Thread: Loading for a 22 Creedmoor

Originally Posted by SmokeyJason

4350 was a good bet in the 300wsm and so was rl 17, no mention of that?

Yes, RL17 would work well as very similar to RL16. RL16 is temp stable being an improvement over RL17.

Originally Posted by 6.5 CRD

Modelling it in GRT suggests that 2209/h4350 is actually the pick of the bunch when it comes to ADI powders, theres just not enough room in the creedmoor case to get enough 2217 or 2225 in there. If you could somehow shoehorn enough 2217 in the case & run it pretty compressed it would give slightly better velocity but would work best with a very long barrel. 2213sc looks like a good option as far as good velocity & max load would be ever so slightly compressed. 2209/h4350 does look to offer better velocity by around 30-40fps over 2213sc, a max charge its around 90% case fill. However something which may be of interest, a max charge of 2209/h4350 will offer a complete burn in as short as a 19 inch barrel, 2213sc & 2217 would both require a 30 inch barrel to do the same, So you would be burning a bit of powder post muzzle, if your running a supressor it could be pretty hard on it.

RL26 comes in as the clear winner by a country mile, Around 150fps gain over 2209/h4350, complete burn in as short as a 18 inch barrel & good case fill.

Yes, that modelling is correct to my field results with 22 CR and why RL26 is called "magic fairy dust". It would be the same trying to replicate RL26 performance in another overbore cartridges like 6.5 x284/6.5PRC with likes of 2217/H1000. You'll get accurate loads for sure but only way to get speeds up is jam more powder in compressed and/or seat bullets out further if your action allows it.

Super performance and a few of others like RL23 would go ok as well.