Thread: Pressure / barrel speeds?

Originally Posted by Gibo

Sweet, im working a grain under where i have been to so far so will go from where ive been

Hey gibo, with the Tikka. You will notice that your bolt lift will get quite hard when the pressure rises.
Or at least that's what I find. I can struggle to open the bolt at times when finding max load. But there won't be a mark on case and primer is only slightly flattened

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Originally Posted by 257weatherby

So what is your current powder type/gns/projectile type/weight/barrel length?

2209 51.5 grns fed 210 norma brass 21 3/4 inch barrel tikka 270 140 grn nosler ab. Been up to 52.4 grns no signs at all

Originally Posted by puku

Hey gibo, with the Tikka. You will notice that your bolt lift will get quite hard when the pressure rises.
Or at least that's what I find. I can struggle to open the bolt at times when finding max load. But there won't be a mark on case and primer is only slightly flattened

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Cheers K, never had trouble opening the bolt yet

Originally Posted by Gibo

2209 51.5 grns fed 210 norma brass 21 3/4 inch barrel tikka 270 140 grn nosler ab. Been up to 52.4 grns no signs at all



Cheers K, never had trouble opening the bolt yet

Am currently working up loads for a 22" barrel .270 also, on a Weatherby Ultralight action, currently at:
-150 Berger VLD: 58x2213sc@84 fed210 2900fps 3/4" average (no pressure signs)
-140 Berger VLD: 58x2213sc@84 fed210 2900fps 5/8 average (no pressure signs)
Am going to bump the 140 VLD up 2 grains in 1 grain increments to get to 3000fps, and try the 130 VLD Classic Hunter (top BC for a 130gn 270 proj) looking to get to 3100fps, probably the maximum sensible velocity for a 22" barrel, (especially in a 6lb rifle) not able to get the consistancy in accuracy and velocity I wanted from 2209, if 2213 hadn't worked so well I would have gone to 2217

Have tried a few others but the Bergers work so well I'll stop with them.
This rife is going on patrol in a few hours, hoping to find a resting place for a 150 VLD before oh dark tomorrow night!

Is it just me or is the adi manual weak?