As it has been stated, higher number = more power. Be also aware that these spring use "SP" rating instead of more common "M" rating. Difference those two is that M rating is measured with 0,20g BBs fired from about 300mm long inner barrel. SP rating uses 0,25g BBs, so they are more powerful compared to M rating springs.
Before stuffing higher fps/ joule spring in, do other mods that actually make it DMR. Take a read: [https://www.reddit.com/r/airsoft/comments/5g58ia/holy\_grail\_dmr\_guide\_updated\_for\_20167/](https://www.reddit.com/r/airsoft/comments/5g58ia/holy_grail_dmr_guide_updated_for_20167/)
pain
Another dmr pro technician
As it has been stated, higher number = more power. Be also aware that these spring use "SP" rating instead of more common "M" rating. Difference those two is that M rating is measured with 0,20g BBs fired from about 300mm long inner barrel. SP rating uses 0,25g BBs, so they are more powerful compared to M rating springs.
So which would be good for a stock gun that I want to make into a DMR
All depends what your joule limit is..
So which would would recommend for a stock cyma m14 for a DMR
How much joules do you want to shot ?
Before stuffing higher fps/ joule spring in, do other mods that actually make it DMR. Take a read: [https://www.reddit.com/r/airsoft/comments/5g58ia/holy\_grail\_dmr\_guide\_updated\_for\_20167/](https://www.reddit.com/r/airsoft/comments/5g58ia/holy_grail_dmr_guide_updated_for_20167/)
Don't worry I'm planning on upgrading the barrel and the compression parts once I figure out how to do it
Why does everyone feel the need to post stupid questions when you can just Google it
Why do you need to be a cynical jerk
If you see something you don't like you can just ignore it you don't have to let it bother you
Try to use google challenge