340 Wby range re-visit

Greg Nolan · Jul 24, 2011

I went again today with the factory synthetic stock in place and it shot 2 good shots and then drifted to a horizontal 4" pattern again. I still plan to have the wood stock bedded and I noticed factory pressure points in the barrel channel. I'm thinking of having it free floated and removing the pressure points. What do you all think? Oh and I also noticed I was 5 grains over Nosler's max on my load so I droped it down 2 grains to see if that improves things. I know my shoulder will be happy to hear that :lol:
The 270 is a work in progress. I tried it again today and it shot great again. I'd kind of like to go up to 150 gr but I love the Accubonds and it's going for Idaho mule deer in Oct.
I've had such great success with the 225 gr. in the 338 RUM I'm going to hang in there and leave the heavy 260 gr. bullets for the 375 RUM. It's all fun. I also adjusted the trigger on the Vanguard 243 to a crisp 2.75 lbs from the 4.5+ lb. creepy pull it had.
Thanks for all your combined help. :grin:
Greg

BK · Jul 24, 2011

I think what I would do is to put a credit card shim right in under the chamber as a redneck free float job before I did anything permanent. If it helps, all you have lost is a couple of loads. If not, you won't need to re-install the pressure point.

SJB358 · Jul 25, 2011

I agree with Kurt, do the old credit card shim and see if it helps. Seemed to work well with my 264WM and it was a good run before I did the bedding job.

Check out the 150gr PT's Greg. They run a hair over 3100 in my 270WSM and should be awesome in the bigger Weatherby. They have a good BC and should really penetrate well on anything, including elk. Love those long heavy PT's. They just seem to be very accurate in my rifles. Scotty

kraky · Jul 25, 2011

FWIW...not sure what bullets you are shooting but I have a jap built mark V alaskan in 340. For some unknown reason the only 2 bullets it likes (and it does like them) are the 250 grain hornady spire point and the 250 nosler Partition. At 2930 with good brass life these will work.
I've tried a bunch of other bullets including almost all the lighter ballistic tips, AccuBond, lighter hornady...it doesn't like anything besides the 250's.

boomer68 · Jul 25, 2011

I have a factory stainless .340 with a synthetic stock, and I am planning on replacing it with a B&C Medalist soon. The only bullet I have tried so far in it is the Hornady 225gr IB and shot pretty good.

Oldtrader3 · Jul 25, 2011

Mine shoots the 225 Partitions really well. It does not like the 210 Partitions for some reason but does shoot the 250 AccuBond very accurately. The 250 AB's were 2890 fps 15 feet from the muzzle.