Can anybody please share what the typical jump is with factory Hornady 6.5 CM 140gr ELD-M in a SAMMI spec chamber (0.199" freebore)?
0.030?
0.032?
0.050?
Something else?
0.030?
0.032?
0.050?
Something else?
This past weekend I shot some Hornady factory loaded 143ELD-X and those loaded rounds have a .060" jump. Shoot great in my barrel (.199 FB). That bullet is very similar to the 140 ELD-M
Hornady ELD/AMAX love to jump. Nothing is too much for them for good accuracy. For me in rifles I shoot them in .050-.080 is ideal. The ELDX is similar.Can anybody please share what the typical jump is with factory Hornady 6.5 CM 140gr ELD-M in a SAMMI spec chamber (0.199" freebore)?
0.030?
0.032?
0.050?
Something else?
Hornady ELD/AMAX love to jump. Nothing is too much for them for good accuracy. For me in rifles I shoot them in .050-.080 is ideal. The ELDX is similar.
Probably shouldn't have replied and waste your time. I don't shoot factory ammo. Someone will weigh in on that exact spec but sorry it's not me. I guess I thought you were wondering if too much or not enough jump would hurt accuracy with ELDs.So what is the typical jump using factory-loaded 140 ELDM in a SAAMI chamber? That's what I'm trying to figure out. It's not about how I should seat hand loads.
At 600 rounds, my rifle had a 0.032" jump using factory 140 ELDM ammo. I'm just trying to work backward and deduce what my chamber spec might have been. Because I suspect it wasn't SAAMI. My guess is when new, it had a .030" jump with factory ammo, which might equate to a .169" freebore instead of .199" (SAAMI). But I need to know what other people are seeing on a verified SAAMI chamber using the same ammo.
Probably shouldn't have replied and waste your time. I don't shoot factory ammo. Someone will weigh in on that exact spec but sorry it's not me. I guess I thought you were wondering if too much or not enough jump would hurt accuracy with ELDs.
I think the question was asked of how many shots because you'll have some throat erosion where the freebore or throat will increase. Not much at 160 rounds but it's measurable.Yeah, I'm really trying to figure out freebore. Just using jump and factory ammo to work backward because I don't know what kind of reamer was used on my barrel.
That was me. I asked.I think the question was asked of how many shots because you'll have some throat erosion where the freebore or throat will increase. Not much at 160 rounds but it's measurable.
Hornady ELDs and Amax bullet love that long jump. I jump the 162 Amax .150 in my .284 with excellent accuracyHmmm, just got off the phone with Hornady Tech Support. They said with SAAMI 0.199" free bore, I should expect 0.098" jump. Seems rather far. Almost 1/10 inch.
I'm at .005 off in a Ruger American 75 gr. ELDM's.
Hand loads. they're longer than SAMMI/Mag length. This is in 223 2.385 COAL and 1.835 CBTO length