Originally Posted by
geargnasher
I don't know about what you're doing, Joe, but 45 2.1 keeps pointing out how he knows Larry's neck clearances with his MexSwede are too great to get any kind of accuracy. We ARE splitting hairs here, because, as PatI pointedout, this IS benchrest-quality shooting we're talking about here, and I for one can't figure out how you make "bug holes" at 100 yards when you don't seem to even bother to measure your neck clearance. What are your neck bushing measurements with that .298-ish chamber and .268" boolits? what size is your expander plug? Do you check your necks after a few firings to see if brass is flowing from the body and shoulder to thicken the bases a bit? Do you get stretch rings (like case head stretch rings) on or near the base of the necks?
I can't understand how you just slap it together and get tiny groups and warp speed and 45 2.1 demands fit that rivals swiss watchmakers, saying that's why Larry's first test groups were so (typically for that velocity) bad when Larry's fit was in some cases better than yours.
From my limited experience competing with jacketed, I KNOW that every part of the case/chamber/boolit/barrel fit must be carefully made to within VERY close tolerances, always to four decimal places, or you won't get far. I had someone else, with all the equipment I couldn't afford at the time, prep my cases for me to fit my exact gun.
Problem with the Swede is there are things to fit that are beyond the range of most available components, and things like a tapered neck and oversized leade exacerbate the situation.
Gear