Change loads when using new brass?

[Bmfdez]

Hey all,

I know this is one of those topics that have been asked 10,000 times. If there's a link to an old thread you can point me to, that would be great. If not, would greatly appreciate your input / opinion on this topic.

My questions is:

- Do you re-test your loads when you switch brass?
- Questions 1: when using same brass type (223 / 223, 556/556, 308/308, 762/762)?
- Questions 2: how about when using same caliber but diff brass type? 223 / 556, 308/762? I know unless it is on the high end, and case capacity is diff, then its obviously a no. But let's say it's on the mid range of the load and will fit both cases.
- Question 3: What are the results when using same brass type but diff headstamp? and results when using diff brass type and diff headstamp? is there really that much of a diff?

Let's say I shoot all of this at 100 yrds.

Any input will be greatly appreciated.

thanks in advance for your help.

[ar15barrels]

Different makes or even different LOTS of brass have different internal capacity.
If you have worked up a load with a spacific type of brass and you change to a different internal capacity of brass, your load will change.

If you are just doing shortrange blasting ammo, this won't matter.
If you are going for best accuracy, this will matter.

[waveslayer]

Different makes or even different LOTS of brass have different internal capacity.
If you have worked up a load with a spacific type of brass and you change to a different internal capacity of brass, your load will change.

If you are just doing shortrange blasting ammo, this won't matter.
If you are going for best accuracy, this will matter.

+1 do a search on the Hide from Dan Newberry about different brass he has percentages that are dead on when switching from Winchester to Lapua for example. but yes AR15 nailed it

[stilly]

That is why I just used mixed brass up front. It is sometimes hard to suppress the inner OCD guy, but it makes loading so much faster now that I no longer need 400 bins and trays for various shells. Pistols do not seem to matter much.

['ol shooter]

That's a good enough reason for me to stay in the middle of the powder chart, which I almost always do anyhow.