My third line pack is a Camelbak BFM (old style) and I'm finding it is too small for a 2 week deployment. Is there any way to add 1000 - 1500 cu in to it, or am I better off starting from scratch? Of note, I'm using a RAID as my 3 day in conjunction with the BFM.
My suggestion would be to add a MOLLE II waist pack to the bottom of the BFM or the RAID. I don't know exactly what the CU inch volume is I would guess around 300 - 350? That might be a place to start. If you wanted to reduce weight, cut the waist belt off. All though not much weight take off as a whole, but the old adage ounces = pounds comes to mind.
Consider the 'sustainment' pouches in addition to the waist pack. Or the TT large vertical utility pouches that come with their rifleman's kit.
Or buy my awesome, lightly used USMC coyote FILBE pack in the swap meet. Bigger than the RAID, it rides nicely and has a serious amount of room - perfect for a 3rd line for 2 weeks. I also have a Mystery Ranch pack that will show up there soon for a good price, depending on a message out right now.
I have kifaru long and mid pockets I use for this. Two longs and one mid add about 1600 iirc.
Looks like the long pockets are no longer made, replaced by side pockets.
A Kifaru Pod in size small would add up to 2240 cubic inches with some attachment mods to the bottom of the pack. More space than you are asking for, but it will cinch down smaller.
How old is your CamelBak? Cuz if it is as old as mine, it's getting tired. Itsa good piece of gear but if the nylon is fading you may want to consider a new pack.
I replaced mine with an Eberlestock G2 Gunslinger. Maybe overkill for SAR, but I always end up taking mission gear with me. When I take my SAR helmet out I can carry a lot more stuff than if I carry it in my hands and the rifle pouch lets me carry long skinny stuff like a shovel or axe. The overnight pack is always in the bottom but the is a lot of room for mission gear. And itsa lot more comfortable.
The external frame also lets me carry other stuff that I otherwise can't carry. The ALICE with pack shelf is still a pretty good choice for portages in restricted terrain.
http://www. eberlestock .com/G2%20Gunslinger%20II.htm
And the CFP-90 that I had, it made for a great set of stuff sacks when I cut it up.
Rather than adding capacity to a style of pack like a BFM, I would start over with something from MR of Kifaru. You are doing your back a favour.
Or buy my awesome, lightly used USMC coyote FILBE pack in the swap meet.
Problem solved. Thanks for all the recommendations.