Hi.
I am working up a load for my 6.5" S&W 629.
I am using the Lee 310gr. boolit with GC run through a .430 sizer and cast to 318gr.
The boolits come out as .431 but my cylinder throats are just at hair over .430 so the boolits will make a pretty tight fit in the throats.
I think I am close to the max load using 18gr. VV N110 and an COL of 1.1654.
This gives 1200 fps but without any apparent pressure signs.
The accuracy is pretty good so the question is about pressure vs. the tight throats.
I use the rear cannelure and the boolits are just touching the throats without any "free flight" what so ever.
Is this a bad thing pressure wise?
Like when loading jacketed rifle bullets touching the lands will raise pressure, will this be the case here as well?
I do not think so but would like your opinions about this matter.