Home Forums Reloading Big Game Rifles modern powders in the .270 Win

I'm going to swipe this load. Give me a couple weeks and I'll post results. Had a sweet Ruger tang safety 280 years ago, but always wanted a 270. Just scratched the itch with a Win 70... Can't wait to get it started!

Looks like you have a shooter.

^^^
That’s some good shootin’. Probably less than 2700 fps.

60.3gr of magpro, WLR, 150gr hornady seated 3.205. This load has shot extremely well out couple model 70’s.

John, I thought you preferred the 140's?

Let us know how yours does. I'm running that bullet .020" off the lands. I've always found the ballistic tip bullet very easy to load for. That load is approaching 3,000 fps in my rifle. It is a couple grains off of a book max load. That rifle is new to me, so I still need to wring it out, along with a 1956 270 fwt I bought on the same day.

I haven’t shot 140’s in awhile. My daughter now shoots 150 partitions. I usually shoot 145 eld-x. At a gunshow awhile back guy had these 150 Hornady’s 3 boxes of spire points 4 boxes of round nose he said $50 bucks you can have them all. I gave the round nose too my buddy.

I'd have switching to them myself for that price!

Years ago on the Campfire, someone asked a question about what is the fastest load with a 220 grain bullet one could get out of a 270. That sort of caught my interest, so I took it to task to find an answer for that question. Looking at published load data and the pressure numbers listed, H 4831SC jumped out at me.... So with 200 and 220 grain bullets, I worked up some loads, as far as I could push them and posted what my chronographed reported as their velocities. I went beyond published load data, but had no problems with loosened primers... even after 10 shots on the same brass.

Needless to say, in Campfire fashion, I got flamed all over the map. It ran many pages in just a couple of days. And then per usual someone asked if I had pressure tested the loads.... Uh no, "my personal" pressure testing lab was down and in the shop.....

However, someone supported my work, and posted his phone number. So he immediately got flamed also, but when asked, he said yes he did have a pressure testing lab, and gave a phone number, with a 541 area code. Since I live in the same area code I called it. It was answered with, "Hello this is Nosler Bullets, how may I direct your call?". I asked for Mike, who had made the post supporting me ( and the ONLY one supporting my findings). We had a good conversation.

Mike simply stated, you can't get enough 4831sc in a 30/06 to exceed SAMMI specs. He also later posted that on the thread, which quickly died and went to page 3 then 4 then 10 real quick. He had received quite a few calls.

Fast forward, I asked him about the 270 also. He told me on any 06 based case, you can't get enough 4831 in a case to exceed SAAMI specs. IN a 270, I only shoot two bullets on a regular basis out of my Model 70 in 270. The 140 grain Ballistic Tip and the 160 gr SMP Partition.....the latter I push to max velocity, just like a do the 220 SMP out of the 06.

So in both, I've load enough 4831 and also 4831sc, that if not crimped as the powder expands it will push the bullet out of the case. So I crimped them, a roll crimp worked just fine, but I did pick up a 270 crimp die from Lee...

IIRC, in both instances, my max loads were about 200 to 250 fps MORE than max loads were listed in load data manuals.
Didn't experience any loose primer pockets, when rounds were reloaded more than 10 times. Do people really need the extra velocity? probably not, but with those bullets I decided if it was there, I'd use it.. especially with the partitions.

This was results from someone who normally just uses IMR 4064 or 30 grains of IMR 4198 as hunting loads with his 270s, and 140 gr Ballistic Tips...either that will work just fine to 250 yds or more on any Deer that ever walked.

But if ya 'want it all' out of a 270, H4831 or H4831sc would be your best powder choice.


oh and that Mike at Nosler? At the time, he was their head ballistician ... Take that with how ever many grains of salt ya want to....

Beautiful stock, I'm looking at stocks now, first order of business.

Also looking for good source of 4831/sc, online sources are highly variable. Checking LGS first.

Prices are a lot higher than I remember, still have a couple of pounds of IMR 4350. Worked well in my 280 and 30-06, but I knew when it hit excessive pressures with no doubt.

I'll try 4350 catiously, but will go with 4831 from what I've seen re: burn rates and potential as soon as I put the action in a stock.

.270WCF
110 Barnes TTSX
Win Brass
59gr R17
Fed 210
3.250

Consistently under an inch at 200yd zero.
3454 avg from a 24” factory Rem barrel