270 WSM 165gr VLD load help
- Thread starter AlexF
- Start date
Help Support Long Range Hunting Forum
royinidaho
Well-Known Member
PM bigngreen he's working on the identical load......
emmagator
Well-Known Member
when did you get your bullets ive been waiting awhile? Is matrix make .277?
bigngreen
Well-Known Member
I've been very impressed with the 165 Matrix thus far!! I'm shooting them out of a 27.5 in barrel @ 3053 with 66gr of Retumbo. I have ran them up to 3100 FPS but it started stringing them out a little. The barrel is getting pulled and going in for Nitriding so until it gets back I'll have to wait to finalize some loads and drops, initial loads and drops look very encouraging! I should have some 169.5 Wildcats by then also.
I would expect a 24in barrel to be running in the 2900-2950 range, I haven't had any luck with R17 speed powders with the 140 + gr bullets and getting velocity without early pressure. I think powders in the R22 to Retumbo speed are the one's to look at with the heavier bullets. I plan on giving 4831sc a run along with H1000 again.
I would be very interested in what Quickload kicks out!!
I would expect a 24in barrel to be running in the 2900-2950 range, I haven't had any luck with R17 speed powders with the 140 + gr bullets and getting velocity without early pressure. I think powders in the R22 to Retumbo speed are the one's to look at with the heavier bullets. I plan on giving 4831sc a run along with H1000 again.
I would be very interested in what Quickload kicks out!!
Last edited:
Matrix Ballistics from Canada sell .277 165gr and 175gr hunting VLD.
The 165 is stable in (at 59F) 1-10 inch barrel twist under normal conditions
The 175 requires a 1-9 inch barrel twist
Custom Rifle Bullets Built for Accuracy | Matrix Ballistics
I've heard many negative comments about Retumbo: it shoots well when it's hot or when it's cold but not in between, sometimes there are fliers...
Is Retumbo a good accuracy powder? I don't care much about muzzle velocity since higher velocity equals greater recoil, but will take any "free" velocity if it comes with accuracy.
elkaholic
Well-Known Member
I've had good accuracy and velocity with Retumbo and it seems to be quite temp consistent as well. I have never heard of erratic behavior at normal temps and good at both extremes? I would be somewhat doubtful of that......Rich
bigngreen
Well-Known Member
I've had great accuracy with Retumbo, very low ES, excellent velocity and no POI change in temps from -30 to 90 plus. The only down side I've experienced is it is sooty. I get fliers with it if I used CCI primers but Fed 215's got rid of them!
That said if you don't want recoil Retumbo may not be good, everything I've loaded it in you end up filling the case with it, velocity = recoil. I use a brake on my 270 WSM and I don't worry about recoil just ranging and reading the wind.gun)
That said if you don't want recoil Retumbo may not be good, everything I've loaded it in you end up filling the case with it, velocity = recoil. I use a brake on my 270 WSM and I don't worry about recoil just ranging and reading the wind.gun)
Thanks, that was I expected: most of my shooting/hunting buddies are farmers who are great shooters and hunters but always try to save money on reloading components but never on rifle or scopes!
I noticed that both Sierra Reloading Manual #5 and Weatherby recommends Federal 215M for large overbore magnums to insure that the full powder load is ignited.
royinidaho
Well-Known Member
I too think an 8 twist for the 277 would be perfect!
bigngreen
Well-Known Member
Any of the cut rifle barrel manufactures should be able to cut what ever twist you want. At one time Mcgowen offered a buttoned rifle barrel in 1-9 but I haven't seen it as an option for a year or so.
The 1-10 at my elevation (5612, 40*) with the 165 Matrix has a Miller stability factor of 1.49 and in a 1-9 twist a factor of 1.84 and the 1-8 a 2.33.
elkaholic
Well-Known Member
Bartlein will cut 9.001 if you want it and even do it in a GAIN twist......Rich
