[kciH]

FA18CUB,
What I do to get around this exact same problem in my Bisley Blackhawk is to only partially resize the cases, it makes them last quite a bit longer. I only resize the portion of the case that actrually holds the bullet. This poses no problem for chambering in my pistol, but you could try a few this way in your rifle and you will likely have the same results. I also use this same technique for 38-40 brass that I use in a Buckeye Blackhawk that I like to shoot. The 38-40 brass lasts much longer this way. All you need to do adjust your decapping stem way down, which I'm not sure is possible with the Redding dies, and size only the portion of the case down to the cannelure that your WW cases likely have. Worst case, you could size as stated and use a universal decap die.

 

[kciH]

You will have some pretty warm loads if you want to get 1300 out of a 5.5" barrel. I know it can do more. The technique I mentioned will almost certainly work in your carbine and it will work in your Bisley. Keep in mind, as Jack mentioned, that good bullet pull and a good crimp will be mandatory with this round, whatever you decide to fire it in. If you have problems related to this, it will likely be with your expanding stem, not the resized case diameter. The good news is that you are using Redding dies, and if you have a problem, they will make it right. I have experienced this several times over the years, usually related to something out of the ordinary that I'm trying. I can't say enough about the quality and customer service of this company and it's products. Please let me know what velocities you're getting from both guns. I mainly shoot 300gr XTP-Mags out of my 7.5" Bisley with a healthy dose of 296 behind them. I haven't seen the need for the Partition, as I only use them for deer. I shot a big (175lb dressed)doe in Minnesota last week with that gun, and it just knocked it over. The expansion didn't seem to be extreme, but I'll never know because penetration was complete. I'm interested to see what velocities you get with the powder you're using, as well as if the SD is better than the 296.

 

[kciH]

1400 with a 265 is stompin load. I used to use some 300gr SSK design bullets in the 41 when I had access to a mould, I could get a little over 1300 in the 7.5" Bisley. Funny, they felt the same as the 1300 fps 300gr lead loads do in the 45 Bisley. Recoil is stiff, but manageble if you ride with it. I have a 4 5/8 and 6 1/2 in Blackhawks in .41 Mag, but I haven't put more than a 5-600 rounds through them. I got them when I thought ruger was going to stop making them, and the price was right. How was the recoil of the CorBon load with the Blackhawk grip frame?