Thread: Advice please

Need someone advice here lads. Have done my first loads for the 284 and am seeing swipe marks on most of the brass, can open bolt but very sticky at top. I have shot this load for a few hundred rounds before (but was loaded by someone else) so should be good just need to find where im going wrong. Brass has been annealed and cleaned for the first time, and I have fl sized brass to push shoulder back .002” from fired case. Was wondering if excessive head space but have measured with comparator and .002” should be ok? Or possibly small amount of lube on case?

Different batches of powder?
Different scales?
Does the load have the same speed?

Different brass?

I would be checking for a carbon ring as if nothings changed and you've fired a few hundred rounds that is more than likely as seen it plenty of times before.
I use wipe out with accelrator which after owning every product ever produced is by far the most effective.
Just follow the instructions

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Same brass only difference it has been cleaned and amp annealed, same batch of powder, temp was no higher than normal. Gave the chamber and bore a good workout before taking chamber and oal measurements. Didn’t bore scope after cleaning to check for carbon ring as I thought i had done a good job
Was trying different seating depths for the previous load being the longest and work back, the scrape got a little lighter with more jump but didn’t disappear

Possibly the web has expanded over multiple firings and your die wont bring it back down enough?
Have you checked case overall lenght? Could have grown and need trimming.

Does a loaded round with firing pin removed from bolt chamber and extract with zero friction or is it a bit tight either closing or opening the bolt?

I assume you have double and triple-checked the power charge with the person who loaded the original lot?
Same projectile?

Usually pressure increases with a deeper seating depth, due to less case volume.

sounds like the original load was "warm" and close to max pressure. If you're using different scales then you could easily be adding slightly higher powder charge. Differences in humidity while reloading can also create another variable & push you over the top.
What powder, charge, pills & COL are you running. Quite a few on hear with plenty of 284 experience that may be able to comment.

If you've still got a couple of the original rounds pull them and weigh the powder on your scales.

This is a bit like asking how long is a piece of string.

You need to provide the weight and type of powder, projectile, and primer before any meaningful info can be given. 284's are notorious for doing this and expanding primer pockets with hotter loads. It happens for some strange reason after 200 rounds in some new barrels.

Originally Posted by veitnamcam

Possibly the web has expanded over multiple firings and your die wont bring it back down enough?
Have you checked case overall lenght? Could have grown and need trimming.

Does a loaded round with firing pin removed from bolt chamber and extract with zero friction or is it a bit tight either closing or opening the bolt?

Difference in in web is .001 bigger than sized case, brass has been trimmed. Loaded rounds had no friction apart from the ones that were just touching the lands

Originally Posted by chainsaw

sounds like the original load was "warm" and close to max pressure. If you're using different scales then you could easily be adding slightly higher powder charge. Differences in humidity while reloading can also create another variable & push you over the top.
What powder, charge, pills & COL are you running. Quite a few on hear with plenty of 284 experience that may be able to comment.

Id say you are right, original charge would have been up near the max then add in different gear, different room where loading.
If the brass was only neck sized previously then i have FL sized taking the shoulder back .002” would this change things? Put 3 shots over crono while there and they were down around 5fps. These were 3 rounds that had .025 more jump than normal load.

Load is 53gr 2209 162 eld-m fed 210m primers factory t3 20” barrel
OAL 3.113

I have a 2209 load in 20in 284 running 154 SST's & that's also 53.0gn with COL 3.100. Its not showing any pressure signs but probably getting up there.

Greetings @Hunterdave,
I think I may have an answer. AR2209 was sped up around 2,000 and the Hodgdon/ADI max of 53.5 grains of AR2209 with the 162grain has pressure in CUP which suggests it was for the older and slower powder. You seem unable to provide velocity for your load but if it is anything over 2,750 fps then your load is too hot. This may be from the powder or the Norma cases may have less capacity than the Winchester cases used by Hodgdon. In short if your velocity is over 2,750 fps then your loads are almost certainly too hot.
Regards Grandpamac.