On Holsters; I have heard of the Quiethide Holsters. I have never seen one but they look like they are well made and thought out. I am not sure if a 15" Encore will fit in the one I suggested. My Super 14 fills it up. I think Blackhawk makes a holster that will fit the encore also.
On holding the pistol: I have used several methods.
1. I have a bar on my climbing stand and this is what I use the most. I rest the pistol on the bar and put my non firing hand under the forearm. The guns forearm is resting in the V made by my Thumb and forefinger. I don't hold the T/C like other pistols two handed. If I do with the hard recoiling calibers I get a busted knuckle
2. When on the ground I use a Bi-Pod I made. Or I have a walking stick that has a fork at the top and is about shoulder high. Same thing I rest the forearm in the fork. Non firing hand supports the gun under the forearm.,,,,,bam
3. With my shorter 10" barrels that don't recoil so much like 22lr, 22 hornet and 32-20, I can shoot them like I would any normal gun or rest them on a tree limb to shoot.
4. I have also laid back and rested the gun between my knees to shoot. But this was out west and at varmints.
With a Encore and a 15" barrel you will need a rest. That is a LOT of gun. My super 14 is big, almost too big. With the 14" 30-30 barrel it is a stand hunting gun. I can stalk with my 10" 45-70 or a Revolver much more easy. I have 1.5X-4x scope on the 45-70 and when hunting it is on 1.5x.
Last on the scopes. Last night I went and looked at my barrels and hunting rigs, here is what I have on them:
Contender Barrels
30-30 14"- 1.5-4X Burris
223AI 14"- 2-7x Burris
22lr 10" 2x- Leuplod
22 Hornet 10"- 3x burris
32-20 10"- Iron Target sights
45-70 10"- 1.5-4X burris
Hunting Revolvers:
629 6.5"- 30MM Aim Point This is the swamp gun
Redhawk 44M 7.5"- 2x Leupold
657 6" Iron sights
Redhawk 44M 5.5"- Iron sights
I sometimes hut hogs with my 1911 too. Its a Colt Series 70 in 45 acp. I have been wanting to get a 460 Rowland barrel set up for it. I think this would be a fine 50yd and in gun.
I was thinking on this last night;
To get an idea of what a pistol scope is like to shoot with; Get a piece of 1" dia PVC pipe 5-6" long. Hold it at arms length and sight in on stuff. That is a 0x scope. You will get the idea quick.