I cannot pan lube as I must use the Lyman lube sizer to seat/crimp the GCs and so they will automatically be sized; I might as well lube them at the same time. I tried to bell a .223 case so it will accept an unsized gas check; I attempted to seat the bullet that way; it wasn't pretty.
.223 Remington with the Lyman 225646
- Thread starter Wallyl
- Start date
Ian
Notorious member
Like I said originally. The fit points of those two bullets are completely different. A seating depth adjustment might help, or it might not if the "bore" diameter at the rifling origin is worn out to something like .222" where the .219" nose parks. The -646 designs (.30 caliber one as well) do best with the nose being a good, snug fit at the front of the leade but the tapered part backed off the ball seat .010" to .020" so it has a little bit of wiggle room and gets a little bit of a head start at engraving. It doesn't take much room for that bullet to get moving and too much of a good thing isn't good, but jamming it tight might not work so well either for the -646.
The other point of fit that Lyman and just about everyone overlooks is the front band to the throat's freebore fit. For this you want a scuff fit and I and many others have found is THE determining factor for bullet sizing die selection. Guessing on your sizing at .224" because "Lyman said" or .225" because "Joe Brennan said" or any other size because anyone else said is meaningless if your rifle's throat entrance is .2265". Note what Spindrift said about IMPROVEMENT when he went up in bullet size in his rifle, that is the sort of info to mull over even though it may or may not help you much if your rifle's freebore diameter is .224".
So very true. So I will test out some loads with the bullets loaded long-----most of the bullet will be outside the case neck. I am hoping to be pleasantly surprised. If I fail I will see about trading off the mold.
Earlier this year I acquired a new RCBS .30 Cal 165 SIL-GC mold on a trade for a 311672. Some guy bought it, never used it, & wanted to try the Lyman. I tried it in my 700 .308 Win...it grouped poorly. Seems the bore riding nose was a tad too small. I almost traded it off---but I decided to "Beagle" it...the results were dramatic and delightful. I was getting 2.5" ~ 3"+ groups at 200 yards with it--that's in my .308 & a 700 .30-06! Taught me a lesson...find out what others have done and try their methods.
Earlier this year I acquired a new RCBS .30 Cal 165 SIL-GC mold on a trade for a 311672. Some guy bought it, never used it, & wanted to try the Lyman. I tried it in my 700 .308 Win...it grouped poorly. Seems the bore riding nose was a tad too small. I almost traded it off---but I decided to "Beagle" it...the results were dramatic and delightful. I was getting 2.5" ~ 3"+ groups at 200 yards with it--that's in my .308 & a 700 .30-06! Taught me a lesson...find out what others have done and try their methods.
