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6gt

I am about to order them.

Alpha 6 GT brass is .013 Thick and about .269 Loaded.

.264 Bushing
.2405 Mandrel to get .003 Neck Tension

Just waiting for bushings to come back in stock. I have 1K once fired alpha brass I dont want to resize until i get the new SAC die with shoulder/neck bushing. Will keep shooting my old 10-12x fired alpha brass until it comes in stock.
 
You guys have me wanting to bump my speeds down a little. 36.0 H4350 gets me 2940 with 105's. Maybe I should bump it down to 34.8. Case fill might start to get a little low.
I have loaded from like 2700-3000 with the GT. The most consistent range seems to be 2900-2940. SD and ES shrink in that range for some reason. H4350 as well. I think I just run 36.1gr and send it.
 
How often are you guys cleaning barrels? Seeing any speed buildup after say 100rds without cleaning?
Yea you will some some speed increases over a 2-300 round match. Generally about 20-30 fps over that range depending on how hard you scrub the barrel. Just throw a garmin on every 5 stages or 50 rounds or so to check and see if its trending.

I clean every 2 (one day matches) or every 2 day match so not more than 300 between. Pull the barrel at 2k.
 
I am about to order them.

Alpha 6 GT brass is .013 Thick and about .269 Loaded.

.264 Bushing
.2405 Mandrel to get .003 Neck Tension

Just waiting for bushings to come back in stock. I have 1K once fired alpha brass I dont want to resize until i get the new SAC die with shoulder/neck bushing. Will keep shooting my old 10-12x fired alpha brass until it comes in stock.
in using a .266 and getting 2 thou -2.5 thou neck tension. No mandrel currently
 
Not really. Unless you are tyring to set some benchrest world class record, no one cares about lots in berger hybrids.
I’ve heard locals complain about noticeable velocity change and poi shift going from lot to lot with berger 105’s. If this is anomalous, please soothe my frustration lol. I did email
Brownells to let them know and to see if they would offer a swap or something. If I can load my magazine with bullets from different lots and experience no difference in POI across a PRS stage or PRS match, then there’s no point in me chasing matching lot #’s.