Would changing from LRP to SRP brass make a big difference

horsemen61 · Mar 16, 2020

Howdy everyone

Here is my question, Would changing from Hornady large rifle primer brass (6.5 Creedmoor) to Starline Small rifle Brass make a big difference in group size if all other things were equal? Same bullet,charge, primer, oal

troy fairweather · Mar 16, 2020

Don't think so, good chance you would have to work up the load again. Seen some videos were the srp in the cold had missfires with some powders.

horsemen61 · Mar 16, 2020

troy fairweather said:
Don't think so, good chance you would have to work up the load again. Seen some videos were the srp in the cold had missfires with some powders.

I tend to agree with that only reason I question is I tried some srp brass and across the board my groups tightened up a couple were so good I didn’t want to shoot 5 shots I did anyway
Pics don’t mean a thing but here is a couple of groups at 100 5 shots

troy fairweather · Mar 16, 2020

horsemen61 said:
View attachment 899536 View attachment 899537 View attachment 899536

I tend to agree with that only reason I question is I tried some srp brass and across the board my groups tightened up a couple were so good I didn’t want to shoot 5 shots I did anyway
Pics don’t mean a thing but here is a couple of groups at 100 5 shots

View attachment 899536 View attachment 899537

I could see the primer pockets holding up better with the srp. But if the srp are working for you is use them.

horsemen61 · Mar 16, 2020

troy fairweather said:
I could see the primer pockets holding up better with the srp. But if the srp are working for you is use them.

I believe I will I’m just surprised is all, I’m going to run that same load with large rifle primer and see if there is a difference

Walkalong · Mar 16, 2020

horsemen61 said:
Would changing from Hornady large rifle primer brass (6.5 Creedmoor) to Starline Small rifle Brass make a big difference in group size if all other things were equal?

Doubtful. Small? Maybe.

Blue68f100 · Mar 16, 2020

If your shooting in extreme cold you may see a difference, LRP better. The SRP is what I have and you can push them harder than you can with LP and not stretch the pockets. You may see a slight change in velocity numbers, < 25fps. But that could just be the powder temp change.

TonyAngel · Mar 16, 2020

Blue68f100 said:
If your shooting in extreme cold you may see a difference, LRP better. The SRP is what I have and you can push them harder than you can with LP and not stretch the pockets. You may see a slight change in velocity numbers, < 25fps. But that could just be the powder temp change.

I agree with this. If that brass is a deal you might want to grab it, but plan on having to tweak the load. Saw a lot of this sort of thing shooting super, using rifle primers.

Would changing from LRP to SRP brass make a big difference

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