That bolt you just posted just dropped in. Are they somewhat undersized to do this? Normally I tap bolts in with a hammer. I've only ever had them drop in like that on crappy rock and the rotten brick in my garage.
My record was 17 shitty hardware store bolts that I removed and pounded flush once the glue ins were set. RB's tend not to work because they like to make themselves permanent. This could have really helped me 5 years ago. If I ever live next to a sea cave again, I'll definitely use these as my directionals to set the glue ins from.
Nicelegs i bet you had the older ones that didn't have a cleaning bushing yet?
I used 3/8" X 1 1/4" mild steel weak ass sleeve bolts. At a few cents each and to only be used for a few days, they worked. The cave was close to horizontal for nearly 40 feet and almost always steeper than 45. I actually used the bolts as anchor points for a series of rebelays rather than pure directionals for the drilling. There were a couple key spots where I could tie a beefy thread or a section of harder rock where I'd put a powers. It was still a bit terrifying calculating the swing potential if those bolts blew.
In all, only one blew and I didn't swing since my hook was in contact when it happened.
I actually used the bolts as anchor points for a series of rebelays rather than pure directionals for the drilling.
Sweet. What you described is basically how we've been bolting roofs on lead, with 1/2" RBs instead of plated bolts. Patch the holes and it leaves virtually nothing other than some camo'd putty in the cliff.