Anyone reload for 350 legend?

[4stringdude]

I loaded Berry's 147 grain RN .356 with H110. I tried four different loadings: 27.0. 27.4, 27.8 and 28.2 grains of H110. OAL was 2.100". I used new Starline brass. Call me anal, but I weigh every powder charge.

None of my rounds showed pressure signs. The first two loadings were accurate. My groups opened up on the two higher loads. I'm very curious about you seeing pressure signs on a lighter loading of the same powder.

 

[jbs27572]

I am using 147 grain RMR heavy match bullets. They are shorter and less tapered than the 145 Winchester projectiles. I was using a COAL of 2.06". The Win 145's were loaded to 2.207" COAL. If I subtract the difference in projectile length of the Win 145's - RMR 147's , it would be 2.09" so mine may have been a bit short. Also, I am using Winchester brass which I have read has slightly less case volume so that might also contribute to the higher pressure. How long are your Berry 147 gr bullets?

 

[4stringdude]

I measured half dozen Berry's 147. The projectile length is .668" +- .001".

 

[jbs27572]

These ones from RMR are only 0.628" on average. Subtracting 0.04" from your OAL would be 2.06" so case volume should have been very similar. I wonder if it's the difference between starline and Winchester brass. I couldn't find any Starline when I was ordering stuff and RMR had a good deal going on primed Winchester brass they got from pulling commercial ammo (250 for $100 for primed cases).

 

[LBAhunter]

I've been loading my 350 with resized 200 gr Hornady FTXs with excellent results.

I would call Dennis at Fury, have him make me some .355 200gr. He made me some .358 200gr for my Max.

 

[jbs27572]

I loaded Berry's 147 grain RN .356 with H110. I tried four different loadings: 27.0. 27.4, 27.8 and 28.2 grains of H110. OAL was 2.100". I used new Starline brass. Call me anal, but I weigh every powder charge.

None of my rounds showed pressure signs. The first two loadings were accurate. My groups opened up on the two higher loads. I'm very curious about you seeing pressure signs on a lighter loading of the same powder.

Did you shoot yours through a chronograph? What were the speeds?

 

[4stringdude]

@jbs27572 I regret that I did not shoot those through a chronograph. Sorry I cannot help with velocities.

 

[LBAhunter]

Anybody tried the Sierra 155gr bullets?
https://www.midwayusa.com/product/1027066226?pid=951687

 

[jbs27572]

I haven't tried them. I am more interested in finding good plinking bullets that don't have feeding issues with my rifle.

The 147 gr bullets from RMR were fine with the old barrel but they feed like crap with the new one. It must be a difference in the feed ramps or something. I don't know if anything can be done to fix that or not. I will try another magazine but I don't think that is the issue. I could also try polishing the feed ramp I guess but the issue is the bullet is getting jammed right into the feed ramp, pushing the bullet further into the case. The more tapered 145 gr bullets from Winchester do seem to feed reliably so it is the blunter profile of the RMR bullets that is the issue.

The other issue I have with the new setup is a tuning issue. Even with the adjustable gas block fully open, there isn't enough gas pressure to lock the slide back. It will eject with supersonic ammo but not with subsonic. I will try a lighter buffer and buffer spring to see if I can solve that.

 

[jbs27572]

I am getting some strange results.

24 gr H-110 is giving me more velocity than the 27 gr of whatever powder they use in commercial Winchester 145 gr bullets and 25 gr H-110 is overpressure enough to blow primers and bulge cases. I was detailing this at another forum and the consensus seems to be "try a new can of powder". I will be picking up some new H-110 as well as maybe a couple others at a gun show this weekend to see if I get the same results.

The other issue I am having with my new barrel is a tuning issue. The barrel came with a free adjustable gas block but even with the block all the way open, it is under gassed. With supersonic ammo it ejects the shell but does not lock back on an empty mag. With subsonic ammo, it doesn't even eject the shell. I ordered a lighter buffer spring and a 3 oz buffer to see if I can get it cycling properly. The buffer spring I ordered is the TTI ultimate light-speed buffer spring from Taran Tactical Innovations. It is significantly shorter than my current buffer spring. Is that the way it is supposed to be? I thought it would just be a weaker spring but be the same length.

 

[Half-Cocked]

I have reloaded the makers bullet before in 350. I used lil gun with I can’t remember how much o want to say 15 grains? I remember I used the Hodgkin site and used the Barnes published data as a guide.

Not sure what velocity but the group was tight no over pressure and soft shooting. It would kill a deer. No significant drop zero at 50 shooting to 100