Hi All Knowing People
I have a question I've wondered about about seating depth for my 44, first I shoot paper only at velocities of less that <1000fps...normally 925fps is about right for me and a 240-255 lead SWC for my Ananacoda using about 7 g of Green Dot.
In the picture I have included are two sest of cartridges, the shorter is Lyman 429421 bullet I cast, its on the left in the nickel cases, its seated to 1.610 COL which is a typical 44 COL. But on the right in the brass cases I have my newer RCBS 250 SWC seated to 1.690 COL seated right at the crimp grove. As you can see I use a good taper crimp(please no discussions on taper vs roll crimp).
So to the question which seating depth is correct?? Obivously with my Anacoda I have no worries with the longer round chambering the cylinder is quite long and there is no interferace with cylinder rotating.
The Lyman manual says with the 429421 to go out to 1.710 COL which is too long becasue you are slightly past the crimp grove. All other manual show seating depth for the 44 to be 1.600-1.610??
So wouldnt it be better to the get the bullet closer to the the rifling?? I'm really leaning toward 1.690-1.700 for the Keith style SWC.
Case volume and pressure difference are negiable since the difference in the seating depths only changes the case volume by about 7%(for .0600), so there wont be much difference in fps. I may drop 20 fps max by seating the bullet further out.
So what COL do you guys use for your 44s???
below the bullets are the 429421 on the left and RCBS 250 SWC Keith on the right...almost the same Lyman is .777 long and the RCBS is .800.