Thread: 7mm RM rechambering

Still brand new, only had 10 rounds through. Just about to work up a load with 162gr eld-x’s and RL22, see how that goes for speed/accuracy. If it doesn’t like the elds, I’ll try nosler 168gr LR’s. It’s just a standard 1/9.5” barrel so definitely not fast twist.

Originally Posted by Grimus

Still brand new, only had 10 rounds through. Just about to work up a load with 162gr eld-x’s and RL22, see how that goes for speed/accuracy. If it doesn’t like the elds, I’ll try nosler 168gr LR’s. It’s just a standard 1/9.5” barrel so definitely not fast twist.

If i were you and wanting to extend the range/hitting power of what you have. Id forget about mag feeding it, and look at running the 180gr eldm seated out as long as your chamber will allow. Im running them in a 22" barrelled 284 win at just shy of 2800, the 7RM will push them lots faster with the right powder and will give you alot more energy down range and im picking a windage advantage over the 162/168 at higher velocity.

Im shooting the 180s out of a old factory tikka M595 9.5 or 9.25 twist or whatever they are and it shoots them extremerly well. So your standard barrel will likely shoot them well.

If you want to rechamber it, id look at the 7mm Blaser Mag cartridge, i believe it can be done on a T3 no problem. and will give a handy powder increase over the 7RM and no belted case if thats important to you.

Originally Posted by Grimus

Still brand new, only had 10 rounds through. Just about to work up a load with 162gr eld-x’s and RL22, see how that goes for speed/accuracy. If it doesn’t like the elds, I’ll try nosler 168gr LR’s. It’s just a standard 1/9.5” barrel so definitely not fast twist.

you can achieve more with your RM but need to go to slower burn rate powders like RL25 or 26, or AR2225, and like @GWH says bigger , higher BC pills like the 180 VLD's or ELDM's even if that means single feeding.
I believe the Duley's have even gone to RL33 in 7mmRM's with some success.