Well, every now and then, we all take things for granted. I learned this lesson the hard way last year. The year started out fine but in general, progressed badly, shooting worse as the year went along, I discovered that I had a front base coming loose (actual coming off) at the nationals and after tightening, things went better. I didn't shoot anymore after the nationals because I just really didn't feel like it after the humiliation of taking so long to figure such a simple problem out (the darn screws were even JB welded into the action holes so I thought...that could never be the problem). So after I put everything away, I thought to myself, this isn't going to happen again so I said to myself, I'm going to check everything from my reloading gear to rifles this spring before I start shooting. Well, of course, I kept putting this off but this last weekend and Monday, as I was laying in bed sick, I thought, if I can just get over this a little, I'm going to start checking things. Well, about seven o'clock in the evening, I went out to the garage and brought my loading box in. I set it up by the bed and the first thing I did was screw a bottle of my vintage 8208 on the measurer and mounted it. Now, I wasn't checking out my measurer yet, but my wife knows that if I passed out from being sick, a couple of dumps of that powder on the carpet would bring me around a lot quicker than smelling sauce. Anyway, I got out a good set of slight used cases. I checked the runout on these fired cases, no surprises...the needle didn't move on the outside or inside of neck. Then I sized some cases with both my primary FL dies... same result, so I am quite happy now and am starting to think I am wasting my time but since the only other thing I had going, was going to the Head to check out what I had ate earlier, I drove on. Now, I have two primary seating dies also and six heads/stems to go with them. I also pulled out the two primary bullets I currently use (68gr BT Hottenstein's and 66gr FB 9ogive Knights). Now this is where things started to get interesting. I seated each bullet, three different times in three different cases with each die and each head in each die. So basically, I seated a lot of bullets. One thing that I found was that the head/stems read the same runout no matter which bullet or die body was used. That was the good news. The bad news was some of the readings.
Head/Stem Runout
1 .0015
2 .0015
3 .002
4 .0025
5 .0005 max
6 .0005 max
So what I found out was that four of the head/stem combinations I have been using are unacceptable (at least to me). One question might be...does .002 runout or so make a difference at the target. Well, I don't know but this is one area where it definetly can't hurt to have less.
Know what else am I going to check. Well, this first run through was a baseline. Now, I've got a second press to check with a known good die and shellholder (both my BR presses are Harrell's Combos) and cases. Then if all checks well for sizing, I'm going to start checking the other five ppc shellholders to see if any of them induce runout in the sizing process. After that, I will be checking my measurers, repairing/checking flags and stands, and then checking my rests and bags. Also, the new rifles and my action for my railgun (first year with a rail) will be in this week (so I'm told). Gotta go over them but I'm not anticipating a problem since I had my gunsmith go over everything and the new barrels are in the safe ready to go and at this point, my gunsmith is about the only thing/person I trust.
The morale of the story, these seater head/stems are ones I have used for the last couple of years and hadn't checked them. I used to check everything a few years ago to start the season off but had gotten complacent about it, thinking that since I hadn't ever had a problem with a new item, that I wouldn't. Goes back to the old saying "New just means unproven".
Check it all.
Hovis
Head/Stem Runout
1 .0015
2 .0015
3 .002
4 .0025
5 .0005 max
6 .0005 max
So what I found out was that four of the head/stem combinations I have been using are unacceptable (at least to me). One question might be...does .002 runout or so make a difference at the target. Well, I don't know but this is one area where it definetly can't hurt to have less.
Know what else am I going to check. Well, this first run through was a baseline. Now, I've got a second press to check with a known good die and shellholder (both my BR presses are Harrell's Combos) and cases. Then if all checks well for sizing, I'm going to start checking the other five ppc shellholders to see if any of them induce runout in the sizing process. After that, I will be checking my measurers, repairing/checking flags and stands, and then checking my rests and bags. Also, the new rifles and my action for my railgun (first year with a rail) will be in this week (so I'm told). Gotta go over them but I'm not anticipating a problem since I had my gunsmith go over everything and the new barrels are in the safe ready to go and at this point, my gunsmith is about the only thing/person I trust.
The morale of the story, these seater head/stems are ones I have used for the last couple of years and hadn't checked them. I used to check everything a few years ago to start the season off but had gotten complacent about it, thinking that since I hadn't ever had a problem with a new item, that I wouldn't. Goes back to the old saying "New just means unproven".
Check it all.
Hovis