Thread: What causes key holing in sub loads

Originally Posted by Bill999

That sounds great mate
Is HP hollow point?

I'm getting the feeling that I'm not setting these ones up right.
Are there hard and fast rules to getting lead projectiles right?
I'm pushing them with 8.5 gr trailboss to get under the sound barrier

Yes they are Hollow point and the lead mix is soft with the lube is good to 2000fps before lead fouling happens
they should expand to around .400" at 1050fps, 8.5 of Trail Boss is ok for sub loads, if you want a bit more range
AR2206H is good to push up to 1900fps