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Re: 260 Rem or AI Bobcape #5006444 03/04/11
Joined: Oct 2000 Posts: 7,893 finally home in Alaska!!! Paul Walukewicz Campfire Outfitter
Paul Walukewicz Campfire Outfitter Joined: Oct 2000 Posts: 7,893 finally home in Alaska!!!	Best to start off slow! that way you don't wear yourself out! grin interesting info! thanks for posting it up! Paul I can't spell... Deal with it...

GB1

Re: 260 Rem or AI Paul Walukewicz #5010213 03/05/11
Joined: Aug 2002 Posts: 7,445 NY FVA Campfire Tracker
FVA Campfire Tracker Joined: Aug 2002 Posts: 7,445 NY	Dang that 260AI is sexy and I've a Rock .264 barrel on the way. That AI body is like a Siren's call though I know it may cause feeding issues. Perhaps a center feed DBM of some make. Hmmmm.

Re: 260 Rem or AI FVA #5010384 03/05/11
Joined: Aug 2002 Posts: 14,471 Northern Arizona S SU35 Campfire Outfitter
SU35 Campfire Outfitter S Joined: Aug 2002 Posts: 14,471 Northern Arizona	Go for it.

Re: 260 Rem or AI SU35 #5010498 03/05/11
Joined: Apr 2009 Posts: 1,275 Black Hills, SD B Bobcape Campfire Regular
Bobcape Campfire Regular B Joined: Apr 2009 Posts: 1,275 Black Hills, SD	Feeding from a Rem 700 SA is not bad. I use the SAUM follower. It allows 4 down and feeds pretty well. I polish the follower, feed ramp and bottom of the rails really well. You can feel it coming out of the magazine for sure, but no problem. Bob I met a French guy the other day. I asked him "Do you speak German?" He said "No." I said "You're welcome!"

Re: 260 Rem or AI Bobcape #5010594 03/05/11
Joined: Mar 2004 Posts: 1,792 Oregon J joecool544 Campfire Regular
joecool544 Campfire Regular J Joined: Mar 2004 Posts: 1,792 Oregon	Originally Posted by Bobcape Here are pictures of the before and after cases. This .260 case before fire forming weighs 160.9 grs empty. This fire formed .260 AI case weighs 160.5 grs empty. Ok I have to ask where did the .4 grs go? just blow out the end of the barrel? You do realize it's the same piece of brass right? just different dimensions but the same amount of brass. You might want to check your scales. Unless it was not the same case and your cases are varying that much in weight. Last edited by joecool544; 03/05/11.

IC B2

Re: 260 Rem or AI joecool544 #5010847 03/05/11
Joined: Apr 2009 Posts: 1,275 Black Hills, SD B Bobcape Campfire Regular
Bobcape Campfire Regular B Joined: Apr 2009 Posts: 1,275 Black Hills, SD	Quote Ok I have to ask where did the .4 grs go? just blow out the end of the barrel? You do realize it's the same piece of brass right? just different dimensions but the same amount of brass. You might want to check your scales. Unless it was not the same case and your cases are varying that much in weight. Actually it's not the same piece of brass. I weighed a standard .260 and a formed .260AI empty and then filled with water. The two pieces of brass weighed .4 grs different. Sorry for the confusion. Bob I met a French guy the other day. I asked him "Do you speak German?" He said "No." I said "You're welcome!"

Re: 260 Rem or AI Bobcape #5010892 03/05/11
Joined: Aug 2002 Posts: 7,445 NY FVA Campfire Tracker
FVA Campfire Tracker Joined: Aug 2002 Posts: 7,445 NY	If you wanted to get real anal the AI'd case is likely a hair shorter than the parent case. The capacity of that length difference is just bullet at like OAL, LOL.

Re: 260 Rem or AI SU35 #5010897 03/05/11
Joined: Aug 2002 Posts: 7,445 NY FVA Campfire Tracker
FVA Campfire Tracker Joined: Aug 2002 Posts: 7,445 NY	Originally Posted by SU35 Go for it. I'll flip flop a bunch before I get all the components in the smith's hands and commit,LOL.

Re: 260 Rem or AI FVA #5011072 03/05/11
Joined: May 2008 Posts: 529 Valley of the Sun tacgnut Campfire Regular
tacgnut Campfire Regular Joined: May 2008 Posts: 529 Valley of the Sun	I've owned two rifles in this chambering, my experience has been mixed with highs and lows. Accuracy seemed ok, but not exceptional. Fire forming brass is pretty straight forward and case life was very good. The last rifle has fouling problems, after a few rounds, the groups grow exponentially and is not reliably accurate. Therefore, this rifle is awaiting a new barrel and will be chambered in 6.5X47 Lapua. The 260 rem bests the velocity of this chambering by 100 or so fps but the Lapua is far more accurate and close to the same velocity with smaller case capacity.

Re: 260 Rem or AI tacgnut #5011104 03/05/11
Joined: Aug 2002 Posts: 14,471 Northern Arizona S SU35 Campfire Outfitter
SU35 Campfire Outfitter S Joined: Aug 2002 Posts: 14,471 Northern Arizona	Quote Lapua is far more accurate and close to the same velocity with smaller case capacity. At higher pressures. Why don't you try out some the new Lapua 260 Rem brass.

IC B3

Re: 260 Rem or AI SU35 #5011877 03/05/11
Joined: Dec 2002 Posts: 13,106 Kodiak & AZ D dennisinaz Campfire Outfitter
dennisinaz Campfire Outfitter D Joined: Dec 2002 Posts: 13,106 Kodiak & AZ	I can't wait for that stuff to get out! I am going to ream my 260 to 260AI, main reason is that I don't have a 260 die and I do have a 260AI die. The neck on my 260 is .294 and I hate it. The neck on my AI is .297 or 298 which will work with available brass better. I am waiting for the new Lapua stuff to come out before I do it to see if it works 'as is' before I tear this sucker down! NRA Benefactor Member Those who live by the sword get shot by those who don't.

Re: 260 Rem or AI dennisinaz #5011943 03/05/11
Joined: Aug 2002 Posts: 7,445 NY FVA Campfire Tracker
FVA Campfire Tracker Joined: Aug 2002 Posts: 7,445 NY	Any idea in how long before Lapua 260 brass is out?

Re: 260 Rem or AI FVA #5013420 03/06/11
Joined: Aug 2002 Posts: 7,445 NY FVA Campfire Tracker
FVA Campfire Tracker Joined: Aug 2002 Posts: 7,445 NY	Graph's says April. I put in a order.

Re: 260 Rem or AI 260Shooter #5020300 03/08/11
Joined: Aug 2002 Posts: 7,445 NY FVA Campfire Tracker
FVA Campfire Tracker Joined: Aug 2002 Posts: 7,445 NY	Originally Posted by 260Shooter I thought long and hard about an AI. The fireforming and only about 100fps gain wasn't worth it to me. Terry Cross shot an AI but since switched back to straight 260. I spoke with Terry Cross a bit yesterday and brought up the 260/260AI. I want to be careful not to butcher what he articulated so take what I write with a grain of salt. The gist I got is that he like to run his 139/140 grain bullets near 2900 fps(26" barrel). With better brass being available, Norma and now Lapua, He can run higher pressures and still keep tight primer pockets with the 260 and reach those velocities. Also a rifle that feeds well may not do so in under the rigors of the field and competition and the standard 260 has a marked advantage there. FWIW.

Re: 260 Rem or AI Bobcape #5021369 03/08/11
Joined: Jan 2003 Posts: 1,477 B.C., Canada John_G Campfire Regular
John_G Campfire Regular Joined: Jan 2003 Posts: 1,477 B.C., Canada	Originally Posted by Bobcape Originally Posted by John_G I've done some research to answer my own question: the 260AI shows a 5% gain in capacity. Given that, one could expect a 1% - 2% gain in velocity (25 - 50 fps), given similar chamber pressures. If you're doing better than that you're shoving more stuffing in the turkey, which can be done with either chambering. Ackley himself wasn't too strong on the 6.5-08AI. But if it turns your crank, go ahead. I can give some actual data on the capacity differences. I built my very first one in 1979 while in gunsmith school and quite a few since then. I corresponded with Ackley by mail about the first one. He even sent me some load data from the Prowley Ballistic Calculator. They were way too hot! Here are pictures of the before and after cases. This .260 case before fire forming weighs 160.9 grs empty. This fire formed .260 AI case weighs 160.5 grs empty. The plain .260 weighs 212.3 grs full of water. The .260 AI weighs 217.3 grs full of water. The water weights for these cases are � 212.3 � 160.9 = 51.4 grs for the standard .260 217.3 � 160.5 = 56.8 grs for the .260 AI This gives of 5.4 grs or 10.5% increased capacity. (5.4 divided by 51.4 = 10.5%) Sorry for the bad pictures. For what it's worth, the .260 AI performs great and case life is terrific, i.e. - 10 + loadings. Bob PS - My first post. Which translates to about 60 fps, given equal pressures.

Re: 260 Rem or AI John_G #5021408 03/08/11
Joined: Aug 2002 Posts: 7,445 NY FVA Campfire Tracker
FVA Campfire Tracker Joined: Aug 2002 Posts: 7,445 NY	Fun Sucker!

Re: 260 Rem or AI John_G #5021434 03/08/11
Joined: Aug 2002 Posts: 14,471 Northern Arizona S SU35 Campfire Outfitter
SU35 Campfire Outfitter S Joined: Aug 2002 Posts: 14,471 Northern Arizona	Quote Which translates to about 60 fps, given equal pressures. True, and if I was running an 260 AI the first powder I would try would be RL25 to take advantage of that little more capacity. I would bet 2,900 with a 140 at equal pressure.

Re: 260 Rem or AI SU35 #5023910 03/08/11
Joined: Apr 2004 Posts: 42,819 Likes: 4 Southern Oregon USA S Seafire Campfire 'Bwana
Seafire Campfire 'Bwana S Joined: Apr 2004 Posts: 42,819 Likes: 4 Southern Oregon USA	Here's the results of a 100 grain ballistic tip that left the Muzzle at 3350 fps... and met a 175lb blacktail at 125 yds... this was out of a plain old factory Ruger 77 Mk2. in 260 Rem... "Minus the killings, Washington has one of the lowest crime rates in the Country" Marion Barry, Mayor of Wash DC “Owning guns is not a right. If it were a right, it would be in the Constitution.” ~Alexandria Ocasio Cortez

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