270 WSM Reloading, Win Brass update

[The Norseman]

Groups same

I got a chance to try out the 135gr Hollow Point Boat Tail Sierra MatchKing
#1833 / 53.0grs of IMR / CCI LR Primer

I was pleasantly surprised, they grouped POI as the original reload.
I'm going to reload some more up, and make sure this wasn't a
fluke deal.

Thanks for reading.

 

[Nevada Ed]

Years back I had good luck with that JHP bullet but.............

my rifle liked the slow target load pushed with IMR 4064 powder
with a std CCI primer.

Have fun.

 

[The Norseman]

A Match for sure

Well the different Bullet and Reload of the Sierra 135gr Hollow
Point Boat Tail MatchKing #1833 /IMR 4350, 53grs/CCI LR
#200/Win. brass/maybe just over 2800fps, was no fluke.

I shot 7 of the 135gr Reload. All Bullets were right there on center,
grouped on top of each other.

Wow, both Reloads; 130gr SPFB and 135gr HPBT show real
pomise for the Long Range.

Thanks for reading my Update.

 

[The Norseman]

Improved Military Rifle 4064

Years back I had good luck
with that JHP bullet but.............
my rifle liked the slow target load pushed with IMR 4064 powder
with a std CCI primer. Have fun.

I do have IMR 4064. I thought I might try it. The only problem
I have is that I can't find a Reference for it; starting load.

Please provide reference(s) for the IMR 4064, thank you.

 

[Nevada Ed]

The JHP loads were shot back in 2009 with a standard Win. 270 case.

43.5 gr 4064 and
51.0 gr IMR 4831 ........ both did around 2510 fps.

In the early days of loading I tried the heavy 150 gr bullet with............
50 gr H414 maximum load
47.0C 4064
56.0C 4831
52.0 IMR4350 ..... Fac Dup load.

My rifle did not do well with these test for tight groups at 100 yards, with the heavier bullet.

However, in a 270 WSM case, they might work out a little better ?

Carry on.

 

[The Norseman]

IMR 4046

I went to the IMR Powder website. They have quite a bit of Data
for the 270 Winchester Short Magnum. IMR had Data on IMR 4064.
Eventually I try it out.

I did see that I have some 270Win reloaded with IMR 4064. If
I recall they did Ok in my 270Win.

Thanks again for reading my Post.

 

[The Norseman]

Pays to take a Break

Cruising through Colorado the other day, decided to take a break
at a Little Gun Shop. While snooping around.....

Low and behold, found two bags of 50 count Winchester Brand
270 Winchester Short Magnum empty Brass, marked $25.88 a
bag.

The Bags had been there awhile, all covered in dust, so I picked
them up, dusted them off. I just had to rescue them, for my
new 2019 Winchester Mdl 70 Featherweight 270WSM.

P.S., Last Fall I bought my first 50ct Winchester 270WSM bag that
have 80% of the Flash Holes are oblong.

I was really upset, but have now found out there appears to be
NO effect on the Accuracy of my Reloads.

Thank you for reading my Post.

 

[Nevada Ed]

Congrats on the find of MORE cases !!

You can drill out those oblong flash holes just a very tiny bit, to maybe help with better fps but don't get carried away.

Test the drill with a good case to try to get the proper fit, so you don't remove too much material.

Tight groups.

 

[The Norseman]

Win Cases

Thanks for the Reply.

I thought about Drilling out the Flash Holes with a proper Drill Bit.
I will leave all alone for now.

My other Winchester's with Oblong Holes DO NOT appear to have
effected my Reload's accuracy.

I will prep the new Winchester Brass when the Weather gets better.
I still have those new Hornady cases to try.

Thanks for reading my post.

 

[The Norseman]

RL-19

Thank you for reading my Posts.

Found a 1# Bottle of Alliant Reloader 19. I've read good reviews
for use in the 270 Winchester Short Magnum, so I'm going to
give it a try.

I want to stay 2800-2900 feet per second. The Hornady Reloading
Manual says 51.6grs, so that's what I'm going to try to be on
the safe side.

 

[Nevada Ed]

Thank you for reading my Posts.

Found a 1# Bottle of Alliant Reloader 19. I've read good reviews
for use in the 270 Winchester Short Magnum, so I'm going to
give it a try.

I want to stay 2800-2900 feet per second. The Hornady Reloading
Manual says 51.6grs, so that's what I'm going to try to be on
the safe side.

I have never tried the "Reloader" type powder in any of my rifle loads.
The data did look promising but just had too much other powders to buy it with all the IMR , Win. and Hodgdon powders on hand.

Good luck with that R-19 powder.

 

[elpac3]

shooting a win. 270, not the WSM but found the Barnes 110 TTSX with reloader 16 to be very tight shooting. Needs about a .125 jump in my 24" barrel, running 3160. Can shoot under 1/2" at 100 yds. The RL 16 is temperature stabilized, meters well and shoots clean.

 

[The Norseman]

RL-19 Great Group

My 3 test reloads with Alliant Reloader 19 went well. The target
group was; 1st on center, 2nd threw a little to upper left, and
3rd damn near in the first bullet hole.

135gr 270 (.277dia) HPBT Sierra #1833/51.6grs Alliant Reloader 19
/CCI LP #200Win Brass/COL: 2.875/2800fps? Crimp is just a
light bump.

I used my 10th Edition Hornady Reloading Manual, and just picked
2800fps for my test reloads.

I would say that Alliant Reloader 19 will work perfect in my
270WSM and my other Rifle Cartridges.