Author Topic: Rainy days and the blues (Read 319 times)

jhalcott · « **on:** March 26, 2005, 12:50:13 PM »

waiting for the rain to quit and not much else to do I grabbed my 6mm. It has started to throw fliers and I want to know why. Bore was clean,bedding and scope were tight.??Seated a 100 grain bullet 0.050 in a case and tried to chamber it. IT FIT!!! Dang ,the bullet as loaded was 3.100"long(almost)! Now it's either new barrel OR set back the old one.
What's the chance the loads already on hand will shoot in a set back?.While on this topic, I bought about 500 NEW 6mm cases. They look new,but while prepping them ,I found some as light as 164 grains and some over 187 grains. About 120 or so were 167 to 169 grains. The cases were not marked as seconds!

Kingfish · « **Reply #1 on:** March 28, 2005, 09:54:19 AM »

If you set your barrel back or get a new one, it would be fairly easy to seat your bullets a little deeper if you have to. You may still be a little off the rifling as a 6mm bullet doesn't have a lot of variance. I would seperate the brass you have bought into different groups by weight and use them by working up loads to see if each group shoots about the same.

Bill

bigjeepman · « **Reply #2 on:** March 28, 2005, 10:16:24 AM »

Not sure what kind of brass you purchased. I always size, tumble (to get the One Shot case lube completely off), and then trim new brass. I have found various lengths of brass in the same bag when I got it home. Is this accounting for at least part of the difference in weights?

jhalcott · « **Reply #3 on:** March 30, 2005, 06:26:00 AM »

Big,
I sized and trimmed it, made sure all primer pocket flash holes were on center. Then weighed them .Sorted into +/- 2 grains (167-169,170-172,etc.)This is R&P brass! I have never, Never gotten a lot with 20+ grain variation before. That's got to be about 10-12% different,

Oh BTW, groups were fired using brass of the same weight. Older brass on hand is MUCH closer in the weight variation,less than 10 grains total.