Stats Shooter
New member
So I built my savage 110 .300 wm into a target rifle. It is in a Chassis stock and takes magazines.
I put a Shilen #8 28" barrel on it. I headspaced it using the barrel nut and Foster's gauges. It will close easy on the go gauge and about half way on the no go.... I'm pretty sure that's about perfect. I torqued the barrel nut to 70 ft lbs.
Now, the new chamber will barely accept my older brass from my previous rifle. I FL size it using RCBS dies and she'll holder, sizing it down until it touches the shell holder. I do not cam-over.
The new chamber easily accepts new factory ammo, I bought a box of "cheap" Winchester 150 gr ammo and fired all 20. No problems at all. The fired shells will easily rechamber that were fired in the new chamber. My chamber gauge says that they all grow to 2.2715 exactly from, (with respect to the win factory ammo average) 2.2560.... Which means the shoulder grew out .0155.
After 20 firings, the old sized brass will chamber, but I have to tap the bolt with a rubber mallet to get it back out. I noticed some scratches on the old, hard to extract, brass after extraction, but the shoulder diameter is ten thousandths smaller than the new fireformed brass. I have measured from case head to datum but I'm afraid measurement error is too high for me to extract meaningful information.
It isn't a huge deal, I'm going to need brass anyway, but I was going to use the old brass to do jump/jam development so that I didn't have to work the new stuff.
I put a Shilen #8 28" barrel on it. I headspaced it using the barrel nut and Foster's gauges. It will close easy on the go gauge and about half way on the no go.... I'm pretty sure that's about perfect. I torqued the barrel nut to 70 ft lbs.
Now, the new chamber will barely accept my older brass from my previous rifle. I FL size it using RCBS dies and she'll holder, sizing it down until it touches the shell holder. I do not cam-over.
The new chamber easily accepts new factory ammo, I bought a box of "cheap" Winchester 150 gr ammo and fired all 20. No problems at all. The fired shells will easily rechamber that were fired in the new chamber. My chamber gauge says that they all grow to 2.2715 exactly from, (with respect to the win factory ammo average) 2.2560.... Which means the shoulder grew out .0155.
After 20 firings, the old sized brass will chamber, but I have to tap the bolt with a rubber mallet to get it back out. I noticed some scratches on the old, hard to extract, brass after extraction, but the shoulder diameter is ten thousandths smaller than the new fireformed brass. I have measured from case head to datum but I'm afraid measurement error is too high for me to extract meaningful information.
It isn't a huge deal, I'm going to need brass anyway, but I was going to use the old brass to do jump/jam development so that I didn't have to work the new stuff.
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