Reworking a 270 Winchester load and working up a new one

[reloaded_in_pa]

Hi everyone. I need to rework an existing load and work a new load up.

With the current component shortage I have all but exhausted my LRP supply and need to rework my existing load for the 270. My normal load was CCI 200's, mixed brass, 130GR Winchester SP bullets and 51.5g of H4350. I have a few thousand each of CCI 250's and Federal 215's. I was going to drop down to 49g and work back up and test with the chronograph. I've never used the 215's before but have used the 250's in other loads. Has anyone ever had issues with the Federals ? I'd like to only use one of them and not rework with two different primers. Which would you use ?

Now for the new load I'll be working up. This load will be for target practice and not hunting so I really don't need anything approaching 3000fps.

I have less than 200 of the SP bullets and want to work up a load for some cast. Some time ago I picked up a 277-135-RF Lee mold and cast some to test with. They have been powder coated and sized with an actual weight of 139gr. None of my manuals list H4350 for cast. I've referenced Hodgdon's app, Lyman's cast 4th edition and several older Lyman's and they all list mid range powders with cast, none of which I have. Has anyone succsessfully used 4350 for cast ? Or would it be best to locate something like 4198 ?

 

[reloaded_in_pa]

I loaded and tested both primers today. Four rounds of each primer igniting 50g of H4350. Range was 60 yards. First picture is from the CCI 250's. Averaged 2750fps. Second picture is with the Federal 215's. Averaged 2825fps. I've never used the Federal before but it looks like I will be from now on.

 

[rabid wombat]

I am no help on your primer selection, but nice shooting

 

[Charlie98]

I wouldn't have guessed a primer would have made that big of a difference... but it did!

I would try to find some H or IMR4198, or IMR3031 for those cast bullets... you can thank me later.

I used to load H4831 for my .348, with jacketed bullets. When I switched to cast bullets, my performance was horrible with that powder. On advise, I dropped down to IMR3031, and it's been the cat's meow. It provides me some good case fill in that big .348 case. I use IMR4198 for all my other cast bullet rifle loads (.30-30, .308, .45-70) but I think IMR3031 would work better in that big case.

 

[reloaded_in_pa]

I was surprised myself, I wasn't expecting that. I'll track down some IMR3031. There's a few of us that have been trading supplies over the last 6 months. I'm sure one of them will have an extra pound they'll part with.

 

[FROGO207]

Yeah I usually buy the 3031 two kegs at a time. And use it with many cast bullet loads and as a 223 propellant. Most accurate 300 Savage 180 grain lead combo I can find.