FF sizing eye opener
Oct 22, 2014 14:14:26 GMT -5
Post by rangeball on Oct 22, 2014 14:14:26 GMT -5
Since I have my rempac here at work with me with the plug out, I thought I'd push a couple of the 310 APBs I FF last fall through to gauge their loading resistance, as I didn't take notes and can't remember exactly.
When I sized them I put a line on the ogive to line up with the die, and ran them through 3 times. My bore definitely gives a different loading experience depending on alignment so I index and have my muzzle marked.
First one I had to really work to get it seated. I don't remember it being this difficult. Even with proper alignment it was a bear to get the base started, but once I did it pushed down with about 20# of resistance, which seemed like I remember it being last fall as I was thinking I could tighten it up just a tad to get better accuracy (I'm hoping the .040 bushing and large PFC give me more complete ignition and solve this but time will tell). Until I came to the part of the barrel where the charge sits and ignites. Could not push through by hand, had to resort to a rubber mallet and had to whack it pretty good. Bullet came through but the base looked like it was expanded a bit. I blame the resistance on carbon build up where the load ignites, but never imagined it would be that substantial. Also the base of the bullet now looked flared out a bit, and I can't imagine why it would be. Would NOT fit back into muzzle, so I swapped it and sent it through base last, and had a hammer down the entire way. It seems to have reset the base but it's still very hard to get it to re-start.
Not sure what is at work here. Any ideas?
When I sized them I put a line on the ogive to line up with the die, and ran them through 3 times. My bore definitely gives a different loading experience depending on alignment so I index and have my muzzle marked.
First one I had to really work to get it seated. I don't remember it being this difficult. Even with proper alignment it was a bear to get the base started, but once I did it pushed down with about 20# of resistance, which seemed like I remember it being last fall as I was thinking I could tighten it up just a tad to get better accuracy (I'm hoping the .040 bushing and large PFC give me more complete ignition and solve this but time will tell). Until I came to the part of the barrel where the charge sits and ignites. Could not push through by hand, had to resort to a rubber mallet and had to whack it pretty good. Bullet came through but the base looked like it was expanded a bit. I blame the resistance on carbon build up where the load ignites, but never imagined it would be that substantial. Also the base of the bullet now looked flared out a bit, and I can't imagine why it would be. Would NOT fit back into muzzle, so I swapped it and sent it through base last, and had a hammer down the entire way. It seems to have reset the base but it's still very hard to get it to re-start.
Not sure what is at work here. Any ideas?