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7SAUM Freebore
- Thread starter LR Guru
- Start date
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Curious to what kind of changes do you think he needs to make?
The SAAMI neck is .322 - .321 on the necks. Their base is .551 on SAAMI and their freebore is .0007 smaller. I have never had clickers with ADG brass in the 7SAUM and I'm into around box number 33 or so. I'll have to remember this. I also downloaded your reamer spec to save incase I do.
I run a 0.190 FB and a 0.200 FB mod saami chambers for body dimensions. Honestly I probably have 8,000 firings and never had a clicker in one. All Adg brass. Maybe I should go back to Las Vegas and go all in lol.
does anyone know what length dummy rounds i should make with .220 freebore?
So your making a dummy round to get a reamer made or your making a dummy round for a chamber job??????
I may be over thinking this. I got a reamer made already with .220 freebore. Do I even need dummy rounds since I have a custom reamer already? If I do what length shall they be.
No sir you do not need a dummy round.
Trying a new barrel for ELR shooting. 7 saum with a .200 freebore. 190 ATIP's with N570. Attached is the pressure target and the first 26 shots down the barrel. I'm doing a little something different. I'm not cleaning it until it fouls. Krieger 28" Heavy Varmint with a 8" twist. Suppressed. This one is showing serious promise. Shooting conditions: 86 degrees 65% humidity DA 2640' at shooting time All pairs of shots were 3 minutes apart 100 yards
yeah there are some promising looking loads there. ill be trying N565 with 180s
