07-03-2021, 05:45 PM
Short story from my perspective, Lemonaid hit on after a fashion & I was quite skeptical about amounts to jamming the lands
When fire forming I started a less than desirable habit for general reloading of jamming the lands. I was skeptical that this may be an issue especially with factory loads for the Gas gun running near 2 grains lower than peak loads for the bolt gun.
I have put over 400 rounds of factory and fire forming loads through this rifle already. All .243 bullets have been have been HBN coated. So yes I pulled the factory bullete and HBN coated the bullets & reseated at a longer OAL in to the lands.
Recently I fired a few original length un coated factory rounds & primer cratering concern cleared up. I did look ofer the firing pin protrusion & fit & size & all looks pretty good to my machinist eyes. I did reach out to a gunsmith & he had recommended bushing & using a slightly smaller firing pin.
This morning I finished up fire forming brass for the 2nd time around to really sharpen the shoulders & get rid of the worst of the pulled 100 gr SP bullets from American reloading. These bullets I had sorted out as the worst in terms of blemishes, primary heavily flattened points. The pulled bullets shot surprisingly well out to 300 yards. Hitting an 8" steel plate out to 300 yards was occurring with good regularity considering what I am working with.
Word of warning regarding feed from the magazine. The spire point bullets just would not feed at all from the magazine. On the other hand the factory 105's & especially the 108's fed quite well from the mag.
Barrel is cleaning up very well with wipeout. Carbon is the only build up I struggle with at all & that is not bad by any means.
When fire forming I started a less than desirable habit for general reloading of jamming the lands. I was skeptical that this may be an issue especially with factory loads for the Gas gun running near 2 grains lower than peak loads for the bolt gun.
I have put over 400 rounds of factory and fire forming loads through this rifle already. All .243 bullets have been have been HBN coated. So yes I pulled the factory bullete and HBN coated the bullets & reseated at a longer OAL in to the lands.
Recently I fired a few original length un coated factory rounds & primer cratering concern cleared up. I did look ofer the firing pin protrusion & fit & size & all looks pretty good to my machinist eyes. I did reach out to a gunsmith & he had recommended bushing & using a slightly smaller firing pin.
This morning I finished up fire forming brass for the 2nd time around to really sharpen the shoulders & get rid of the worst of the pulled 100 gr SP bullets from American reloading. These bullets I had sorted out as the worst in terms of blemishes, primary heavily flattened points. The pulled bullets shot surprisingly well out to 300 yards. Hitting an 8" steel plate out to 300 yards was occurring with good regularity considering what I am working with.
Word of warning regarding feed from the magazine. The spire point bullets just would not feed at all from the magazine. On the other hand the factory 105's & especially the 108's fed quite well from the mag.
Barrel is cleaning up very well with wipeout. Carbon is the only build up I struggle with at all & that is not bad by any means.