The post whore thread.

[TheBelly]

I got some answers about my rifle reloads problem tonight and I FINALLY freaking believe it!! Started a write up on it, but all it took was some very expensive and specialized tools that I didn't realize my observatory had!

well? what was it?

[buffalobo]

well? what was it?

From all the analysis and calculations.

He didn't hold his mouth quite right.

Lobbed from my electronic ball and chain.

[TheBelly]

ugh.. I'm too tired to get the joke.

[BuffCyclist]

Yay! Glad you got the the bottom of it! I look forward to reading your write up. In the morning, of course.

well? what was it?

Ya just couldn't take the suspense, could ya?!

Okay, so using some small hole gages and a pair of very nice micrometers, I was able to determine that the primer pockets on the LC LR 07 brass was on the maximum end of specs, and the WLR primers were on the minimum end of specs. Without actually averaging (no time yet, just recorded lots of data), here's the results:

All of this data was taken from measuring between 10-20 cases/primers, and recording the measurement 3 times, the writing down the average of those 3 for all cases/primers. The same measurements between cases were VERY consistent.

LR Primers
Min = 0.2105"
Max = 0.2130"

LR Primer Pockets
Min = 0.2085"
Max = 0.2100"

CCI BR2 Primers - 0.2111" (middle of spec)
WLR Primers - 0.2103 (lower end of spec)

LC LR 04 Primer Pockets - 0.2094" (in spec)
LC LR 07 Primer Pockets - 0.2106" (above spec)
LC LR 08 Primer Pockets - 0.2097" (in spec)
LC LR 10 Primer Pockets - 0.2100" (max spec)
LC LR 11 Primer Pockets - 0.2095" (in spec)
R-P Primer Pockets - 0.2098" (in spec)
Black Hills Primer Pockets - 0.2100" (max spec)

I STILL don't have the Lapua brass, not happy with SouthwestAmmunition for that, they were in-stock when I ordered, then they claimed they must have sold out after I ordered even though the page still hasn't changed like some other items that say "Requires an additional 1-2 weeks processing time)". Anyways, I don't have that brass in yet so I can't measure the primer pockets to see what they are.

What I think happened is that the LC LR 07 primer pockets were a few ten thousandths (as in, as much as 0.0003"-0.0005" larger) larger than the primers, which caused less friction to hold the primer in place, so the primers were easier to unseat and blow out. When I get time, I'll be pulling the remaining 51rds, weighing charges to ensure that wasn't a contributing factor too but will then just load up the Lapua brass with a smaller range of powder charge and retest.

Oh and my Timney Trigger arrives today to fix the XMark Pro Trigger Recall problem. So that should be fun.

[waxthis]

Missed me didn't you..

[BuffCyclist]

Missed me huh..

Oh god, not the pictures of tacos again!

[Ranger353]

Oh god, not the pictures of tacos again!

Makes me hungry! Stop it!

[hghclsswhitetrsh]

I'm at Santiago's right now. Wife ordered Indian taco beef only smothered half and half. I ordered a Mexican hamburger.

[Ranger353]

I hate Friday afternoons at work, the clock moves soooooo slooooow!

[waxthis]

Tick Tock Tick Tock.........................................