28nosler issues

[Gobears16]

So I've got a serious problem. I started load development with RL 33 and 195. I started at 85gr-87.4. I started seeing pressure around 87.1gr. My best consistent loads were at 85.2 with avg speeds 3050... gun was shooting great for 50 rounds... fast forward to resizing and loading same powder charge I'm getting extremely heavy bolt lift and I blew a primer.

I'm using a new jug of RL 33. Would this cause that much of an extreme in pressure? In my initial load I stopped at the first sign of a heavy bolt life which was 87.1gr. Now at 85.2 I'm blowing primers and increasing FPS by 100+.

Could a carbon ring be the problem? I don't have a bore scope so I can't look. How do you best remove it? Could the powder variance be that big?

I've got a big hunt coming up first of November and I'm stressing this won't be a reliable gun. Help needed.

 

[Epirate43]

I ran into the same issue with RL33 in a 28 Nosler. Pretty sure the carbon ring was causing the issue. The gun I loaded for needs to be cleaned every 30-40 rounds. Once it is clean there is no issue. I have since switched to h1000 because I had big velocity spikes with RL33

 

[squeeeeze]

I had the same issues with my 28 Nosler loading 195's but using Retumbo. 1st firings of new brass I had no pressure signs but on 2nd firings and on I had ejector marks and getting very sticky bolts. I backed my loads off and based it on my 2nd firings and on to keep pressure at a minimum. Idk what it is as I was perplexed but seems a somewhat semi common problem I have read about it other times with the 28. I posted up a similar post when I had the issues. Cleaning my Gun and chamber did not help at all.

RL33 is dirty and have heard it can cause pressure in temp swings which is why I won't use it here in AZ but looks like people certainly get speed and accuracy out of it.

 

[Gobears16]

I had the same issues with my 28 Nosler loading 195's but using Retumbo. 1st firings of new brass I had no pressure signs but on 2nd firings and on I had ejector marks and getting very sticky bolts. I backed my loads off and based it on my 2nd firings and on to keep pressure at a minimum. Idk what it is as I was perplexed but seems a somewhat semi common problem I have read about it other times with the 28. I posted up a similar post when I had the issues. Cleaning my Gun and chamber did not help at all.

RL33 is dirty and have heard it can cause pressure in temp swings which is why I won't use it here in AZ but looks like people certainly get speed and accuracy out of it.

what powder did you end up using? 180's or 195's?

 

[Gobears16]

I ran into the same issue with RL33 in a 28 Nosler. Pretty sure the carbon ring was causing the issue. The gun I loaded for needs to be cleaned every 30-40 rounds. Once it is clean there is no issue. I have since switched to h1000 because I had big velocity spikes with RL33

What load are you using for h1000? Shooting 180 or 195's?

 

[Epirate43]

What load are you using for h1000? Shooting 180 or 195's?

78 grains h1000 with 180 berger hybrids

 

[squeeeeze]

what powder did you end up using? 180's or 195's?

Still using Retumbo with my 195's. I'll build a load for my 180's at some point and will probably use H1000

 

[257Tony]

I had similar issues with R33 in my 28. Switched over to H1000, lost 100 fps, but gained a lot of temp stability, and a lot of confidence that the rifle will do what it needs to when the temps rise, or drop. 180 Hybrids at 3100 should be plenty

 

[Gobears16]

I had similar issues with R33 in my 28. Switched over to H1000, lost 100 fps, but gained a lot of temp stability, and a lot of confidence that the rifle will do what it needs to when the temps rise, or drop. 180 Hybrids at 3100 should be plenty

what barrel twist and load are you using to get 3100 in the 180's?

I'm thinking of going with 180 eldm's and H1000.

 

[LongBomber]

How many rounds were down the barrel when you started your load development?

 

[Gobears16]

How many rounds were down the barrel when you started your load development?

I shot 60 rounds of factory before I started load development

 

[jasonco]

A common theme with Big Seven's! You need to keep the barrel cleaner, than other cartridge/caliber. A bore scrub after 20-25 shots, is what needs to happen...religiously.

 

[jfolanddvm]

I had similar issues with a custom 28 Nosler, H1000 and 195s. Loads with new brass = no issues. Second reload of brass = huge pressure issues. Had to pull bullets and go back to starting point. Ended up several grains lower than original load. Out of curiosity, loaded several more virgin brass (from same lot) with original load and had no pressure issues. Still scratching head.

 

[Ingwe]

Not looking to pick a fight here, seriously now, just wondering why you guys go through so much trouble with the 28....barrel life, extra recoil, issues like in this thread, longer barrels, etc when essentially you are only gaining 250+-FPS over the 7mm Rem Mag. 250fos is the velocity of a Daisy Red Ryder BB Gun.

Think about that