CBI 260 Rem Match & AI Mag Fed

[capreppy]

CLIFF NOTES: DO NOT RUN THE CBI 260 Rem Match if you plan to use AI Mags!!!


Finally got my rig put together and ran some loads @ AI mag length (2.85, 2.86 is mag length).

Loaded ladders for the 142 SMK and 140 Amax. I had not checked jump as I wanted to see how well they would shoot at AI mag length. They did not shoot well. Apparently the longer freebore of the CBI 260 Rem Match is NOT such a good idea if you plan to run AI Mags.

With the longer freebore, I am running a .05 jump on the 142 SMK and .065 jump on the 140 Amax. Both of these bullets prefer a .02 jump. I am going to play around with the charges some more to see if there is a charge that works well with the larger jump. I ran ladders from 41.9 thru 43.1 in .3 increments. I'm going to run a little higher to see if I can find an accuracy node that tolerates the larger jump.

[stangfish]

Man that stinks. What powder?

[capreppy]

H4350 and CCI BR primers.

Going to try another set of ladders at 2.85 COAL and some higher charges. Hoping I can find a decent accuracy node.

[Aircraftmech76]

You can always use the Alpha Type 2 mags which will allow you to seat out to 2.950" or so.

Kevin

[capreppy]

You can always use the Alpha Type 2 mags which will allow you to seat out to 2.950" or so.

Kevin

will these work with an XLR chassis?

[BoilerUP]

will these work with an XLR chassis?

They should...footprint is the same as an AICS mag.

You can always remove the front plate from your AICS mag to gain OAL; never done it but lots of folks on the interwebs have. Reportedly gets you close to 2.95".

[capreppy]

They should...footprint is the same as an AICS mag.

You can always remove the front plate from your AICS mag to gain OAL; never done it but lots of folks on the interwebs have. Reportedly gets you close to 2.95".
I'm going to shoot the ladders I worked up last night. If I can't find a good node, I'll see if I can't a) remove the front plate or b) get an Alpha type 2.