuracy and velocity are virtually identical, and his ES is in the high single digits. As one reaches out farther, this begins to matter more and more. Have you considered the .20 practical, which is nothing more than a necked down .223? That is the case that he is using for his shortened .204.
All great info from your experience thank you. That is why I asked the question many knowledgeable people and experiences.
The majority 90% of the shooting will be at night, fall to late winter in zero + or _ conditions.
The Any projectile that is too heavy will tear the pelts and or travel straight through that is why we used the 25grns in the Remington 17cal years ago. Like I said most shots I hope will be head shots. The early 1980's was the last time I shot for pelts for the fur trade in large numbers.
I have heard some good things about the 204's and being that a 32grn was available and they can get out there and obtain ½ or less groups at 200 plus it was worth a look and to get all of your advice.
Some braggers in the past have commented that under a spot light they have head shot this and that out at 400m - 500m. That is a long way in good day light, let alone at night with a good spotlight and most do not know their real distances.
So that is why I said out to 400m, I have nailed many out that far but not often, if you know what I mean. I have missed many head shots and hit the neck or missed all together going for the head shot.
Over a winter out at those long shots I nailed 10 or 20 but that was 30 years ago and better eyes.
This is all an exercise to see if the numbers stack up to shoot 1,000 plus pelts a winter,
a. The Rifle - combination,
b. The scope power and ?illuminated or std,
c. Ammo (powder, cases, primers projectiles)
d. vehicle, fuel and running costs.
e. and then the access to properties to shoot large numbers.
I have a beautiful BDL Remington trued and accurate 223AcImp 1:8 twist that shoots 1/2'' at 100 to 200. I have not done much testing just shot the barrel in as I fire formed some cases and it was doing just under 1/2 at 100 and the group at 200 was just a whisker better, using light loads 45grn Hornady projectiles, so who know what it will do, when some good load combos are tested.
I do thank you all and keep it coming it is all learning and great info from you all. Regards Phill