New at reloading need opinion

[Wild Bill IV]

I did my first rebarrel of a rifle and made it a 25 creed. I have only been reloading for about the past 2 months after slowly acquiring the necessary equipment. I keep running into pressure issues it seems at lower velocity then others. I have been using N555 the last 2 times out. 40gr at coal 2.738 using 127 hammer bulletsat 2710fps. With this bullet I hit lands at 2.749 from what I measure. Although box hornady load fine and they are 2.800 anyways. At 40 gr of 555 I start seeing markings on the brass. Is this something to worry about or do I need to back off? It looks like the ejector is striking I have many more questions but only because I have nobody to ask. Haha
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edix:

There is a big difference between the cup & core bullets (copper cup with lead core) VERSUS a monolithic bullet (solid copper)!!!! You CAN NOT USE RELOADING CHARTS designed for core/cup bullets for reloading solid copper bullets!!! The solid copper bullet requires much more compression (force) to engrave the bullet and the bearing surface (the area rifling leaves its imprint on the length of the bullet) is much longer requiring even more force for full engraving!!! The lead core deforms much easier than the solid copper bullets!!! Plus, the friction in the barrel will also be much higher!!! Compare the sectional densities!!!

YOU WILL HAVE TO CLEAN THE BARREL SOONER AND MORE OFTEN WITH SOLID COPPER BULLETS!!! ESPECIALLY, THE REALLY LONG BEARING SURFACE BULLETS!!! TOO MUCH COPPER BUILD UP IN THE BORE CAN ALSO CAUSE PRESSURE SPIKES!!!!

That 127grain 25 caliber bullet has a lot of bearing surface!!! This is why you have the high pressure signs (primer crater, extruder imprint, heavy bolt lift and probably heavy recoil compared to the factory loads, which you have not noted)!!! Plus, the CCI 450 magnum primer has a hotter flash to ignite the slower magnum powders!!! Your N555 is a fast burning powder and would prefer the standand or BR in the CCI lineup!!!

You are experiencing very high pressure!!! Even though the small rifle primers are not flattened, you still have cratering!! WHY???????? The CCI 450 small rifle magnum primer cup is 20% thicker on the walls than the standard CCI 400!!! 0.025" vs 0.020"!!!!! Plus the much heavier radius in the cup wall to base transition will be bigger!!! This explains why the primers are not flat from over pressure!!!

p (pressure) = F (Force) ÷ a (unit area), or F = p x a!!!!!
The small flash hole will exert less force on the primer than the larger flash hole with the pressure being the same on both flash holes!!! Another reason why the primers were not flattened!!!!

 

[bozo699]

Edix,
What is your chambers neck diameter?
What does a loaded round measure?
Wayne

 

[rdremsek]

I did my first rebarrel of a rifle and made it a 25 creed. I have only been reloading for about the past 2 months after slowly acquiring the necessary equipment. I keep running into pressure issues it seems at lower velocity then others. I have been using N555 the last 2 times out. 40gr at coal 2.738 using 127 hammer bulletsat 2710fps. With this bullet I hit lands at 2.749 from what I measure. Although box hornady load fine and they are 2.800 anyways. At 40 gr of 555 I start seeing markings on the brass. Is this something to worry about or do I need to back off? It looks like the ejector is striking I have many more questions but only because I have nobody to ask. Haha
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[rdremsek]

there's your problem alpha brass

 

[ebb]

I had a half page response written, and deleted it. To the OP way too many assumptions are being made here. PM someone who knows what's up and continue this privately with one person.

 

[edix]

there's your problem alpha brass

I bought some Peterson brass I have yet had time to shoot it. I'll hopefully have time next weekend to do some more experimenting.

 

[ebb]

Put a new firing pin spring in the rifle, it can't hurt only help or do nothing better than the one in there now.

 

[64Rambler]

I bought some Peterson brass I have yet had time to shoot it. I'll hopefully have time next weekend to do some more experimenting.

You mentioned that you resized new Alpha brass, which you really shouldn't have to do. Maybe to round out a case mouth a bit, but as new it should fit. If you haven't already, don't size the new Peterson - just load a few and go see how the brass behaves.

 

[Webster]

That’s a great reply!… he admits he needs help and is new to reloading,…. So he comes here for help. We need all the new shooters we can get !… I’m guessing you were born knowing?……
Wayne

He had many relies stating he had pressure and didn't want to back off on the powder.

I'm not slow to catch on. However in a "sport" where all information contradicts each other its hard to grasp what the actual issue is. And when I mean all information contradicts I mean all. So yeah maybe I am a little slow because I don't know what the exact issue is bud. I can tell you one thing once I get something I got it. However should a person be seeing pressure with what I call a relatively low powder charge? Yeah sure you don't think a person has not tried backing off the powder? I don't see the issue with lower powder charge of course. However then I'm in 2600fps range. I might as well load subs then and fix my issue for sure and not learn as I go.

Sorry if I sounded like a smart ass. If those are ejector swipe marks on the case heads it's definitly high pressure no matter what the powder charge is. Maybe you have a tight chamber and barrel?

 

[edix]

He had many relies stating he had pressure and didn't want to back off on the powder.

Sorry if I sounded like a smart ass. If those are ejector swipe marks on the case heads it's definitly high pressure no matter what the powder charge is. Maybe you have a tight chamber and barrel?

That's why I'm asking for help and knowledge. Everything i read says look at the primer for the first sign of pressure. Well I get those funky primer strikes at 36gr of powder (where i started) on up. Now despite what I have read its a consensus on here that the primer mark i am seeing is do to it being a Rem 700 firing pin issue. OK still don't understand how that is. No factory ammo I have ever shot out of a 700 or any other model has ever looked like that. Hammer says pay attention to velocity along with ejector marks and primer. (Noted) moved the bullet out things got a little better. I guess I'll go deeper and try 2.700 that would be about 050 off the lands. Now my question would be how to tell if powder is compressed or not? I don't want to end up in another head scratcher.