linoww
posted this
19 December 2008
Dollar Bill wrote:
Has anyone found that converting a mold to a hollow point has made it more accurate?
Bill
Three of my HP conversions (SAECO#307,225438 and 311410)i shoot the most seem to be more accurate.At least i have shot my smallest groups with them after the conversions.I have heard it said it can help get the center of gravity more central to the bullets rotation and thats why they sometimes shoot better.I am not an engineer so don't quote me on that one.
I shoot the #307(.30 cal 175 FP) bullet as a hunting round from WW and at 1950 FPS it shoots into 1.5” for a junker sporterized 1903.it was a 2” bullet before HP'ing.I have a FP(non HP) pin for the #307and intend to cast some with the HP and some without to really see it is true.It would be fair as the bullets would be coming from the same cavity and casting session.
My Lyman 225438 is a 2 cavity and the HP cavity definitely shoots better,but possibly the cavity I HP'ed may have shot better before if i had just segregated the bullets?The non HP side shoots 2-3.” and the HP side will do 1.25 to 2.25” Loaded in a 22-250 @ 2100 fps.
The Lyman 311410 single cavity i have a monster HP in also shoots noticeably better than it did before.It never shot much under 2-1/2” at 100 and now it shoots 1"-1.5” for 5 at 100 and sometimes 10 shot groups run 2".This is with a light load of 7.5 of bullseye.
And i did forget how much i like the SAECO #315 Dan recommended.I would put that on the top of the list.Especially in a 4 cavity!!!
George
"if it was easy we'd let women do it" don't tell my wife I said that!