I have ordered a barrel to make a 270 Bee what powders have been working well for you? Currently I only have Retumbo to try and a small amount of Magnum. I have some 140 gr Accubonds, 150 gr ABLR, 150 gr Hornady Spire Point and 160 gr Partition to try. It will be a while till I get the barrel and get the gun up and running but I want to get some proven powders and loads in the mean time.

Imr7828

H4831

When I had a 270 Bee I used Rl22, but today would be inclined to grab RL25.

This is based on how well it has been working for me in the 7mm mags....not much difference really.

With the 140's try RL-25. The 160's IMR-7828. Never tried the 150's in the my .270 Wby.

IMR 7828 works well for me.

Best groups out of my model 70 rl22 with 140gr accubonds.

RL22

Add Ramshot Magnum to what's already been mentioned...

I haven't experimented much, but so far have tried RL22 and 7828 and am getting great accuracy from RL22. Chrono hasn't been working so not sure of velocity.

7828- very accurate, fast, and consistent for me. RL 22 was accurate but not as fast. as was RL25.

RL22

There certainly are some powders being mentioned quite a bit. I forgot I still have 2 lbs of the old Hercules RL 22 so will give it a try. I'll keep an eye out for some IMR 7828 ssc and RL 25. Alliant powers are pretty hard to come by these days.

Thanks for the info guys.

I am with Bob on this one Gerry, 7828, RL22 and RL25 should work really well. Since I started working with RL25 it has trumped 22 in my 7's and I imagine it would only be better yet in the 270WBY. Retumbo would be another good one too I bet.

Not sure what powders you can get your hands on, but I'd gladly run the numbers for you.

For me, when using 130's, 7828ssc has by far provided the best combo of accuracy and speed...3400-3500 fps. In addition, I have found it to be consistent from lot to lot. RL-22 provided speed, but not accuracy.

For 140's, RL-25 was the winner.

I was able to get some IMR 7828 ssc today so between it, RL 22 and Retumbo I'm pretty sure some good loads will be found. I'm going with a Benchmark stainless 1 in 9 twist the same contour and length as the factory Sako guns, length will be 62 cm which is 24 3/8". The action is my good old LH Sako L691, should be a great gun when all is said and done.

If you would like to run the numbers I would definitely appreciate it.

I could match factory specs in all bullet weighs using IMR 4831. Obviously several other powders around this, to a little slower would also work well.

I just got my 270WBY together with a 25" Bartlein. Only two range sessions and just today with Chrono.
I only want to use 150's.
RE22 is accurate but 69.5grs with a 150BT is only 3050. Factory 150 Spire Points go 3130-3140.
I'm going to bump it to 70grs and also try about 72grs of 7828. The one load of 7828 I tried first time out was least accurate but still was 3/4'ish. R22 will drive tacks.

If I can get 3100 with a 150 at 1/2-3/4" in a 7.5lb scoped 270WBY I'm in heaven...

I may try RL25 although I have tried it in several rifles without any success, yet. (WBY's and 7mags).

Dave

Good luck Dave, let us know how it all works out. The lightest I want to use is the 140 gr Accubond, there is a lot to be said for going with a 150 gr or heavier like you are doing.

Seems like the 140's and 150's really shine in the big Wby. It has the case to send them screaming along pretty quick like. RL22 and 7828 should be just about perfect in that Wby..

71g R22 under the 150 Hdy SP duplicated the Wby factory load. It gave 3265fps and well below moa accuracy in a 26" Mk5.

Norma powders are starting to be availaible. I just picked up an 8# jug of MRP, a pound of N-217 (formally MRP-2) and a pound of URP (formally N-204).

MRP is pretty close to RL-22, some claim it's the same stuff. With MRP, you can pour Norma powder into those Norma (Weatherby)cases...

Keeps it all in the family, probably pretty close to Norma/Weatherby factory loads.

DF

Dave with a 25 inch barrel you could get within 75 to100fps of that with a plain old 270 Win. Accuracy is another story but I woulda' thought you'd do better for speed in a Weatherby?

It sounds like he is happy to leave a few fps on the table to get an accurate load with reasonable chamber pressures, I would do the same.

I have made one change in the above plan the Sako will become a 358 Norma Mag since it will be a simple rechambering of the 35 Whelen barrel (I have both a magnum and standard bolt with that action) The 270 Wby will go on my super smooth LH Rem 700 and should end up under 8 lbs pretty easily which will be nice to pack around the mountains here.... I didn't want to sell those guns for next to nothing so I'm keeping them both and am going to end up with both a 270 Wby and 358 Norma. Those two are replacing a 264 WM and 375 Ruger in my line up.

That 358 and 270 will be a perfect match Gerry. Should be an awesome combo. I really dig the Norma. What twist is the barrel your getting screwed on.

It has a 1 in 12 stainless King barrel 22" long which should be perfect as a bear and moose thumper that can reach out a long ways if necessary First up will be those 275 gr Barnes Semi Spitzers and Woodleighs of the same weight. The 200 gr TTSX is an intriguing bullet I may try, I'm low on 225's and 250's right now but will see if there is anything locally. Like with your 35 Newton I really hope to use the 225 gr Accubond as an all around load and some kind of heavy bullet as a close range thumper. We will see what the gun ends up liking.