Inthebeech
New Member
I have everything dialed in to get excellent accuracy and zero leading with my S&W Model 14. For grins I would like to try out some 45-45-10 tumble lube. Here's my dilemma. Throats measure .3570-.3578 (because all I have are zz minus pins so I can't provide more accurate data) and I've been sizing with a die that leaves my BHN 8 bullets (Lyman 358212) at .3580-.3582. With a groove of .356 this all gives 2 1/4 inch fifty yard Ransom rest groups. Now, isn't this system of dimensions just going to result in the tumble lube on the driving bands getting wiped off in the throat which is an interference fit? If true, and I don't want to open up the throats (I'd sooner leave well enough alone and not change anything), would going down in sized diameter be the first thing to do if I wanted to continue to explore tumble lube? It would be a thin line as I wouldn't want to go below throat diameter more than a couple of tenths I think. Thanks for the help.