Max Chamber Pressure

[English Rifleman]

So are we to understand you are working with a 22" bolt action rifle?

Barrel length will have little or no effect on max pressure as upper pressure is realized in the first few inches of bullet travel down the barrel.

If you are working with a bolt action as i think, I understand. Primer protrusion & flatness would offer some strong hints. Resistance on bolt lift would indicate you have likely exceeded pressure limits.

Not sure if anyone on this side of the pond has had any exposure to RS52. See they list load data for .24 nosler with up to 100 grain bullets. Looks like burn rate may be close to IMR 4320 / Varget. for the most part I feel you are on your own with this propellant.

Would contacting Reloader swiss be a option in terms of seeking a start point?


My limited knowledge on this propellant is giving me the impression that you will not be likely able, to fit enough powder under the 107 SMK  to get to max pressure for a bolt gun.

So I would reach out to the distributer & share the water capacity of your cartridge & see if they may be able to offer some insight as they likely have more experience in this matter than most if not all of us here.

Keep us posted!

As Bizar as it might sound, No i Have an ar15 Platform. UK do not allow Semi-auto In centerfire rifles. ( In The general. although there are exeptions)

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i was asking how we find out our own pressure,
because i cant find data thats even close to my barrel / powder / bullet / case.
trying to find my first load for new rifle. so have no Mv as a guide.
so what Mv are you saying stay away from

for info
22" heavy barrel / RS52 / 107 SMK /Lapau Caase
Ooh  And NO GAS SYSTEM

 Please do not use this as good to use, it is a simulation based on my brass capacity, database bullet numbers and user compiled powder model. I took MY model, changed the barrel length, bullet and powder.

That said, the database powder model is very well represented, which means many many user submissions have been compiled together to get a very accurate powder model. Since the visual color indicator is only one step away from being 100% "green" I'd say it's a very popular powder.

Obviously, start low and work up bla bla bla... but this might help give you an idea of place to get going.

Thank you. That should really help.
At least i have a Mv Cieling now.

Many Thanks

i will post up Results once i can get time to do a load and a range visit.